| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 092172000 |
PISTON
| 100 |
| 092169100 |
CYLINDER DETAIL
| 44 |
| 092120100 |
DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS
| 34 |
| 092165000 |
WITH GUIDE OR SEAL ON CYLINDER END PORTION FOR PISTON OR MEMBER MOVED BY PISTON
| 26 |
| 092061000 |
RELATIVELY MOVABLE WORKING MEMBERS
| 25 |
| 092153000 |
WITH LUBRICATING MEANS
| 21 |
| 092005000 |
WITH (1) SIGNAL OR INDICATOR OR (2) INSPECTION WINDOW IN EXPANSIBLE CHAMBER WALL PORTION
| 19 |
| 092089000 |
COLLAPSIBLE CHAMBER WALL PORTION (E.G., HINGED OR FLEXIBLE WALL)
| 18 |
| 092015000 |
WITH RELEASABLE STOP OR LATCH MEANS TO PREVENT MOVEMENT OF WORKING MEMBER
| 10 |
| 092163000 |
FLUID CONDUIT OR PORT IN FIXED WALL OF WORKING CHAMBER
| 9 |
| 092031000 |
RECTILINEARLY MOVING WORKING MEMBER AND COAXIAL OR PARALLEL ELEMENT SLIDABLY INTERENGAGED FOR RELATIVE ROTARY MOVEMENT
| 8 |
| 092140000 |
WITH LINKAGE OR TRANSMISSION HAVING RELATIVELY MOVABLE MEMBERS
| 7 |
| 092120000 |
OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR
| 6 |
| 092130000 |
WITH SEPARATE BIASING MEANS FOR WORKING MEMBER
| 6 |
| 092034000 |
BELLOWS TYPE EXPANSIBLE CHAMBER | 5 |
| 20090139397 | Method of Manufacturing Bellows - Method for producing at low cost bellows which show high durability even when used in a quite reactive atmosphere. A method for manufacturing bellows includes the steps of: I: forming an untreated bellows from a flat base plate, the base plate including 15 to 30 wt % of Cr, 5 to 40 wt % of Ni, 0.9 to 6 wt % of Al, less than 1 wt % of Mo, less than 0.1 wt % of Mn, less than 0.1 wt % of C, less than 0.1 wt % of S, less than 0.1 wt % of P and a balance of Fe and an unavoidable impurity (relative to 100 wt % of the base plate); and II: heating the untreated bellows at a temperature of 750 to 895° C. in an atmosphere which contains water and hydrogen and in which the volume ratio of hydrogen to water (H | 06-04-2009 |
| 20100071544 | Fabric Fluid-Powered Cylinder - A fluid-powered cylinder for displacing an object with respect to a support surface is disclosed. The fluid-power cylinder includes a fabric enclosure having ends fastened to two end caps and forming an expandable and contractible chamber therein. The chamber has a port for selectively disposing an incompressible fluid in the chamber. The chamber is adapted to displace the object to a first position with respect to the support surface and to displace the object to a second position with respect to the support surface. | 03-25-2010 |
| 20090301292 | Fluidic artificial muscle actuator and swaging process therefor - A fluidic artificial muscle actuator consisting of an inner elastic bladder surrounded by a braided filament sleeve and sealed off on either end with end fittings. Pressurization of the actuator produces force and/or motion through radial movement of the bladder and sleeve which forces the sleeve to move axially. Both contractile and extensile motions are possible depending on the geometry of the braided sleeve. The fluidic artificial muscle actuator is manufactured using a swaging process which plastically deforms swage tubes around the end fittings, braided sleeve, and pressure bladder, creating a strong mechanical clamping action that may be augmented with adhesive bonding of the components. The swaging system includes the swaging die and associated components which are used to plastically deform the swage tube during assembly of the actuator. | 12-10-2009 |
| 20120011998 | MEMBRANE PUMP HEAD FOR A HOMOGENIZER OR A HIGH-PRESSURE PUMP - The disclosure relates to a membrane pump head for a homogenizer or a high-pressure pump. The membrane pump head comprises at least one pump head enclosed in a pump housing. The membrane pump head also includes a product chamber with inlet and outlet for the product, as well as a hydraulic chamber in which a piston is disposed to operate. The product chamber and the hydraulic chamber are separated by a double membrane. The membrane is oriented at 15-75° in relation to the longitudinal direction of the piston. | 01-19-2012 |
| 20110197753 | CANTILEVER FEEDBACK MECHANISM FOR A PROPORTIONAL BELLOWS ASSEMBLY - A cantilever feedback mechanism includes an upper cantilever and a lower cantilever. The upper cantilever and lower cantilever have a resistance spring rate to facilitate movement of the bellows over a selected range of resistances. The upper cantilever has downwardly oriented upper cantilever stops. The lower cantilever has upwardly oriented lower cantilever stops that engage the upper cantilever stops. Mean are provided for applying a preload to maintain the lower cantilever stops and the upper cantilever stops engaged until a force urging movement exceeds the preload. | 08-18-2011 |
| 092008000 |
WITH MEANS TO CONTROL FLOW OF NON-WORKING ARRESTING FLUID FOR WORKING MEMBER | 5 |
| 20080236383 | POSITIONING CONTROL MECHANISM FOR SINGLE-ACTING AIR CYLINDER - An electromagnetic operation-type automatic pressure-adjusting valve outputting an air pressure corresponding to an amount of electric power is connected in an air flow path connecting a pressure chamber of a single-acting main cylinder and an air source. A controller is configured to obtain a relationship between a position of a piston and an air pressure from a relationship between the position of the piston of the main cylinder and a spring force of a return spring, and a relationship between the air pressure supplied to the pressure chamber and an acting force applied to the piston by the air pressure. When a target position of a movement of the piston is inputted to the controller, the controller is operated to move the piston toward the target position and to stop the piston at the position by means of controlling the amount of electric power for the automatic pressure-adjusting valve so that an air pressure corresponding to the target position is outputted. | 10-02-2008 |
| 20110296981 | SHOCK ABSORBER - A shock absorber has an upper cylinder, a piston valve mounted on a lower end of the upper cylinder, a free piston slidably mounted in the upper cylinder and dividing the upper cylinder into an air chamber and an upper oil chamber, a lower cylinder slidably mounted around the lower end of the upper cylinder and has a lower oil chamber. Since the free piston and the air chamber are disposed in the upper cylinder, the shock absorber has a compact structure. Furthermore, when the upper and lower cylinders slide relatively, the free piston slides accordingly to regulate volume of the upper oil chamber and to provide a damping effect. The hydraulic oil in the shock absorber does not contact air and therefore no air permeates into the hydraulic oil. | 12-08-2011 |
