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Motors: expansible chamber type

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Class / Patent application numberDescriptionNumber of patent applications / Date published
091418000 WITH MOTIVE FLUID VALVE 88
091472000 THREE OR MORE CYLINDERS ARRANGED IN PARALLEL RADIAL OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS 58
091358000 WORKING MEMBER POSITION FEEDBACK TO MOTIVE FLUID CONTROL 57
091508000 PLURAL RELATIVELY MOVABLE OR RIGIDLY INTERCONNECTED WORKING MEMBERS 19
091392000 WORKING MEMBER POSITION RESPONSIVE MOTIVE FLUID CONTROL 17
091218000 CYCLICALLY OPERABLE 12
091055000 COMBINED 9
091001000 WITH SIGNAL, INDICATOR OR INSPECTION MEANS 8
091165000 APPLICATION OF MOTIVE FLUID AT DIFFERENT PRESSURES TO OPPOSED WORKING MEMBER FACES 7
091041000 WITH CORRELATED CONTROL OF MOTIVE FLUID AND LOCKING MEANS 7
091170000 RELATIVELY MOVABLE WORKING MEMBERS WITH ONE HAVING MOTIVE FLUID CONTROLLED BY, MOVABLY INTERCONNECTED WITH OR MOVED BY ANOTHER 5
20120260794PASSIVE PISTON UNIT - A piston unit is disclosed that utilises an elastic volume to store and release energy with each stroke by varying the hydraulic fluid volumes in and out of the hydraulic unit.10-18-2012
20120073430Variable Displacement Compressor - Disclosed is a variable displacement compressor having improved compressor performance such as reduced pulsation and improved durability and resistance to pressure and allowing smooth and high-precision control of a swash plate tilt angle at a target tilt angle by using an axial movement member. The variable displacement compressor is provided with a cylinder head in which a suction chamber and a discharge chamber are formed, a cylinder block having a cylinder bore into which a piston is inserted at a condition capable of being reciprocated, a crank chamber formed by the cylinder block and a front housing, a swash plate which is disposed in the crank chamber and which is rotated with a main shaft and is supported so that the tilt angle thereof can be changed relative to the main shaft, and a movement conversion mechanism for converting the rotational movement of the swash plate to the reciprocating movement of the piston, wherein: a suction path for intake of a suction gas into the compressor is formed so as to open into the crank chamber; a communication path for communicating the crank chamber and the suction chamber is provided in the cylinder block; around the main shaft, an axial movement member is provided that can move in a direction along the axis of the main shaft in an essentially one to one correspondence with the tilt angle of the swash plate; the axial movement member is disposed such that one end is applied with the pressure in the crank chamber, and the other end is applied with an intermediate pressure between the pressure in the discharge chamber and the pressure in the suction chamber; and an intermediate pressure control mechanism which can control the intermediate pressure is also provided.03-29-2012
20130180395Oil-Pressure Apparatus - An oil-pressure apparatus is provided with an actuating cylinder that works on the outside and an acceleration cylinder that does not work on the outside. When a rod of the actuating cylinder is extended with no load applied to the actuating cylinder, oil is supplied to the actuating cylinder through the acceleration cylinder so that extension of the rod is accelerated. When the rod of the actuating cylinder is extended with load applied to the actuating cylinder, oil is adjusted to the actuating cylinder without passing through the acceleration cylinder so that original thrust of the actuating cylinder is exerted.07-18-2013
20130133511FLUID ROTARY MACHINE - A fluid rotary machine with a decreased footprint and a reduction in the number of parts. The fluid rotary machine has four heads wherein double-headed pistons are disposed inside cylinders in a crisscross arrangement. The rotational balance between rotational parts including the double-headed pistons is achieved only by first and second balance weights which are inserted and incorporated into both ends of a crank shaft coupled eccentrically to a shaft. The shaft is rotated for the double-headed pistons to linearly reciprocate in the cylinders. The fluid rotary machine has rotary valves for switching between the suction and discharge operations of the fluid for each cylinder chamber. The rotary valves are incorporated into a case to be coaxial and integrally rotatable with the shaft.05-30-2013
20080250917Hydraulic Lift Structure - An object of the invention is to propose a hydraulic lift structure which prevents a malfunction of a hydraulic cylinder or the like and improves a supplying and discharging efficiency of a working fluid. In a hydraulic lift structure formed by arranging a hydraulic cylinder case internally provided with a hydraulic cylinder for moving up and down a working machine (a rotary power tiller) in an upper portion of a transmission case of a working vehicle, an oil reservoir of a working fluid for the hydraulic cylinder is provided in a boundary portion between the transmission case and the hydraulic cylinder case in such a manner as to be isolated from an inner portion of the transmission case.10-16-2008
091006000 FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER 4
20130213212FLUID WORKING MACHINE VALVE ACTUATION - A fluid working machine has at least one working chamber of cyclically varying volume and low and high pressure valves to regulate the flow of working fluid into and out of the working chamber, from low and high pressure manifolds. The low and high pressure valves are actuated by electronically controlled valve actuation means which, when actuated, applies forces to the low and high pressure valve members to open and/or close the respective valves. The low and high pressure valve members are independently moveable and, although the low pressure valve member typically begins to move quickly in response to a shared valve control signal, the high pressure valve member typically moves only after a change in the pressure within the working chamber. The electronically controlled valve actuation means may be a shared electronically controlled valve actuator, such as a solenoid within a magnetic circuit which directs magnetic flux through both low pressure and high pressure valve armatures which are connected to the respective valve members.08-22-2013
