| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418104000 | WITH MECHANICAL SEALING | 82 |
| 20100074785 | COMPRESSOR - A compressor includes a screw rotor and a gate rotor arranged to form a compression chamber. The screw rotor has an outer circumferential surface with at least one groove portion. The gate rotor has a plurality of tooth portions. Preferably, a first plane contains the screw rotor center axis, a second plane orthogonally intersects the screw rotor center axis, and a third plane orthogonally intersects the first plane and the second plane. The gate rotor center axis passes through an intersection point of the first, second and third planes. The gate rotor center axis is inclined relative to the second plane toward the same side as the groove portions of the screw rotor, as viewed in a direction perpendicular to the third plane. | 03-25-2010 |
| 20090304540 | PD Pumps with a Common Gearbox Module and Varying Capacities and Easy Access to Mechanical Seals - Rotary lobe pump and circumferential piston pump designs are disclosed where the drive and driven shafts are detachably connected to their respective rotors. The rotors are disposed in a pump or rotor casing, which is sandwiched between a head cover and a gearbox. The drive and driven shafts pass through mechanical seal assemblies, which are sandwiched between the first and second rotors and the gear box respectively. The seal assemblies can be serviced or replaced by simply removing the head cover and removing the rotors from the drive and driven shafts. The pump casing does not need to be removed to replace or service the seal assemblies. Further, the capacities of the disclosed rotary lobe and circumferential piston pumps can be modified without changing the gearboxes or shaft length. To modify a pump capacity, all that needs to be changed are the rotors, the pump or rotor casing and, in some designs, the head cover or cover plate. In some designs, the cover plate is universal to the gearbox so that only the rotors and pump casing need to be changed to modify the pump capacity. | 12-10-2009 |
| 20130064704 | ROTATION DEVICE INCLUDING SEAL STRUCTURE - A seal member is configured so that an annular rubber member is disposed in an annular storage chamber of a resin annular member. Thus, the rubber annular member is not directly in contact with a drive shaft, and the rubber annular member can be prevented from wearing or peeling without requiring a rotation stopping structure for the seal member. Furthermore, the seal member is provided with first and second communication mouths, so that a brake fluid pressure is applied to compartments obtained by dividing the annular storage chamber using the rubber annular member. Thus, the rubber annular member is pressed, and then is elastically deformed, and accordingly, the resin annular member is expanded by the elastic force. Thus, a self-sealing operation can be performed on the basis of a high pressing force. | 03-14-2013 |
| 20090238707 | VANE PUMP - A vane pump having a pump containing a rotor driven via a drive shaft with the rotor having a number of generally radially extending grooves distributed over its circumference each of which grooves support a vane shaped delivery element in sliding fashion. The rotor is encompassed by an eccentric circumferential wall, against which the radially outer ends of the vanes rest. Housing end walls are situated adjacent to the rotor in the direction of its rotation axis. When the rotor turns, the vanes deliver medium from a suction region to a pressure region offset in the rotation direction. An annular groove is provided in at least one of the housing end walls which annular groove encompasses the rotation axis of the rotor, is situated opposite the inner regions delimited in the grooves of the rotor by the vanes, and is connected to the pressure region via a connecting groove in the housing end wall. The annular groove extends in eccentric fashion in relation to the rotation axis of the rotor. | 09-24-2009 |
| 20080240963 | ROTOR SHAFT SEALING STRUCTURE FOR OIL-FREE ROTARY COMPRESSOR - A rotor shaft sealing structure of an oil-free rotary compressor is provided, with which is reduced a risk of occurrence of lubrication oil intrusion into the compression chamber ( | 10-02-2008 |
| 20090148329 | VANE PUMP AND VAPOR LEAKAGE CHECK SYSTEM HAVING THE SAME - A vane pump includes a motor, a rotor rotated by the motor, a first casing having a pump chamber accommodating the rotor and a first flat part in a periphery of an opening of the pump chamber, a second casing having a second flat part joined to the first flat part to gas-tightly or liquid-tightly close the opening of the pump chamber, an elastic sheet disposed between the second casing and the motor, and a screw penetrating the first casing, the second casing and the elastic sheet. The screw is configured to fasten and join the first casing, the second casing and the elastic sheet to the motor. | 06-11-2009 |
| 20080232993 | Fastener member and gas compressor using the same - In a gas compressor, a fastener part is fastened by a fastener member comprised of a bolt coated with a zincate bath and a gasket, any leakage from the fastener member is prevented, the gas compressor including a case | 09-25-2008 |
| 20080253914 | LIQUID INJECTION TYPE SCREW COMPRESSOR - A liquid injection type screw compressor in which, in a compression stroke of an working space formed by male and female rotors, liquids such as oil or water is prevented from leaking from the high pressure working space to a gas inlet side, suction resistance of gas sucked from the gas inlet to a rotor casing is reduced to improve volumetric efficiency, and shape forming of the casing is simplified. | 10-16-2008 |
| 20130011289 | IMPROVED FLUID COMPRESSOR AND/OR PUMP ARRANGEMENT - The present invention relates to a compressor or pump unit for the production or flow of compressed fluid and more particularly to a new uniquely designed compressor which has the capabilities to both draw fluid from an intake opening and direct dischargeable compressed fluid to a storage tank utilising a single compressor chamber simultaneously. | 01-10-2013 |
| 20110223050 | VANE PUMP APPARATUS - Disclosed herein is a vane pump apparatus. The disclosed vane pump apparatus comprises a housing having an outlet channel; a reservoir tank which stores working oil and which is coupled to the housing; and a vane pump installed inside the reservoir tank to discharge the compressed working oil to the outlet channel. | 09-15-2011 |