| 20090205485 | Pneumatic retarding device - The invention concerns a pneumatic retarding device with a cylinder dividing the cylinder into a displacement chamber and a compensation chamber and including a piston with a piston rod movably supported in the cylinder and having a piston seal element wherein, upon movement of the piston, a piston movement opposing force is generated while an air leakage flow is established past the piston for damping piston movement. The piston and the piston rod are formed integrally and the piston seal element has at least two deformation zones of which one responds faster to a pressure change in the displacement chamber then the other which is subjected to the pressure change via a restrictive passage. Also, a guide system is provided with such a retarding device. | 08-20-2009 |
| 20090056532 | PNEUMATIC BRAKE BOOSTER - A pneumatic brake booster with a booster housing is subdivided into at least one working chamber and at least one vacuum chamber by means of at least one axially movable wall capable of being acted upon with a pneumatic differential pressure. An actuable input member includes a valve piston, with an output member for acting upon a brake master cylinder with an output force. A control valve is arranged in a control housing and can be actuated by the valve piston for controlling the differential pressure. An elastic reaction element is arranged in a control housing recess and against which the output member bears. Means for setting a distance z between the valve piston and the reaction element are provided on the output member. | 03-05-2009 |
| 20090293714 | Continuously Blockable Locking Device - A continuously blockable locking device with a cylindrical housing forming a work chamber, a closed first end and a second end located opposite from the closed end, a piston rod which is guided out of the housing in a sealed manner through the second end so as to be arranged coaxial to the center longitudinal axis by means of a guiding and sealing device, a piston which is arranged at the end of the piston rod situated in the housing and which divides the work chamber into a first work space, through which the piston rod extends, and a second work space, and a housing which is connected to, or can be connected to, the housing and which forms a valve chamber, a first valve assembly and a second valve assembly being arranged therein. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium. | 12-03-2009 |
| 092146000 |
PLURAL UNITARILY MOUNTED CYLINDERS OR FRAME THEREFOR (161) | 4 |
| 20090007775 | Engine for Aeronautical Applications II - An improved engine for aeronautical applications includes a forged cylinder block having a drive device rotatably mounted therewithin and a motive device for rotating the drive device, the motive device including two cylinder banks in a V-type configuration and a plurality of cylinders mounted within the cylinder banks for producing power and rotating the drive device. The forged cylinder block further includes a plurality of cylinder cavities formed in the cylinder banks and the upper approximately one-third of each of the cylinder cavities is generally surrounded by a generally toroidal cooling chamber, and the lower approximately two-thirds of each of the cylinder cavities is generally free of any surrounding cooling chambers. Finally, a coolant circulation device in fluid transmission connection with each of the cooling chambers is operative to circulate cooling fluid therethrough whereby the upper approximately one-third of each of the cylinder cavities is cooled by the cooling fluid. | 01-08-2009 |
| 20110138996 | AXIAL PISTON MACHINE - An axial piston machine of an inclined axis design includes a housing in which a cylinder drum is disposed. The cylinder drum is rotatably supported on a central journal which is hingedly connected to a drive shaft. The central journal is inserted, in an axially displaceable manner, in a central journal bore formed in the cylinder drum which extends approximately coaxially to the longitudinal axis of the cylinder drum. A compression spring is disposed in central journal bore which bears against an end face facing away from the drive shaft, and loads the cylinder drum against a control disk. A radial groove is formed in central journal, in which an O-ring is accommodated, by way of which the central journal is held in a non-positive manner in the central journal bore when the axial piston machine is assembled and disassembled. | 06-16-2011 |
| 20090126562 | COMBINED PISTON-EXPANDER COMPRESSOR - The invention concerns a combined piston-expander compressor comprising a plurality of pistons ( | 05-21-2009 |
| 20110126700 | Undercarriage for a telescopic frame - A telescopic undercarriage for raising and lowering a frame. The undercarriage includes a base section having a pair of parallel base legs extending from a first end to a second end of the base section, the base section including a first plurality of braces extending between respective upper surfaces of the base legs and a second plurality of braces extending between respective lower surfaces of the base legs, the base legs, first plurality of braces and second plurality of braces collectively providing an elongate central base section passage. The undercarriage also includes an extendable section slidably disposed within the base section passage and having opposed legs, a drive system for extending and retracting the extendable section relative to the base section. | 06-02-2011 |
| 092161000 |
WITH SUPPORT OR FRAME (146) | 4 |
| 20100005957 | FLUID PRESSURE CYLINDER WITH TRUNNION SUPPORT FITTING - A pair of trunnion support fittings is installed on a cylinder tube, and the trunnion support fittings have main fittings placed along vertical outer surfaces of the cylinder tube and also have fastening fittings connected to arm sections of the main fittings by screws. Installation projections formed on the fastening fittings are engaged with engagement grooves formed in lateral outer surfaces of the cylinder tube. Also, particle layers are formed on the trunnion support fittings and are in contact with the vertical outer surfaces and lateral outer surfaces of the cylinder tube. | 01-14-2010 |
| 20110138997 | COUPLING ARRANGEMENT PROVIDING AN AXIAL SPACE BETWEEN A PLUNGER AND PLUNGER ADAPTOR OF A HIGH PRESSURE FLUID PUMP - A coupling for a pump connects a plunger to a plunger adaptor. The coupling provides a space between an end of the plunger and an end of the adaptor. Upon disconnecting the plunger from the adaptor, the space provides for removal of the plunger from and through a well of the pump. | 06-16-2011 |
| 20110132189 | Vibration/Shock Resistant Stud Housing - A brake stud housing assembly and method of construction of such assembly for vehicles that exhibits increased shock resistance and vibration reduction capability, allowing for increased durability of a brake housing assembly. The housing assembly includes a vibration dampening layer having an adhesive material that provides a permanent connection between the housing shell and reinforcing plate, which transfers both tensile and compressive loading forces between the housing shell and reinforcing plate in order to reduce vibration and stress. | 06-09-2011 |