20110048222PISTON ACTUATOR ASSEMBLY - A piston actuator assembly having includes a piston liner slidably disposed within a housing. A piston is slidably disposed within the piston liner and partially slidably disposed in the valve body. A plurality of pressurized fluid passages communicate with the piston actuator assembly and provide a first flow of hydraulic fluid and a second flow of hydraulic fluid. A plurality of seals maintains separate fluid pressure chambers selectively pressurized to achieve a plurality of actuator positions. A plurality of exhaust passages communicate with the piston actuator assembly providing pressure relief to allow for predictive movement of the piston and piston liner.03-03-2011
20120036991Automatic pneumatic valve reset system - A cup for an air valve assembly in a positive displacement pneumatic motor includes a cup body, a gas cavity, and a first pilot slot. The cup body is rectilinear and has a sliding face as one side, and the gas cavity is concave and extends into the cup body through the sliding face and terminates within the cup body. The first pilot slot extends from the gas cavity and into the cup body through the sliding face and terminates within the cup body.02-16-2012
20090165638Automatic transmission servo - A servo for hydraulically operating a brake band of an automatic transmission includes a housing having a bore engaging portion for engaging an existing servo bore in a case of the automatic transmission and an external portion for positioning externally of the servo bore, the external portion of the housing including an interior bore. The servo also includes a piston disposed in the interior bore of the external portion of the housing for reciprocating movement, the piston being externally remote from the servo bore and having an outer diameter greater than an outer diameter of the servo bore. An actuator rod for engaging and operating the brake band of the automatic transmission is attached to the piston to reciprocate with the piston. The servo connects to existing hydraulic circuits within the servo bore to supply pressurized fluid for operating the servo.07-02-2009
091471000 MISCELLANEOUS (E.G., METHODS, ETC.) 4
20090255399PNEUMATIC MOTOR - A pneumatic motor includes a cylinder, a rotor and a drive shaft. The cylinder includes a cylinder body having two ends, a first cover and a second cover. The first cover is mounted on one of the ends of the cylinder body and has a first bearing housing, a first bearing and a first blocking ring. The first bearing is mounted in the first bearing housing and has an annular clearance. The first blocking ring is mounted between the first bearing housing and the first bearing and covers the annular clearance of the first bearing. The rotor is mounted rotatably in the cylinder body. The drive shaft is mounted securely through the rotor. When compressed air is expelled from the cylinder body, the compressed air does not blow lubricants out of the first bearing because the first blocking ring closes the annular clearance.10-15-2009
20080216645Fluid control system having selective recruitable actuators - A fluid control or actuation system providing selective recruiting of actuators antagonistic to one another to provide variable output power, such as that used to drive a load. The actuators are intended to comprise different sizes, and to be operable with one or more pressure control valves capable of providing displacement of a non-recruited actuator without requiring active input to cause such displacement. Being able to selectively recruit different sized actuators to drive the load, and being able to displace non-recruited without active input, effectively incorporates a gearing function into the fluid control system.09-11-2008
20120090458Gas Strut Separation For Staged Rocket - A staged rocket apparatus includes first and second stages connected by a releasable connector. A plurality of pressurized gas struts are connected between the first and second stages and provide a separating force urging the first and second stages apart. The gas struts are held in a telescopingly collapsed first position by the releasable connector. The separating force is maintained at a minimum value so long as the releasable connector holds the struts in their first position. When the releasable connector is disconnected the separating force increases due to gas flow through a metering passage having a progressively increasing flow area from a high pressure chamber to a low pressure chamber.04-19-2012
20110048224HYDRAULIC PUMP OR HYDRAULIC MOTOR HAVING A ROTATION SPEED SENSOR - The invention relates to a hydraulic pump or hydraulic motor having an orbiting cardan shaft. The hydraulic pump or motor includes a housing having an end cover and a port plate. The cardan shaft is mounted in the housing and extends through the port plate. A rotation speed sensor is fixed to the port plate and includes a sensor probe obtaining its signal from the orbiting cardan shaft. A piston may be in contact with the cardan shaft and moving forward and back due to the orbital motion of the cardan shaft. The sensor probe then obtains its signal from the movement of the piston.03-03-2011
091005000 WORKING MEMBER MOVED BY STORED MOTIVE FLUID CHARGE 3