| 20120141314 | VACUUM PUMP - The invention relates to a vacuum pump having a cup-shaped housing, a rotor, eccentrically mounted for rotation in the housing, at least one blade mounted in or on the rotor, and a housing cover closing the cup-shaped housing, wherein the rotor has a rotor shaft that passes through the cup-shaped housing and by which the rotor is driven, wherein the rotor shaft is sealed by means of a seal in the housing. | 06-07-2012 |
| 20080240964 | SHAFT SEAL DEVICE FOR OIL-FREE ROTARY COMPRESSOR - A shaft seal device is provided, with which an optimum radial clearance is always maintained between the inner circumferential surface of a carbon ring and an outer circumferential surface of a rotor shaft sleeve when temperature thereof varies in operation of the oil-free rotary compressor, and gas leak through the radial clearance can be suppressed to a minimum not influenced by operation condition of the compressor and intrusion of lubricating oil into the rotor chamber is prevented. As a result, an oil-free rotary compressor can be operated to discharge clean compressed gas not contaminated with lubrication oil. The shaft seal device to be located between the rotor chamber and rotor shaft bearing with a very small radial clearance retained between the inside surface of the shaft seal device and the outer surface of the rotor shaft sleeve | 10-02-2008 |
| 20100316520 | LIQUID PUMP - The invention relates to a liquid pump having a pump housing, a pump unit for generating a pilot pressure, a drive shaft used to drive the pump unit and guided out of the pump housing on a drive/output side, and a sealing unit sealing the passage. When the liquid pump is subjected to an admission pressure, the pressurized liquid generates, in the region of the sealing unit, at least one pressure field facing the sealing unit and at least one pressure field facing away from the sealing unit. According to the invention, an asymmetrical arrangement of the pressure fields is provided. | 12-16-2010 |
| 20080219875 | Magnetic drive vane pump - A magnet drive rotary vane pump has a casing with a pump cavity. A rotor carrying a plurality of vanes is disposed within the pump cavity to be rotatable about an eccentric axis with respect to the pump cavity for drawing the fluid into the pump cavity and expelling it out of the pump cavity. The rotor is configured to have a rotor magnet which is magnetically coupled to a stator magnet mounted on the casing outwardly of the pump cavity for driving the rotor. The rotor magnet is configured to have its major portion disposed in an overlapping relation with the stator magnet. Thus, the rotor magnet can be mechanically isolated from the stator magnet disposed outside of the casing to establish a sealless coupling therebetween for realizing leakage free pump. | 09-11-2008 |
| 20100061872 | Gear Pump - A gear pump includes a drive shaft, a rotatable pump element mounted on the drive shaft, a side wall member disposed on one side of the pump element, and formed with a shaft hole through which the drive shaft extends, and a side plate disposed on the other side of the pump element. The gear pump further includes a connecting section connecting the drive shaft with the pump element in a manner to prevent relative rotation and to allow relative axial movement between the drive shaft and the pump element. The connecting section includes a drive recess formed in the pump element, and a drive projection projecting radially outwards from the drive shaft, and engaging in the drive recess to prevent the relative rotation. The drive projection is arranged to limit the axial movement of the drive shaft relative to the pump element with one of the side wall member and the side plate. | 03-11-2010 |
| 20120164015 | WATER INJECTION TYPE SCREW FLUID MACHINE - A water-lubrication type screw fluid machine has a first non-contact seal, a second non-contact seal and a lip seal disposed between a rotor chamber and a bearing for a rotor shaft. The bearing is located on the high pressure side and in this order from the rotor chamber side. the bearing includes a low pressure communicating channel for allowing an outflow space formed on the rotor chamber side with respect to the first non-contact seal to communicate with a low pressure channel for the target gas communicating with a low pressure space inside the rotor chamber or the rotor chamber, a pressurized communicating channel for introducing high-pressure target gas into a pressurized space formed between the first and second non-contact seals, and an open communicating channel through which an open space formed between the second non-contact seal and the lip seal opens to the outside of the casing. | 06-28-2012 |
| 20110123381 | COMPRESSOR - The present invention provides a compressor, comprising: a stator ( | 05-26-2011 |
| 20100239448 | FKM OR FFKM MULTIPLE LAYERS SEAL - A vacuum pump comprises two stator components and a seal located between the components to provide a fluid-tight seal between the components. The seal comprises an annular plastics tube housing an annular reinforcing member, the tube being at least partially surrounded by a sleeve formed from one of FKM elastomer and FFKM elastomer. | 09-23-2010 |
| 20110311385 | Vane Pump and Vapor Leakage Check System Having the Same - A vane pump includes a housing defining a pump chamber; a rotor rotatably arranged in the pump chamber; and a motor to rotate the rotor. An imaginary plane is defined to bisect the pump chamber in an axis direction. The housing has a first inlet port and a second inlet port located symmetrical with each other with respect to the imaginary plane, and the housing has a first outlet port and a second outlet port located symmetrical with each other with respect to the imaginary plane. | 12-22-2011 |