| 20120024148 | LINEAR COMPRESSOR - There is provided a linear compressor, which can reduce parts production costs and simplify a part installation process by decreasing the number of main springs. The linear compressor comprises: a cylinder providing a space for compressing a refrigerant; a piston linearly reciprocating inside the cylinder to compress the refrigerant; an inner stator; an outer stator; a permanent magnet connected to the piston and linearly reciprocating between the inner stator and the outer stator; a supporter piston connected to the piston, at least part thereof being extended in a radial direction of the piston; a plurality of front main springs positioned on the same axis as the piston, one ends of which being supported by the supporter piston; and one rear main spring positioned on the opposite side of the piston, one end of which being supported by the supporter piston. | 02-02-2012 |
| 092144000 |
WITH ENCOMPASSING HEAT EXCHANGE MODIFYING SPACE OR JACKET | 3 |
| 20110030552 | COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE - A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. | 02-10-2011 |
| 20090071324 | WATER-COOLED PISTON COMPRESSOR - A water-cooled piston compressor having at least one air-compressing piston, which can be driven with means for producing a linearly oscillating drive force and which is accommodated in an axially movable manner in a cylinder housing which is closed at the end face via a cylinder head and is provided with water-cooling means, wherein the water-cooling means comprise a cylinder housing which is formed with a double wall and on whose end face facing the cylinder head a plurality of cooling openings are arranged, via which coolant flowing through the double-walled cylinder housing comes into contact with the region of the cylinder head. | 03-19-2009 |
| 20110247488 | HIGH-PRESSURE PUMP - A high-pressure pump includes a plunger for pressurizing a fuel, a cylinder accommodating the plunger reciprocatably in its axial direction and a pump body. The pump body defines a pressurization chamber, a low-pressure fuel passage hydraulically connecting a fuel inlet and the pressurization chamber, and a discharge passage. The pump body further defines a cylindrical space around the cylinder. The fuel flows into the cylindrical space from the low-pressure fuel passage so as to cool the cylinder. The entire outer surface of the cylinder can be surely cooled. | 10-13-2011 |
| 092082000 |
WITH MEANS TO CONTROL FLUID FLOW FROM NON-WORKING CHAMBER | 3 |
| 20090178553 | COMPRESSOR - The compressor of the present invention has a structure in which a groove is disposed on a sealing surface of at least one of the head and the valve plate. The structure enhances contact pressure on a pressed surface, providing the gasket with preferable sealing strength. Besides, the head of the compressor has no protrusion on the edge. This eliminates worry about breakage of the head, providing high reliability and productivity. | 07-16-2009 |
| 20090133574 | Ballistically Tolerant Linear Hydraulic Actuator - A hydraulic actuator has an armored section having concentric cylinders and an unarmored section having a cylinder with a frangible piston and a frangible upper gland nut. The hydraulic actuator may have leakage vents adapted to prevent leakage between hydraulic systems used to power the cylinders. The hydraulic actuator also may have a gland seal for sealing an end of the cylinder of the unarmored section and a sensing port adapted for allowing detection of fluid leaking due to damage of the gland seal. | 05-28-2009 |
| 20110232477 | ENGINE COMPONENT INCLUDING BREATHER APPARATUS, AND ENGINE BODY INCORPORATING SAME - An engine body includes a crankcase with a crank chamber therein, a cylinder block attached to the crankcase, and a breather passage which selectively permits fluid communication between the crank chamber and an area outside of the crank chamber. The engine body includes a one-way valve between the crank chamber and the breather passage, which allows a one-way flow of gases from the crank chamber to the breather passage. The one-way valve is pressure-operated and is operatively attached to a side wall of the engine body proximate a cylinder sleeve. The one-way valve may be mounted in a mounting window in a side wall of the crankcase, and a timing chamber may function as the breather passage. In an illustrative embodiment, the one-way valve includes a base plate having a valve hole formed therein, and a flexible reed valve plate with one end affixed to the base plate. | 09-29-2011 |
| 092088000 |
SEALED OPENING IN LONGITUDINAL WALL OF CHAMBER FOR RECEIVING WORKING MEMBER PORTION | 3 |
| 20100083823 | ROD-LESS CYLINDER DEVICE AND SYSTEM AND METHOD FOR OPERATING THEREOF - The disclosure provides a rod-less cylinder, device adapted to longitudinally displace loads, said device comprising a shaft, a nut confined to move longitudinally within the shaft, a slider circumscribing said shaft and coupled to said nut, a drive adapted to displace said nut within said shaft, and a sensing means adapted to affect a signal sent via wireless means towards said drive. | 04-08-2010 |
| 20120031264 | SOLVENT DELIVERY PUMP - A plunger seal and a backup ring are provided at a portion of a pump chamber through which a plunger is inserted. A back face of the backup ring is supported on a wall face of a cleaning chamber. The backup ring is a combined backup ring including two resin layers, i.e., a deformable resin layer and a non-deformable resin layer. A face of the backup ring in contact with the plunger seal is made up of a face of the deformable resin layer and an inner peripheral face is made up of a face of the non-deformable resin layer. The deformable resin layer is a resin layer having a higher elastic modulus than the plunger seal and having such an elastic modulus as to be able to absorb deformation of the plunger seal. The non-deformable resin layer is a resin layer having a higher elastic modulus than resin of the deformable resin layer. | 02-09-2012 |
| 20100031813 | RODLESS CYLINDER DEVICE - A rodless cylinder device includes a piston body integrated with the central top portion of a rolling diaphragm, a cylinder body which fixes the circumferential annular fixing portion of the rolling diaphragm and in which the piston body is fitted to be freely movable, a slit which is formed in the cylinder body to extend therethrough and elongated in an axial direction, an inner-to-outer connector fixed to the piston body and projecting outwardly through the slit, an external moving body positioned outside the cylinder body and fixed to the inner-to-outer connector, and a supply and exhaust mechanism, formed between the rolling diaphragm, the cylinder body and the piston body, the supply and exhaust mechanism supplying and exhausting a pressure fluid to and from a pressure chamber. | 02-11-2010 |