| 20120100027 | Internal-Rotation Type Gear Pump and Method of Assembling and Repairing an Internal-Rotation Type Gear Pump - A method of assembling and repairing an internal-rotation type gear pump has a preparing step, a disassembling step, a taking step, a repairing step and an assembling step. The preparing step includes preparing an internal-rotation type gear pump with a bearing mount device, a gland-sealing device and a pump device with a casing, a side cover, a driven gear and a driving gear. The disassembling step includes disassembling the side cover from the casing and disassembling and separating the gears from the driving shaft. The taking step includes separating and taking the gland-sealing device from the casing. The repairing step includes repairing the mechanisms inside the internal-rotation type gear pump and replacing with a new one if one of the mechanisms is broken. The assembling step includes putting the gland-sealing device into the casing, assembling the driving gear on the driving shaft and assembling the side cover on the casing. | 04-26-2012 |
| 418105000 | Abutment position adjustment | 1 |
| 20090169407 | Rotor Compressor - A rotary piston compressor comprises a cylinder block ( | 07-02-2009 |
| 418106000 | Vane position adjustment | 6 |
| 20130052071 | VANE PUMP - A back pressure groove which is formed in a plate coming into contact with a side surface of a rotor and is communicated with a high pressure chamber is formed in such a manner as to copy an annular locus drawn by a base end of a vane which slides within a vane groove while coming into slidable contact with a cam surface of a cam ring, at a time when the rotor rotates one time. | 02-28-2013 |
| 20090016918 | PNEUMATIC VANE MOTOR WITH BY- PASS MEANS - A pneumatic vane motor with a stator cylinder having an air inlet opening and an air outlet opening, a rotor eccentrically journalled in the cylinder and carrying a number of sliding vanes which divide the cylinder into moving cells, wherein the cylinder comprises a by-pass passage located between the air inlet opening and the air outlet opening and arranged to leak air from a pressurized working cell into a preceding cell before the working cell reaches the outlet opening, thereby using a preceding cell as an expansion volume for sound attenuation. | 01-15-2009 |
| 20090162232 | Vane pump - A vane pump includes slits formed in a base portion of a rotary unit rotating in a casing and extend radially from a rotation axis of a rotary unit to be opened outwardly in a radial direction, a vane received in each of the slits to be protruded from or retreated into the slit, an annular chamber formed around the base portion in the casing and pump rooms formed by defining the annular chamber by using the vanes. The vane pump is operated to discharge fluid sucked into an associated pump room by rotating the rotary unit and thereby periodically increasing or reducing volume of the pump rooms. The vane pump further includes a fluid force generating portion provided on at least one of the rotary unit and the casing to generate fluid force to the upper side in an axial direction of the rotation axis by rotation of the rotary unit. | 06-25-2009 |
| 20120156077 | CAM LINER PROFILE - A vane pump is provided and includes a liner having an inlet window and a discharge window, the liner being formed to define a cam surface and a rotor carrying a plurality of radially extending vanes which are forced outwardly such that vane tips thereof contact with the cam surface, the rotor having a direction of rotation such that one end of the inlet window is an upstream end and an opposed end is a downstream end, a radius of each of the vane tips being approximately 0.114 inches (0.3 cm) and a profile of the cam surface being defined in accordance with the radius of the vane tips. | 06-21-2012 |
| 20120076682 | VANE PUMP - A lubricating oil to be supplied to a vane pump | 03-29-2012 |
| 20120087820 | ROTARY DEVICE - A device includes a ring having a tubular interior surface centered about an axis. The surface includes a plurality of axially extending, inwardly-projecting ridges. On opposite sides of each ridge is a first port and a second port. A rotor rotates in the ring about the axis. A plurality of vanes is mounted to the rotor body for rotation therewith and for radial extension and retraction relative thereto such that the surface can be swept by the vanes. The rotor and the ring are sealed to permit fluid communication into and out of the device only via the ports. The vanes retract and extend as the body rotates such that chambers are created which decrease in volume when in communication with the first ports and chambers are created which increase in volume when in communication with the second ports. A fluid pressure mechanism can cause vane retraction. | 04-12-2012 |
| 418107000 | By changing working member or cylinder relative position | 2 |
| 20110142705 | ROTARY COMPRESSOR - A rotary compressor is provided. The rotary compressor may include a plurality of cylinders each having a suction port formed such that an intersection of a center line of the suction port and a center line of a vane slot is positioned at a predetermined interval closer to the vane slot than to an intersection between a center of an inner diameter of the cylinder and the center line of the vane slot. A proximal end of the suction port may be formed in the vicinity of the vane slot so as to advance a compression start angle of a compression space and reduce a dead volume between the vane slot and the suction port, thus improving compressor performance. | 06-16-2011 |
| 418108000 | Radially adjustable | 1 |
| 418109000 | Adjustable working member | 1 |
| 20100124512 | Method for timing a polymer pump containing polymer - A method for restoring the registry of opposed shafts that carry meshing pump teeth inside a polymer pump that contains polymer without removing polymer from within the pump, the method using an asymmetric pattern of apertures in the shaft ends and a template having a pattern of holes that matches the pattern of apertures, and dowels that closely fit the holes and apertures. | 05-20-2010 |
| 418110000 | By axially relatively moving working member sections | 1 |
| 20090220370 | GAS COMPRESSOR - A compressor includes a compression mechanism for suctioning gas through a suction path to compress the gas and discharging the compressed gas and a check valve for preventing backward-flow of the gas in the suction path. The check valve includes an accommodation hole (its one end is opened toward the suction path and its another end is functioned as a reservoir), a valving element accommodated within the accommodation hole movably, a valve seat provided at the opened end of the accommodation hole for closing the suction path while the valving element is pressed thereonto and an urging component for urging the valving element toward the valve seat. A release groove is grooved on an inner surface of the accommodation hole. The reservoir is communicated with the suction path through the release groove. The compressor can reduce machining cost, component count and weight in respect to the check valve. | 09-03-2009 |