| 092145000 |
COMBINED | 3 |
| 20110271831 | WATER DEFLECTOR FOR A MUD PUMP - A deflector preventing contamination of an oil sump by water is provided, comprising a collar frictionally locking about a cylinder liner end of the mud pump, a manifold having a tube directing water against a piston and connecting rod contained within the cylinder liner, and a shield extending across an upper portion of the cylinder liner end. The deflector may be attached to cylinder liners with or without modification. A method is provided for deflecting water being forcibly expelled from a horizontal cylinder by a piston stroke, comprising steps of positioning a shield across an upper portion of the cylinder liner end, arranging a tube to spray water against the piston, forcibly spraying water against the piston, allowing the water expelled from the cylinder liner to flow into a water reservoir under the influence of gravity, and deflecting the water into the water reservoir as it is forcibly expelled. | 11-10-2011 |
| 20090178554 | Piston-Cylinder Unit - A piston-cylinder unit for pivoting a flap with respect to a motor vehicle body includes a cylinder having an open end with a seal, a closed end, and an interior space between the ends; a piston unit axially movable in the cylinder, the piston unit dividing the interior space into a first working space and a second working space; a piston rod connected to the piston unit and extending through the first working space and the seal; and flow connections connecting the first working space to the second working space. A switch element arranged outside the cylinder is switched in response to movement of the piston with respect to the cylinder. | 07-16-2009 |
| 20120031265 | INFLATABLE PAD HAVING REINFORCING BELTS - An inflatable pad includes: an inflatable pad body having a looped surrounding layer interconnecting top and bottom layers to cooperatively define an inflatable space; and a reinforcing belt unit disposed in the inflatable space in the inflatable pad body and connected between the top and bottom layers of the inflatable pad body. The reinforcing belt unit includes two coupling belts and a main reinforcing belt. Each coupling belt is attached fixedly and partially to a corresponding one of the top and bottom layers of the inflatable pad body, and has a central portion that is spaced apart from the corresponding one of the top and bottom layers of the inflatable pad body and that is connected to a corresponding one of opposite looped end portions of the main reinforcing belt. | 02-09-2012 |
| 092085000 |
WITH CUSHIONING MEANS EFFECTIVE OVER A PORTION ONLY OF STROKE | 3 |
| 20100212491 | FLUID PRESSURE CYLINDER - A fluid pressure cylinder including a first damper and a second damper provided respectively on a head cover and a rod cover, which are disposed on both ends of the fluid pressure cylinder so as to face toward a piston. The first damper and the second damper are formed from an elastic material, and are made up from a main body portion against which the piston abuts, and a plurality of legs that project from the main body portion and which are gripped between the head cover and the rod cover and an inner wall surface of the cylinder tube. | 08-26-2010 |
| 20100300283 | Hydraulic Cylinder - A pressure-receiving face plate | 12-02-2010 |
| 20090101005 | FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE - There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed. | 04-23-2009 |
| 20100212491 | FLUID PRESSURE CYLINDER - A fluid pressure cylinder including a first damper and a second damper provided respectively on a head cover and a rod cover, which are disposed on both ends of the fluid pressure cylinder so as to face toward a piston. The first damper and the second damper are formed from an elastic material, and are made up from a main body portion against which the piston abuts, and a plurality of legs that project from the main body portion and which are gripped between the head cover and the rod cover and an inner wall surface of the cylinder tube. | 08-26-2010 |
| 20100300283 | Hydraulic Cylinder - A pressure-receiving face plate | 12-02-2010 |
| 20090101005 | FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE - There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed. | 04-23-2009 |
| 092143000 |
WITH MOVEMENT DAMPING MEANS (E.G., FLUID FLOW RESTRICTOR) | 3 |
| 20110265643 | PISTON AND CYLINDER ASSEMBLY - A piston and cylinder assembly includes a housing defining a bore. A piston is sized to reciprocate in the bore. A first sealing member provides a sealing engagement between the piston and a wall of the bore. A first bushing, of a first material, is around a first portion of the piston toward a first end of the piston. A second bushing, of a second material, is around a second portion of the piston toward a second end of the piston. The first and second bushings guide the piston within the bore. The first material is different than the second material. | 11-03-2011 |
| 20100186584 | IMPROVED MULTICYLINDER FREE PISTON MACHINE - A machine such as an external combustion engine in an electrical power and heat cogeneration unit comprises multiple cylinders, each driving an independent load or being independently driven, and a balance shaft comprising one or more off-centre balancing mass(es) to counteract rocking motion created by the piston motion and thereby assist in dynamically balancing the machine. | 07-29-2010 |
| 20080314238 | RECIPROCATING-PISTON PUMP FOR FEEDING A LIQUID - The invention relates to a reciprocating-piston pump having an electromagnetically driveable reciprocating piston, which is mounted with a restoring spring, for feeding a liquid, an impact damper composed of an elastomer for damping an impact of the reciprocating piston at the end of a feed phase, a core flange which is situated opposite the reciprocating piston, with a gap which is dependent on the position of the reciprocating piston being provided between the reciprocating piston and the core flange. | 12-25-2008 |
| 092129000 |
ABUTMENT CONNECTION BETWEEN WORKING MEMBER AND POWER TRANSMISSION ELEMENT | 3 |
| 20100101408 | ROTARY ACTUATOR - An actuator having one or more pistons. The piston has a rack formed in a skirt of the piston, with the rack recessed within the skirt of the piston in a groove formed between a top lip and a bottom lip. The gear, also called a pinion, engages the rack between the top lip and the bottom lip. As the rack traverses the gear, the shaft that extends through the gear is rotated. The top lip and bottom lip, and the recessed rack that is present within the skirt of the piston adds strength to the piston where the piston engages the gear. The top lip and the bottom lip assist in maintaining alignment of the rack with the gear so that the rack and gear properly mesh. | 04-29-2010 |
| 20100300281 | RETAINING SEGMENT - The invention relates to a retaining segment ( | 12-02-2010 |