| 418111000 | By axially relatively moving vane or abutment sections | 3 |
| 20100150762 | SYSTEM FOR SEALING THE PISTON OF ROTARY PISTON MACHINES - A sealing system of rotary piston machines, the rotor excludes rotor discs which are arranged next to one another, and which are seated on the common rotor axle and are pressed apart from one another by acting spring and/or gas forces in the joints between the discs in such a way that the end sides of the discs which point towards the side walls of the housing bear sealingly against the latter and thus prevent the access of the medium to the axles. Assemblies comprising movable shaped lamellae which adapt to the changing joint widths and prevent an inner flow around the rotor are present in the part joints between the discs. | 06-17-2010 |
| 20090155113 | VARIABLE DELIVERY VANE OIL PUMP - A variable delivery vane oil pump, is provided with a stator ( | 06-18-2009 |
| 20120034121 | BALANCE PLATE ASSEMBLY FOR A FLUID DEVICE - A fluid device includes a displacement assembly and a balance plate assembly disposed adjacent to the displacement assembly. The displacement assembly includes a ring and a rotor disposed in a bore of the ring. The ring and rotor cooperatively define a plurality of volume chambers. The balance plate assembly includes a housing that defines a cavity. A balance plate is disposed in the cavity. The balance plate includes a first end surface and an oppositely disposed second end surface. The balance plate is adapted to move axially between a first position in which the second end surface of balance plate abuts a first end face of the ring to a second position in which the second surface of the balance plate is recessed in the cavity. | 02-09-2012 |
| 418125000 | Seal on cylinder engaging rotary member separates inlet and outlet ports | 3 |
| 20100158737 | SCREW COMPRESSOR - A screw compressor includes a casing, a screw rotor and a gate rotor. The casing has a cylinder. The screw rotor is cylindrical-shaped and configured to be fitted into the cylinder. The gate rotor is configured to be engaged with the screw rotor. A, outlet width of a seal surface of the casing on a gas-outlet side of the screw rotor is larger than an inlet width of the seal surface on a gas-inlet side of the screw rotor. The seal surface of the casing is opposed to one surface of the gate rotor. | 06-24-2010 |
| 418126000 | Engages plural rotary members | 1 |
| 20100124513 | Gear Pump - A gear pump includes a gear to be driven by a drive shaft, a pair of side plate members adjoining side surfaces of the gear, respectively, to restrain leakage of an operating fluid, and a tip seal member or seal block for sealing the gear tip or circumference of the gear. At least one of the side plate members and the tip seal member are integral parts of a sealing member. | 05-20-2010 |
| 418129000 | With resilient biasing means | 1 |
| 20120034122 | PUMP WITH A RESILIENT SEAL - A pump comprises a housing, with an interior defining a rotor path, an inlet formed in the housing at a first position on said rotor path, an outlet formed in the housing at a second position on said rotor path spaced from said first position. A rotor is rotatable in the housing with a first surface that seals against the housing. A second surface is formed on said rotor circumferentially spaced from said first surface and forms a chamber that travels around said rotor path to convey fluid from the inlet to the outlet. A resilient seal formed with the housing is located on the rotor path to prevent fluid flow from said outlet to said inlet past the seal. A passage may be provided to supply fluid to an under surface of the seal at a pressure that acts to urge the seal against the rotor. | 02-09-2012 |
| 418131000 | Axially movable end wall or end wall portion | 5 |
| 418133000 | Surface abutting working member abuts another coplanar cylinder surface portion | 3 |
| 20110189043 | VANE PUMP - A vane pump in which oil is drawn from at least one side, in an axial direction, of a cam ring and is discharged from at least one side, in the axial direction, of the cam ring, has a portion defined by a groove formed on an inner circumference surface of the cam ring. The groove extends along a circumferential direction of the inner circumference surface of the cam ring and is arranged in a position including a middle of an axial direction width on the inner circumference surface. The groove is arranged in an oil suction section or an oil discharge section of the cam ring. | 08-04-2011 |
| 20100135838 | Power Steering Oil Pump - A power steering oil pump may include a pump housing, a rotor that is equipped with a plurality of vanes and coupled to the pump housing to rotate therein, a cam ring inserted between the rotor and the pump housing to form a pumping space between the cam ring and the rotor, a rotor shaft that passes through the rotor and is fitted therein to transmit rotational force to the rotor, and a bush that has at least a first oil groove on an inner circumference thereof and supports the rotor shaft to a pump cover coupled to the pump housing while covering a portion of the rotor shaft which passes through the rotor, wherein at least a second oil groove is formed on an end portion of the vanes contacting with an inner circumference of the cam ring. | 06-03-2010 |
| 20100329917 | VANE PUMP - In a vane pump, a communication groove that provides communication between a communication hole and a discharge port is formed in an outer side face of a rear housing. An opening of the communication groove is blocked by a fitting face of a control valve case. A back-pressure introduction passage that provides communication between the communication hole and an outlet is formed by the communication groove and the fitting face of the control valve case. The back-pressure introduction passage is formed between the rear housing and the control valve case, that is, on the outer side of the housing. | 12-30-2010 |
| 418135000 | Spring biased | 2 |
| 20110211985 | Pump - A pump, particularly a vane-type pump, including a rotor guiding at least one vane and resting against at least one pressure plate, which has at least one pressure through-hole and at least one under-vane through-hole, the holes being connected to a pressure outlet provided in a housing of the pump or in a transmission housing. In between the pressure plate and the housing a flow guide device is arranged, which delimits a fluid path from the pressure through-hole past the under-vane through-hole to the pressure outlet. | 09-01-2011 |
| 20110211984 | PUMP UNIT - A pump unit of a vane-type pump having no dedicated housing including a drive shaft, a rotor that interacts with the drive shaft and accommodates vanes, a contour ring surrounding the rotor, and a first and a second side plate which are disposed laterally of the contour ring. | 09-01-2011 |
| 418136000 | Seal element between working member and vane | 9 |
| 20110200477 | Gerotor hydraulic pump - A gerotor pump having an outer rotor defining an inner surface of the outer rotor, a thrust plate, a pressure plate, an inlet chamber for fluid intake through the thrust plate to be pressurized, and an outlet chamber for outputting pressurized fluid from the pressure plate. The gerotor pump includes an inner rotor assembly in rotating engagement with the outer rotor. The inner rotor assembly rotating about an axis, the inner rotor assembly comprises a rotor body, wherein the rotor body includes N (an integer greater than one) vane slots defining a first sealing surface, and the rotor body includes N inner openings around the axis, each of the inner opening adjoining a vane slot; and a plurality of vanes defining a second sealing surface, wherein the vane is disposed in the vane slot and in sealing engagement with the rotor body via the first and second sealing surfaces. The inner rotor assembly is in sealing engagement with the outer rotor by the vane engaging on the inner surface of the outer rotor. | 08-18-2011 |
| 20090087334 | Sliding Vane Compression and Expansion Device - A sliding vane compression and expansion device for both cryogenic and normal refrigeration cycles, including the production of liquefied natural gas, is disclosed herein. The device can operate in extreme conditions of pressure and temperature, and incorporates replaceable wear elements as well as functional design elements into a sliding vane device to permit processing of a wide variety of gases (for example, but not limited to, methane, nitrogen, oxygen, argon, etc.), liquids and other media under very extreme conditions, including, but not limited to, super-heated steam, cryogenic liquids, bi-phase gas/liquids (wherein both gaseous and liquid media co-exist or are created in the same area), plasma media, semi-solids and powders. | 04-02-2009 |
| 20090110584 | High pressure telescoping gear pumps and motors - Rotary seals in a telescoping gear pump/motor a feature that allows the seal to shift radially relative to other components while maintaining the seal integrity and without compromising the function of the bearings or the bushings needed to bear the load. | 04-30-2009 |
| 20100021331 | INTERNAL COMBUSTION ENGINE - The internal combustion engine in includes at least one compression chamber b*, formed by a housing | 01-28-2010 |
| 20080279709 | Driven Vane Compressor - A rotary vane device comprising a rotor and a vane positioned in a pumping chamber in a housing for rotation about respective eccentric axes, wherein the rotor has a rotor slot in which the vane is positioned, characterized by the vane being driven and the rotor following the vane. | 11-13-2008 |
| 418137000 | Mounted on working member | 4 |
| 20100003153 | COMPRESSOR - A compressor includes a screw rotor and a gate rotor. The screw rotor has a plurality of spirally extending groove portions disposed radially outwardly from the center axis of the screw rotor. The gate rotor has a plurality of tooth portions circumferentially arranged on an outer circumference to engage the groove portions. Preferably, an inclination angle of a groove portion side face contacting the tooth portions is inclined relative to a circumferential direction of the gate rotor varies. Alternatively a first plane contains the screw rotor center axis, a second plane orthogonally intersects the screw rotor center axis, a third plane orthogonally intersects the first and second planes, the gate rotor center axis is on the third plane, and the tooth portions do not overlap the first plane as viewed orthogonally relative to the third plane. | 01-07-2010 |
| 20120213656 | AXIAL PISTON HYDRAULIC ROTATING MACHINE - PROBLEM TO BE SOLVED: To provide an axial piston hydraulic rotating machine having high stability of a piston shoe. | 08-23-2012 |
| 20120263617 | Positive Displacement Rotary System - A positive displacement rotary system may include a main rotor and a slotted rotor. The main rotor can include an interior cavity and a fixed vane (or blade) that is attached to the peripheral and side walls of that cavity. The slotted rotor is positioned within the main rotor interior and includes a slot for the main rotor blade. The main and slotted rotors rotate about parallel axes that are offset from one another. As the rotors turn, separate chambers are formed between the blade and an inter-rotor seal, with the inter-rotor seal located at or near a rolling contact between the outer surface of the slotted rotor and an inner perimeter wall of the main rotor cavity. The separate chambers contract and expand as the rotors rotate. | 10-18-2012 |
| 418138000 | Oscillating | 1 |
| 20110194967 | VARIABLE DISPLACEMENT PUMP, OIL JET AND LUBLICATING SYSTEM USING VARIABLE DISPLACEMENT PUMP - A variable displacement pump arranged to supply a hydraulic fluid to an oil jet arranged to inject the hydraulic fluid to a piston of an internal combustion engine, the variable displacement pump includes: a pump constituting section arranged to be driven and rotated by the internal combustion engine, and thereby to discharge the hydraulic fluid; a movable member arranged to decrease the flow rate discharged from the discharge portion by moving in one direction; a control section configured to move the movable member in the one direction by a predetermined amount when the discharge pressure becomes a first discharge pressure, and to further move the movable member in the one direction when the discharge pressure becomes a second discharge pressure larger than the first discharge pressure, the first discharge pressure being set smaller than the predetermined pressure at which the oil jet starts to inject the hydraulic fluid. | 08-11-2011 |