| 20110023704 | PUMP, IN PARTICULAR HIGH-PRESSURE FUEL PUMP - The invention relates to a pump, having at least one pump element, which has a pump piston driven in a lifting motion at least indirectly by a drive shaft. The pump piston is guided in a cylinder bore of a housing part of the pump, and the housing part has a cylindrical section surrounding the cylinder bore. A cup-shaped tappet is disposed between the pump piston and the drive shaft and has a bottom facing the drive shaft. A jacket of the tappet is guided on the cylindrical section of the housing part in a displaceable manner. A spring is provided, by means of which the tappet is pressurized toward the drive shaft. The pump piston abuts the bottom of the tappet with the front thereof facing the drive shaft. A disk is mounted on the pump piston in the end region thereof facing the base of the tappet has a greater outside diameter than the pump piston. The pump piston has the disk is secured in the tappet in the direction of the longitudinal axis of the pump piston by means of a safety element engaging in the disk. | 02-03-2011 |
| 092006000 |
EFFECTIVE AREA OF WORKING MEMBER END FACE SELECTIVELY VARIABLE | 3 |
| 20090272262 | Piston-Chamber Combination - A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall, and comprising a piston means in said chamber to be sealingly movable relative to said chamber wall at least between a first and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas at the first and second longitudinal positions, and at least substantially continuously differing cross-sectional areas at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area at said second longitudinal position being smaller than the cross-sectional area at said first longitudinal position, said piston means can change dimensions thereby providing for different cross-sectional areas of the piston means adapting the same to said different cross-sectional areas of the chamber during the relative movements of the piston means between the first and second longitudinal positions through said intermediate longitudinal positions of the chamber, said combination engaging a rigid surface. Said combination is movable relative to said surface. | 11-05-2009 |
| 20100170391 | Combination of a chamber and a piston, a pump, a motor, a shock absorber and transducer incorporating the combination - A combination of a piston and a chamber, wherein the chamber defines an elongate chamber having a longitudinal axis, the chamber having, at a first longitudinal position thereof, a first cross-sectional area thereof and, at a second longitudinal position thereof, a second cross-sectional area, the second cross-sectional area being 95% or less of the first cross-sectional area, the change in cross-section of the chamber being at least substantially continuous between the first and second longitudinal positions, the piston being adapted to adapt itself to the cross-section of the chamber when moving from the first to the second longitudinal position of the chamber. The piston may comprise an umbrella-like support structure or a fibre enforced deformable container comprising a foam or a fluid. The combination may be used in a pump, a linear actuator, a motor, or a shock absorber. | 07-08-2010 |
| 20090120283 | COMBINATION OF A CHAMBER AND A PISTON, A PUMP, A MOTOR, A SHOCK ABSORBER AND A TRANSDUCER INCORPORATING THE COMBINATION - A piston-chamber combination has an elongate chamber with a piston movable therein between first and second positions. The chamber has cross-sections of different areas and different circumferential lengths at the two positions, and substantially continuously different cross-sectional areas and circumferential lengths at intermediate positions, area and circumferential length at the second position being smaller than that at the first. The piston is elastically deformable and has other features to adapt to the different cross-sectional areas and circumferential lengths of the chamber during movements of the piston. | 05-14-2009 |
| 20090272262 | Piston-Chamber Combination - A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall, and comprising a piston means in said chamber to be sealingly movable relative to said chamber wall at least between a first and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas at the first and second longitudinal positions, and at least substantially continuously differing cross-sectional areas at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area at said second longitudinal position being smaller than the cross-sectional area at said first longitudinal position, said piston means can change dimensions thereby providing for different cross-sectional areas of the piston means adapting the same to said different cross-sectional areas of the chamber during the relative movements of the piston means between the first and second longitudinal positions through said intermediate longitudinal positions of the chamber, said combination engaging a rigid surface. Said combination is movable relative to said surface. | 11-05-2009 |
| 20100170391 | Combination of a chamber and a piston, a pump, a motor, a shock absorber and transducer incorporating the combination - A combination of a piston and a chamber, wherein the chamber defines an elongate chamber having a longitudinal axis, the chamber having, at a first longitudinal position thereof, a first cross-sectional area thereof and, at a second longitudinal position thereof, a second cross-sectional area, the second cross-sectional area being 95% or less of the first cross-sectional area, the change in cross-section of the chamber being at least substantially continuous between the first and second longitudinal positions, the piston being adapted to adapt itself to the cross-section of the chamber when moving from the first to the second longitudinal position of the chamber. The piston may comprise an umbrella-like support structure or a fibre enforced deformable container comprising a foam or a fluid. The combination may be used in a pump, a linear actuator, a motor, or a shock absorber. | 07-08-2010 |
| 20090120283 | COMBINATION OF A CHAMBER AND A PISTON, A PUMP, A MOTOR, A SHOCK ABSORBER AND A TRANSDUCER INCORPORATING THE COMBINATION - A piston-chamber combination has an elongate chamber with a piston movable therein between first and second positions. The chamber has cross-sections of different areas and different circumferential lengths at the two positions, and substantially continuously different cross-sectional areas and circumferential lengths at intermediate positions, area and circumferential length at the second position being smaller than that at the first. The piston is elastically deformable and has other features to adapt to the different cross-sectional areas and circumferential lengths of the chamber during movements of the piston. | 05-14-2009 |
| 092126000 |
WITH DIFFERENTIAL RADIAL THRUST PRODUCING MEANS FOR WORKING MEMBER | 2 |
| 20090301293 | Compressor - Known compressors are equipped with gas bearings, in which the bearing nozzles are continuously supplied with a stream of gas. According to the invention, the gas bearing is a self-sufficient bearing, in which the supply pressure is independent of the delivery pressure. To achieve this, the compressor is equipped with a gas reservoir with a bearing supply pressure. | 12-10-2009 |
| 20100083824 | Lobe Design For Fuel Pump Actuation - A fuel system may include a fuel pump and a drive shaft. The fuel pump may include a reciprocating member and the drive shaft may include a lobe member engaged with the reciprocating member. The lobe member may linearly displace the reciprocating member and drive the fuel pump. The lobe member may include a first lobe having a first opening flank driving a first compression stroke of the fuel pump through engagement with the reciprocating member. The first lobe may have a profile providing a constant velocity for the linear displacement of the reciprocating member for a portion of the first compression stroke. | 04-08-2010 |
| 092138000 |
WITH LINKAGE OR TRANSMISSION ENGAGING PORTION INTERMEDIATE SPACED WORKING MEMBER END FACES | 2 |
| 20080289489 | Composite Piston Unit and Automatic Vehicle Transmission - A composite piston unit ( | 11-27-2008 |
| 20110138995 | COMPRESSION SYSTEM HAVING SEAL WITH MAGNETIC COUPLING OF PISTONS - A system, in certain embodiments, includes a barrier with magnetic coupling between opposite sides of the barrier. For example, the system may include a first member with a first magnet that translates along with the first member, and a second member having a second magnet that translates along with the second member. The system also may include the barrier completely isolating the first member from the second member, wherein the first magnet magnetically couples with the second magnet through the barrier to impart translational motion from the first member to the second member. | 06-16-2011 |
| 092078000 |
WITH FLUID PURIFYING MEANS | 2 |
| 20090173222 | Fluid System - The invention relates to a fluid system for a pump circuit ( | 07-09-2009 |
| 20100018386 | COMPRESSOR - The compressor is provided with an oil separator for separating oil from refrigerant gas introduced into a separation chamber, an annular space for reserving oil separated from the refrigerant gas, and a reservoir chamber for reserving the thus separated oil. The oil separator is provided in a cylindrical hole formed in a discharge chamber from which the refrigerant gas is discharged and a lid for partitioning the cylindrical hole from the discharge chamber is provided in the cylindrical hole. The oil separator introduces the refrigerant gas from the discharge chamber to the separation chamber via the introduction passage. The annular space is provided around the lid and connected to the reservoir chamber via an oil passage. The reservoir chamber is connected to a crank chamber of a pressure lower than that in the discharge chamber. | 01-28-2010 |
| 092580100 |
KNOCKDOWN OR FLOW CONDUIT STORAGE OR RETRIEVAL MEANS | 2 |
| 20110000364 | Pump with Pivoting Needle - A hand pump with a rotatable portion of the pump head. The needle or adapter for attaching the pump to an inflatable is associated with the rotatable portion of the pump head so that the needle may be positioned in a first position for use and a second position for storage. The needle is protected by a sleeve when in the second position. | 01-06-2011 |
| 20110252959 | Pump - A pump includes a barrel slideably receiving an end of a piston rod. A valve seat is mounted to the barrel and has an air passageway. An adapter is mounted to the valve seat and includes a channel in communication with the air passageway. An end of a hose is connected to the channel. A coupling seat is mounted to the other end of the hose. A connecting block is mounted around the coupling seat. The connecting block is positionable to a side of the barrel. Two rotary inflation nozzles of different specifications are mounted to two ends of another hose. Each rotary inflation nozzle has a coupling thread for engaging with an inner thread of the coupling seat. When not in use, one of the rotary inflation nozzles is inserted into the barrel, and the other rotary inflation nozzle is engaged with an end portion on the piston rod. | 10-20-2011 |
| 092136000 |
WITH TOOTHED GEAR, SPLINE OR THREAD RIGID WITH WORKING MEMBER | 2 |
| 20100192765 | FIELD ADJUSTABLE PISTON ACTUATORS - Field adjustable piston actuators are described. An example field adjustable piston actuator includes a housing having opposing openings and a chamber. Additionally, the example piston actuator includes a first plate coupled to the housing and adjacent one of the opposing openings. Further, the example piston actuator includes a second plate coupled to a yoke and the housing. The second plate is adjacent the other one of the opposing openings. Further still, the piston actuator includes a volume adjuster to provide field adjustment to change a volume of the chamber. | 08-05-2010 |
| 20100018387 | ROTARY ACTUATOR - In cylinder chambers | 01-28-2010 |
| 092128000 |
WITH ASSEMBLY OR DISASSEMBLY FACILITATING MEANS | 2 |
| 20110247487 | LINEAR ACTUATOR - The present invention relates to a linear actuator. A slide table of the linear actuator includes a table main body and an end plate connected to another end of the table main body. On a base portion of the table main body, four workpiece retaining holes are formed, and fitting seats are disposed respectively about the workpiece retaining holes on radial outer sides thereof. The fitting seats are formed at the same time that the table main body is formed by press molding. | 10-13-2011 |
| 20100319529 | Valve Cap - There is disclosed a valve cap for sealing an aperture in a pump; a plugging assembly for use in a valve cap to provide a seal at an aperture in a pump; a docking unit for use with a plugging assembly for sealing an aperture in a pump; and a method of sealing an aperture in a pump. In an embodiment of the invention, a valve cap ( | 12-23-2010 |
| 092117000 |
MOVING CYLINDER | 2 |
| 20110179947 | REMANUFACTURING HYDRAULIC PUMPS - A hydraulic pump can be remanufactured to save the investment in its components that are not seriously worn or failed. Some of the worn components, such as the pump barrel and yoke, can be salvaged by replacing or rebuilding the worn features. In particular, a worn internal spline on the pump barrel can be replaced by a spline insert that is threaded to the pump barrel and includes a new internal spline. A worn actuation tab on a yoke for contacting an actuating piston can be replaced by adding a new tab wear button. | 07-28-2011 |
| 20110100208 | Air pump producing high pressure - Manually operated air pump for multistage compression of ambient air comprises a multiple coaxial cylinder arrangement. The air inlet ( | 05-05-2011 |