| 418139000 | Seal element between abutment and cylinder or working member | 3 |
| 20090232689 | SUPERCHARGER WITH OUTLET BARS FOR ROTOR TIP SEAL SUPPORT - The invention is to reduce flutter and wear and improve the serviceability and wear life of tip seals for roots blower and screw type compressor superchargers where used for improved supercharger output and efficiency. As the seals travel over the outlet opening, the seals move outward in their slots, leading to flutter which may shorten their useful lives. As each seal reaches the center of the outlet opening, it is forced back into its groove by engaging a valley of the mating rotor with the likelihood of increased wear. The invention provides longitudinally spaced support bars extending laterally across the opening in the directions of rotation of the rotors. The support bars have inner surfaces machined with the associated rotor cavity bores and thus smoothly support the seals as they ride over the support surfaces. The support reduces the flexing of the seals and the resultant wear. Each seal contacts a support bar only during inward motion to the center of the opening where the machined bores intersect and the seal is moving into a valley of the associated rotor of the pair. To reduce edge effect wear of the seals, the width of the support bars may be made narrower from the outer edges of the outlet opening to the center, where each seal loses contact with its respective support bar. | 09-17-2009 |
| 20090285709 | Vane pump - A vane pump comprising a case, a rotor disposed in the case, the rotor having a bore, a plurality of vanes radially moveable with respect to the rotor extend from the rotor, a drive shaft engaged with the bore, a second shaft fixedly connected to the case and extending from the case to slidingly engage the bore, a land extending from each end of the rotor, each land cooperating with the case to seal a fluid flow, and each land further axially controlling a rotor position within the case by a sliding engagement, and the drive shaft retainable in a predetermined position with respect to the case. | 11-19-2009 |
| 20100215538 | Fuel pump - A fuel pump includes a housing having a cavity. The cavity has a rear surface, and a drive gear and driven gear are disposed in the cavity and in mesh with one another for pressurizing fluid. A floating wear plate and a fixed wear plate are disposed in the cavity and are in contact with the drive gear and the driven gear. A flow orifice is formed as part of the floating wear plate, and a portion of the pressurized fluid flows through the flow orifice to an area between the rear surface of the cavity and the floating wear plate, causing the floating wear plate to apply force to the drive gear and driven gear, and causing the drive gear and driven gear to apply force to the fixed wear plate, thereby compensating for any wear of the drive gear, driven gear, and wear plates. | 08-26-2010 |
| 418140000 | Seal element between working member and cylinder | 25 |
| 20080274001 | Rotary Expander - The upper and lower end surfaces ( | 11-06-2008 |
| 20110293458 | VANE CELL PUMP - The invention relates to vane cell pumps having a rotor mounted in a pump housing and driven by a shaft, multiple vane plates mounted in the outer circumference of this rotor, and an outer ring that surrounds the rotor and the vane plates, whereby this ring is disposed either directly in the pump housing, or in a setting ring that can be moved in the pump housing, along predetermined paths. The purpose is to develop a new type of vane cell pump having a new type of pump chamber geometry, which guarantees optimal, complete filling, in terms of flow technology, of the pump chambers, particularly at speeds of rotation in the range from 4500 rpm to beyond 6000 rpm, and furthermore is easy to manufacture, in terms of production technology. The vane cell pump according to the invention, having transverse grooves disposed in the cylinder mantle surface of the rotor, between the bearing grooves of the vane plates, running over the entire rotor width, disposed parallel to the bearing grooves of the vane plates, spaced apart from the bearing grooves by a bearing crosspiece, is characterized in that these transverse grooves have a non-symmetrical cross-section progression, which has a low point in each cell chamber, which point is always disposed behind the cell chamber center axis, seen in the direction of rotation. | 12-01-2011 |
| 20120189481 | ROTOR TYPE PUMP - A rotor type pump is provided. A rotor rotates and closely contacts an inner surface of a chamber, and a cam controls a sealing part, so that during a compression procedure, the sealing part, a convex surface of the rotor, and an inner surface of the chamber form a substantially hermetic space, and when a gas in the chamber is compressed to a set pressure, the compressed gas is guided out. Therefore, a smooth surface of the rotor closely contacts the inner surface of the chamber, and the gas in the chamber is compressed in a rotational manner, in which the to-and-fro movement of a piston is not required, and a dead point is prevented, so that operation is smooth and noise is not easily generated. Further, the rotor type pump does not need to use a lubricating fluid and offers extremely large compression capacity and excellent efficiency. | 07-26-2012 |
| 20110142706 | NOISELESS PRESSURE BLOWER - The present invention relates to a noiseless pressure blower including a main body having an inlet port and an outlet port; a pressing member which rotates to suck in fluid from the inlet port; a control member which rotates in contact with the pressure member to prevent the sucked in fluid from flowing to the inlet port; and an interlocking means for transmitting rotational force to the pressure member and the control member. The main body has two cylinders that communicate with each other. The pressure member includes a pressure rotating shaft which rotates by the interlocking means, and a spiral pressure plate provided on the pressure rotating shaft. The control member includes a control rotating shaft which rotates by the interlocking means, and a control body provided on the control rotating shaft, and which rotates in linear contact with the pressure plate. | 06-16-2011 |
| 20100034685 | SEAL FOR A ROTARY VANE PUMP - A pump includes a housing and a shaft rotatable about an axis. The shaft has a shaft diameter and has a portion disposed within the housing. A plurality of retractable vanes is coupled to the shaft and each vane includes a first end that contacts the housing. A seal element is positioned to define a seal between the shaft and the housing. The seal element includes a first bushing, a second bushing, and a dry seal assembly including a wiper that defines a diameter that is smaller than the shaft diameter. | 02-11-2010 |
| 20100310399 | Self-Triggering Rotor for Pneumatic Paddle Motor - A rotor for pneumatic paddle motor is described, comprising a plurality of segments ( | 12-09-2010 |
| 20100247362 | Gear Pump - A gear pump includes: a pump chamber formed in the housing; a gear disposed in the pump chamber; a side plate disposed between a wall of the pump chamber and the gear, and arranged to seal a side surface of the gear, the side plate including an annular receiving portion formed between the wall of the pump chamber and the side plate, the receiving portion having a bottom portion and a side wall portion; a seal member disposed in the receiving portion of the side plate, and arranged to liquid-tightly separate the low pressure chamber and the high pressure chamber of the pump chamber; a pressure introducing section arranged to introduce a pressure generated by the pump operation, to a space between the bottom portion of the receiving portion and the seal member, and thereby to separate the seal member away from the bottom portion of the receiving portion. | 09-30-2010 |
| 418141000 | Labyrinth | 1 |
| 20090041604 | Vane Machine With Stationary and Rotating Cylinder Parts - Vane machine with cylinder stationary and rotating parts is intended for use as a driving or a working machine, utilising compressible or non-compressible media as the working fluid. The vane-machine basic embodiment comprises: cylinder stationary part (A), cylinder rotating parts (B), rotor (C), covers (D), and vanes with grooves (F). | 02-12-2009 |
| 418142000 | On working member | 13 |
| 20100104462 | PUMP OR MOTOR - The invention relates to a pump or motor for liquid or gaseous media. The pump or motor has a shaft, which faces a working part, and has a common inclined sliding surface with the working part. The working part which limits the pump working chambers, wobbles in a positionally fixed housing. | 04-29-2010 |
| 20100040499 | SCREW PUMP ROTORS AND RING SEALS FOR SCREW PUMP ROTORS - A pump rotor for a screw pump, comprising a shaft, a thread on the shaft, the thread comprising a groove disposed on an outer surface thereof, and a seal disposed in the groove. The seal and the groove are configured to retain the seal in the groove while allowing radial displacement of the seal with respect to the thread as the pump rotor is deflected. | 02-18-2010 |
| 20080240965 | ROTOR SHAFT SEALING METHOD AND STRUCTURE OF OIL-FREE ROTARY COMPRESSOR - A rotor shaft sealing method for an oil-free rotary compressor is provided, with which occurrence of lubrication oil intrusion into the compression chamber of the compressor which is liable to occur when negative pressure is produced in the compression chamber, is prevented. With a rotor shaft sealing structure composed such that two shaft seal means ( | 10-02-2008 |
| 20090081063 | Rotary fluid-displacement assembly - A rotary fluid-displacement assembly having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation. | 03-26-2009 |
| 20080260562 | Water-Injected Screw Compressor Element - Improved water-injected screw compressor element which mainly consists of a housing ( | 10-23-2008 |
| 20100150763 | Rotary Pump - A rotary pump device includes a stator chamber with a cylindrical inner wall having intake and exhaust ports therein, and a two-part, expanding rotor eccentrically mounted for rotation within the chamber. The rotor comprises two crescentoid bodies with end surfaces in sliding, mating contact. A spring rod is placed between the inner rotor body surfaces to maintain rotor contact points in continuous wiping contact with the chamber wall. A full intake/exhaust cycle occurs every 180° of rotor travel. | 06-17-2010 |
| 20100178189 | ROTARY EXPANDING OR COMPRESSING MECHANISM PROVIDED IN FLUID CHANNEL WITH BLADES FOR TRAVERSING SHAFT - This invention will involve in the technologies of fluid expanding or compressing on fluid channel, which belongs to the form of volume, and it has particularly decisive meaning on the reliability of the outstanding performance of bias cylinder rotary expansion or compressed mechanism with blades for traversing shaft. This mechanism is originally invented by me, but due to the rotational and technological factors, the reliability is not strong and the profit is not great, so I hereby make this invention. Because this configuration mechanism is very strong, and it seems similar, but in fact, there is a big difference between the features of this invention and the original invention. This invention includes a supporting frame, an import and export of the fluid channel, an un-round type curve barrel stator, a rotor with concave grooves, blades for traversing shaft, a round end cover, a member for transmitting force, and its features are movable wearable closed mechanisms whose outer surfaces and edges are constituted by arc lines whose the matching place between the blades for traversing shaft and the curve barrel stator, etc., so its name is changed as rotary expansion or compressed mechanism with blades for traversing shaft. Thus, this mechanism can go from the basic theory to industrial implementation to achieve the goal of energy conservation. | 07-15-2010 |
| 20120141315 | External Gear Pump - An external gear pump capable of achieving both a sealing property and a sliding property is disclosed. The external gear pump includes a pair of rotating shafts that are respectively pivotally supported by bearings provided in a casing; at least a pair of gears that are respectively fixed to the pair of rotating shafts and are externally meshed with each other; a side plate that is provided in sliding contact with one side surfaces of the pair of gears; and a seal block integrally including a side surface sliding part and a tooth tip sliding part. The external gear pump further includes movement restrictors on both sides of a straight line connecting axes of the pair of gears, and the movement restrictors restrict the seal block from moving with respect to the casing on a plane orthogonal to the rotating shafts. | 06-07-2012 |