| 092139000 |
WITH CYLINDER WALL CONTACTING GUIDE ARTICULATED TO PISTON | 2 |
| 20100275772 | COMPRESSOR SYSTEM AND FRAME - A reciprocating compressor is provided. In one embodiment, a reciprocating compressor frame includes a central body and at least two crosshead guides extending from opposite sides of the central body. Additionally, the compressor frame crosshead guide support structures extending outwardly from the central body along a respective crosshead guide. Other embodiments of compression systems, devices, and frames of such systems are also provided. | 11-04-2010 |
| 20100242720 | Bimetallic Crosshead - A reciprocating pump assembly having a crankshaft rotatable by an attached motor and coupled by a connecting rod to a crosshead member. On a side opposite the connection to the connecting rod, the crosshead member connects to a plunger. The plunger is coaxially disposed in a cylinder provided in a cylinder block. Rotating the crankshaft reciprocates the crosshead member and attached plunger. In an embodiment the crosshead member includes an outer shell and a core portion within the shell formed from a material different from the shell material. | 09-30-2010 |
| 092109000 |
PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM | 2 |
| 20100186583 | Hollow double rod cylinder actuator - A double hollow rod cylinder is provided. The cylinder includes a cylinder body and a piston apparatus. | 07-29-2010 |
| 20100050860 | Single-Acting Pneumatic Cylinder for Use on a Locomotive Platform - The pneumatic cylinder includes a cylinder body, a non-pressure head, a hollow piston rod, a piston head, and a push rod. The cylinder body has a mounting flange and an inlet port. The non-pressure head has a mounting flange. The hollow piston rod has an open end and a closed end. The piston head is secured to the hollow piston rod and defines the closed end of the hollow piston rod. The push rod has a socket end inserted within the hollow piston rod and a coupler end. The non-pressure head has a hollow rod guide bearing and a hollow rod seal and the piston head has a piston guide bearing and a piston seal. The hollow rod guide bearing and the hollow rod seal each slidably engage the hollow piston rod. The piston guide bearing and the piston seal each slidably engage the cylinder body. | 03-04-2010 |
| 092051000 |
MUTUALLY RELATIVELY MOVABLE CYLINDER OR SLEEVE, MEMBER SEALINGLY SLIDABLE THEREIN AND OUTER CYLINDER THEREFOR | 2 |
| 20100307331 | TELESCOPIC COMPOSITE CYLINDER HYDRAULIC HOIST - The present invention is a telescopic composite cylinder that functions as a hydraulic hoist incorporating multiple cylinders formed of composite materials. The walls of the multiple cylinders may be formed of pultruded composite material, or a combination of composite materials. The cylinders of the hydraulic hoist may incorporate a plurality of piston and sleeve assemblies that are mounted so as to invoke a telescopic relationship between the multiple cylinders. The materials that the cylinders are formed of may create walls having a smooth surface that can eliminate problems facing hoists formed of other materials, for example, such as a honing process, fluid leakage and seal wearing problems. The hoist may be run on diesel fuel drawn from the tank of a vehicle. Additionally, the present invention may be releseably attached to a surface by way of a saddle mounting system. | 12-09-2010 |
| 20090173221 | FLUID POWER LINEAR DRIVE DEVICE - A fluid power linear drive device comprises a housing tube on whose outer periphery an output drive slide can slide linearly. For this purpose on the outer periphery of the housing tube there are two guide face pairs each having two guide faces extending along the housing tube on the outer periphery of the housing and, in the axial is direction of a first transverse axis of the housing tube, opposite each other, which in the direction of a second transverse axis, perpendicular to the first transverse axis, are spaced apart. The guide faces, as considered in a cross section of the housing tube, are slanted in each case in relation to the first and second transverse axis, first bearing elements arranged on the output drive slide are engaging the guide faces of the one, first guide face pair, such first bearing elements being able to pivot in relation to a pivot axis extending in the longitudinal direction of the housing tube independently of each other in relation to the output drive slide, and the guide faces of the other, second guide face pair are engaged by second bearing elements arranged of the output drive slide, the transverse position of the second bearing elements assumed in the axial direction of the first transverse axis in relation to the output drive slide being able to be varied. | 07-09-2009 |
| 092054000 |
ROTATING CYLINDER | 2 |
| 20090199706 | Axial Piston Machine - An axial piston machine includes a housing and pistons situated in cylinder bores of a rotatable cylinder member, which pistons are supported on a pivoting cradle, the pivoting cradle being supported via at least one pivoting bearing having a bearing gap that has fluid acting on it. The axial piston machine further includes a control and/or regulating device is provided for the control and/or regulation of the fluid pressure in the bearing gap. | 08-13-2009 |
| 20110094375 | Axial piston machine, recoil plate and method of manufacturing a recoil plate - The invention relates to an axial piston machine, in addition to a swash-plate for said machine and a method for producing a swash-plate. The swash-plate ( | 04-28-2011 |
| 092107000 |
ANNULAR WORKING MEMBER OR ANNULAR LINEARLY EXTENDING CHAMBER THEREFOR | 1 |
| 20110132188 | MULTI-PART PISTON CONSTRUCTION FOR A BRAKE CALIPER OF A DISK BRAKE - A multi-part piston for a brake saddle of a hydraulically and/or mechanically and/or electromechanically actuated disk brake is described herein. The piston is a pot open on one side and including a base and a wall attached thereto in one piece. The base can be impinged by brake pressure coming from the inside of the pot so that an outward-facing abutting surface of the base can be pressed against a brake lining. The inside of the pot receives at least one pressure piece associated with a parking brake mechanism. For simplified manufacture in the form of a modular piston system for use in various applications, it is proposed that the pressure piece and the base comprise conical surfaces facing one another for transferring braking pressure. | 06-09-2011 |
| 092086000 |
WITH REMOVAL CONDUIT FOR LIQUID SEEPAGE FROM EXPANSIBLE CHAMBER | 1 |
| 20090000468 | Procedure For The Loading Of A Working Cylinder, Control Module For It, Working Cylinder And Utilization Of The Same - The invention demonstrates how energy saving working cylinders are loaded with fluid under pressure in order, for example, to power devices for tensioning (toggle joint tensioning apparatus), and/or compressing and/or jointing and/or stamping and/or embossing and/or punching and/or welding, if necessary, under the interposition of gearing parts such as guides, parallelogram gears, toggle joint articulations or the like, with the fluid supply being controlled in such a way during the no-load stroke (idle stroke) of the piston ( | 01-01-2009 |
| 092003000 |
WITH DISENGAGEABLE ROTARY DRIVE FOR MOVING WORKING MEMBER | 1 |
| 20120017756 | PNEUMATO-MECHANICAL REGENERATIVE POWER SOURCE - A pneumato-mechanical regenerative power source converts mechanical rotational power at an input/output shaft to stored potential energy, and vice versa, by coupling the input/output shaft to a ball screw via a planetary gear system, which translates a ball nut in cooperation therewith, which in turn translates a piston that provides for either compressing or expanding an associated energy storage gas. A first roller-clutch mechanism provides for locking the carrier of the planetary gear system when storing energy, and releasing the carrier when releasing stored energy, wherein upon release, the ball screw is coupled to the input/output shaft via an one-wayoverrunning clutch, and the carrier may be locked to limit the release of stored energy. | 01-26-2012 |
| 092084000 |
RESILIENT MEANS INTERPOSED BETWEEN WORKING MEMBER AND RELATIVELY MOVABLE POWER TRANSMISSION ELEMENT | 1 |
| 20110132187 | HYDRAULIC STORED-ENERGY SPRING MECHANISM - Exemplary embodiments are directed to a hydraulic stored-energy spring mechanism for a high voltage circuit breaker. The spring mechanism includes a working cylinder situated in a working cylinder housing, at least one spring and at least one compression piston. The compression piston is slidably displaceable in a storage cylinder. The at least one storage spring pressurizes fluid located in the storage piston via the compression piston. The storage spring is held in a form-fitting manner by a support tube unit in the preloaded state. | 06-09-2011 |
| 092137000 |
WITH FLEXIBLE TRANSMISSION ELEMENT SECURED TO WORKING MEMBER | 1 |
| 20090064857 | Pump Plungers and Methods - Various embodiments of the invention provide pumps, plungers and plunger assemblies, as well as methods of using them. In accordance with some embodiments, a plunger may comprise a ceramic material and/or may have a facial profile that may allow for more efficient pumping operations. In particular embodiments, for example, a plunger may have a facial profile that allows for deformation of at least a portion of the plunger when the face of the plunger is in contact with a pressurized fluid. Other embodiments provide plunger assemblies, which may comprise a flexible coupling attachment. Yet other embodiments provide pumps comprising such plungers and/or plunger assemblies. | 03-12-2009 |
| 092261000 |
MISCELLANEOUS (E.G., CRANKCASE) | 1 |
| 20100242721 | LINEAR COMPRESSOR - The present invention provides a linear compressor, including: a cylinder having a compression space of refrigerant therein; a piston linearly reciprocated inside the cylinder to compress the refrigerant; a supporter connected to the back of the piston; a plurality of front and rear main springs for elastically supporting the supporter; a motor cover installed at the front of the supporter with a predetermined interval in an axis direction to support the front main springs, a pair of supporting ends being formed by partially cutting an inner portion of the motor cover and bent backward; and a rear cover installed at the back of the supporter with a predetermined interval in an axis direction to support the rear main springs, and fixedly welded to the supporting ends of the motor cover. Unnecessary parts of the motor cover can be welded to the rear cover to prevent a material loss, and a mass-production process can be simplified to improve productivity. | 09-30-2010 |
| 092142000 |
WITH RESERVOIR FOR NON-COMPRESSIBLE WORKING FLUID | 1 |
| 20110048225 | CYLINDER APPARATUS - On a protrusion-formation portion of a rod guide, there are provided a first annular protrusion for supporting a radially outer side of a lid body and a second annular protrusion for supporting a radially inner side of the lid body. Accordingly, when an upper end side of an outer cylinder is caulked, the first annular protrusion provided to the rod guide is allowed to sandwich and fix the radially outer side of the lid body between the first annular protrusion and the caulked portion. Further, although the lid body is strongly pressed to the rod guide with use of a presser at the time of caulking the upper end side of the outer cylinder, a pressing force acting onto the lid body can be received by the second annular protrusion. As a result, the lid body is prevented from being permanently deformed. With this structure, the lid body can be formed to have a small thickness dimension. | 03-03-2011 |
| 092087000 |
WITH NON-SEALING CLEANING MEANS | 1 |
| 20110219947 | HIGH-PRESSURE FUEL PUMP - A high-pressure fuel pump includes a housing and a swash plate which is mounted in the housing and is arranged in an oil space of the housing. A drive shaft is connected to the swash plate and passes through a housing opening, and with a seal for the drive shaft, which seal is mounted in the housing in the region of the housing opening. The high-pressure fuel pump has a plurality of pump elements for sucking up, compressing and ejecting fuel, which pump elements can be acted upon consecutively by the rotatable swash plate. In a pump of this type, the fuel pump has at least one magnet, the magnetic force field of which acts on the oil space of the housing. Premature wear of the pump, in particular premature wear of the seal, is avoided since the magnet separates off iron-containing dirt particles found in the oil. | 09-15-2011 |
| 092002000 |
ONE WORKING MEMBER RECIPROCATES AND ANOTHER ROTATES COMMON OUTPUT MEMBER | 1 |
| 20080282878 | Pneumatic rotary actuator - A pneumatic rotary actuator includes a housing formed of a front shell and a rear shell, a shaft tube inserted through the housing, a piston fixedly mounted on the shaft tube and dividing the inside space of the housing into a front air chamber and a rear air chamber, a rotary member provided around the shaft tube and defining an air gap around the shaft tube in communication with the rear air chamber, an inner race mounted around the rotary member, a locknut fastened to the rotary member to lock the inner race to the rotary member, and a locating frame supported on a bearing around the inner race and having a first air inlet for guiding compressed air to the front air chamber through a first air passageway to move the piston and the shaft tube backwards and to further force a chucking head to grip the workpiece and a second air inlet for guiding compressed air into the rear air chamber to move the piston and the shaft tube forwards and to further release the chucking head from the workpiece. | 11-20-2008 |