| 20080253915 | Self-Aligning Rotary Pistone Machine - A rotary piston machine comprising a cylinder ( | 10-16-2008 |
| 20090081064 | Rotary compressor - A rotary compressor having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially about and between a first position, in which a distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor. The distal end of the gate being constrained to be spaced proximate from the inner wall surface of the housing as the rotor rotates about the rotor axis of rotation. | 03-26-2009 |
| 20130011290 | ROTARY COMPRESSOR - A rotary compressor includes a cylinder having an annular cylinder space, a piston eccentrically disposed relative to the cylinder, and a drive shaft ( | 01-10-2013 |
| 418143000 | On working member circumferential periphery | 2 |
| 20080240966 | HYDRAULIC MACHINE - The invention concerns a hydraulic machine ( | 10-02-2008 |
| 20120315175 | Double Internal Gear Pump - A double internal gear pump has two internal gear pumps having a common pump shaft. A partition is formed between the two internal gear pumps, and the partition has a frustoconical circumferential surface which contacts an opposing surface in a sealing manner in a pump housing. Pump inlets and pump outlets can be led through the partition. The frustoconical circumferential surface of the partition is advantageous because it removes the necessity of pressing into the pump housing and canting the partition. In addition, a seal on the circumference of the partition is ensured with great reliability. | 12-13-2012 |
| 418144000 | Between adjacent cylinder and working member sides | 4 |
| 20090297383 | OIL ROTARY VACUUM PUMP AND MANUFACTURING METHOD THEREOF - An oil rotary vacuum pump of mechanical type is filled with a requested amount of oil at the end of the manufacturing process, then it is stored and then shipped to the user, letting the user to avoid an operation of introducing the proper amount of oil into the pump. The oil leakage is prevented by securing the suction and/or exhaust ports of the pump, which are sealed by means of a removable sealing member, for instance by means of a membrane. | 12-03-2009 |
| 20120034123 | HIGH EFFICIENCY FIXED DISPLACEMENT VANE PUMP - A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque converter hub or disposed on and about the axis of the transmission input shaft and driven at engine speed. The vane pump includes a pair of port plates which reside on the end faces of a pump body having a cylindrical chamber which receives an eccentrically disposed rotor that is coupled to a stub shaft. The rotor includes two halves that define a central chamber. The rotor also includes a plurality of radial slots which receive a like plurality of vanes. The outer ends of the vanes are in contact with the wall of the cylindrical chamber and the inner ends are in contact with a single vane ring received within the central chamber. | 02-09-2012 |
| 20110103992 | GEAR PUMPS AND METHODS FOR USING GEAR PUMPS - Gear pumps and methods of using the gear pumps are provided. In general embodiments, the pumps comprise a gear housing defining a passage and having an inlet and an outlet and one or more gears contained within the gear housing. The gears can comprise corresponding bearings that are movably engaged with the gear. The bearings are separated from the passage of the gear housing by one or more seals. The bearings can be contained within a bearing housing attached to the gear housing. | 05-05-2011 |
| 20120219445 | SEAL RETAINING SLEEVE FOR GEAR PUMP - A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder along a shaft axis. A seal retaining sleeve is defined around the shaft axis to position a shaft seal. A retainer plate at least partially between the first radial shoulder and the second radial shoulder is adjacent to the seal retaining sleeve to position and provide access to the seal retaining sleeve and shaft seal. | 08-30-2012 |
| 418145000 | Seal element between vane and cylinder | 4 |
| 20090028738 | Rotor - A rotor for rotary engines and compressors is disclosed. The rotor of the present invention includes a first body unit ( | 01-29-2009 |
| 20110165007 | ROTARY ENGINE VANE HEAD METHOD AND APPARATUS - A rotary machine is described with a vane carried by a rotor in a housing. The vane includes: a central vane axis extending radially outward along a y-axis from a center of the rotor through the vane to the housing. A centrifugal force of the vane against the housing is primarily distributed with a first sealing element mounted on an end of the vane, such as a rotatable element supported by a rigid support. The rigid structure of the first sealing element facilitates use of a second flexible sealing element mounted on the vane end. The second flexible sealing element performs as a sliding seal between a trailing expansion chamber and a leading expansion chamber on opposite sides of the vane. The rigid seal and the flexible sliding seal typically function independently of each other as separate constituents of the tip or end of a given vane. | 07-07-2011 |
| 20110217200 | Vacuum pump - The invention relates to a vacuum pump, in particular a vane cell pump, having a housing in which a suction space is provided, and a housing passage opening into the suction space, wherein a suction non-return valve opening to the outside or into an external vacuum space is arranged in the housing passage, said valve being accommodated in a pot-shaped housing, the pot-shaped housing having a housing bottom and a housing jacket, wherein the housing bottom is integral with the housing jacket. | 09-08-2011 |
| 418146000 | On vane side | 1 |
| 20130022487 | VANE PUMP - The invention relates to a vane pump comprising a pump housing that has a sleeve-shaped housing body, a bottom, and a cover, with the bottom and cover axially closing the housing body. The vane pump also has a rotor, which lies eccentrically in the housing body and which is rotatably mounted in the bottom and the cover, and one or more vanes which are movably mounted in the rotor in an axial direction. Each vane has bearing pins on the axial end faces thereof, with the bearing pins engaging in the bottom and the cover. | 01-24-2013 |