20110214562CYLINDER DRIVING APPARATUS USING AIR PRESSURE - It is an aim of the present invention to overcome urgent and pressing global troubles directly associated with the human right to live, such as the energy crisis, the economic crisis, and environmental pollution and the like which cannot be delayed or neglected any longer in order to meet the needs of the times. Further, it is an aim of the present invention to significantly reduce the dependency on a variety of fossil directly associated with global warming. Therefore, the present invention provides a cylinder driving apparatus using air pressure, with maximized energy, characterized in that the use of fossil fuel energy is reduced and the use of clean energy is proposed. The present invention relates to a cylinder diving apparatus in which a plurality of flexible tubes connected to a crankshaft are filled with high pressure air, alternately expand by expansion energy, and are elevated to operate and rotate the crankshaft. Further, the preset invention relates to an apparatus for minimizing friction and eliminating gravitational force which may interfere with the elevating movement, to thereby maximize the efficiency of the conversion of compressed air expansion energy into rotating movement. The present invention achieves a great and active supplement and improvement over Korean Patent Registration No. 0041791 and No. 0210368 granted to the applicant of the present invention, ad proposes an inventive structure of an assistant tube that provides a novel energy source. Conventional apparatus use a variety of fossil fuels as a power source, whereas the present invention eliminates the repeated rise of oil prices ad ends energy problems, enables people to enjoy a stable life and aids in economic development, and provides all mankind with a new environmentally-friendly energy resource to take the place of the innumerable conventional power sources. The cylinder driving apparatus using air pressure according to the present invention comprises: a plurality of flexible tubes arranged in a case to flexibly move via high-pressure air; a connecting rod fixed at each f the flexible tubes, and which penetrates through an upper portion of the case; a crank shaft sequentially coupled to the connecting rod to rotate via the elevating movement of the connecting rod; a high pressure tank for supplying high pressure air to the flexible tubes via an air line; and a valve arranged in each of the flexible tubes to divide the space in the flexible tube into an upper section and a lower section and to open/shut airflow in the upper and lower sections. The valve is shut to block the upper and lower sections from each other when the flexible tubes are filled with high pressure air, and opens when the flexible tubes are elevated to top center. The valve is connected to an assistant tube, the interior of which is equipped with a tensile spring force to keep the assistant tube compressed, to enable compressed air in the flexible tubes to flow to the assistant tube when the valve opens.09-08-2011
20120118137COMPRESSED 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.05-17-2012
20130019743PNEUMATIC ACTUATOR - A pneumatic actuator is provided for an active hood and includes a cylinder and a piston, which is movable in the cylinder between a lower terminal position, in which the volume of a chamber delimited by piston and cylinder, which may be impinged using compressed gas, is minimal, and an upper terminal position, in which the volume of the chamber is maximal. The piston is lockable in the lower terminal position by a detent body engaging in first recesses of the cylinder and the piston. A slider is displaceable by impingement using the compressed gas out of an idle position, in which it fixes the detent body in the first recesses, into a triggering position, in which a second recess of the slider overlaps with one of the first recesses and is capable, together with a single one of the first recesses of accommodating the detent body.01-24-2013
091004000 HYDRO-PNEUMATIC 3
20110174151PNEUMATIC BRAKE BOOSTER - A tandem-type pneumatic brake booster, in particular for hydraulic vehicle brake systems, having a housing comprising a first and a second housing half shell, the interior of which is divided with the aid of a partition into a front and a rear booster chamber, wherein the partition has a centrally arranged, circular cavity, through which a control housing or a cylindrical control housing extension extends, and the partition rests sealingly against the control housing or the control housing extension by a sealing element, having a first and a second movable wall, which respectively subdivide the front and the rear booster chamber into a first low-pressure chamber and a first working chamber and into a second low-pressure chamber and a second working chamber, having at least one connecting conduit between the first working chamber and the second working chamber in order to equalize the pressure between said two working chambers.07-21-2011
20090038470HYDRO-PNEUMATIC PRESSURE TRANSFORMATION DEVICE AND METHOD FOR OPERATION - Proposed is a hydro-pneumatic pressure transformation device with a working piston (02-12-2009
20120097021BOOTSTRAP ACCUMULATOR SYSTEM WITH TELESCOPING ACTUATOR CYLINDER - A bootstrap accumulator system includes an actuator cylinder that drives an accumulator piston through a multiple of nested actuator sleeves, comprising a multistage actuator cylinder.04-26-2012
091415000 DIFFERENTIAL 2
20110005385TWO PORT - THREE POSITION ACTUATOR - An hydraulic actuator with a housing having two ports (A, C) that selectively receive pressured fluid to move a piston (01-13-2011
20100269685HYDRAULIC MACHINE, IN PARTICULAR HYDRAULIC MOTOR, WITH A RECIPROCATING MOVEMENT, AND DIFFERENTIAL PISTON FOR SUCH A MACHINE - Hydraulic machine, in particular hydraulic motor, comprising a casing, a differential piston (10-28-2010
091169000 SINGLE CHAMBER FORMED BY MUTUALLY RELATIVELY MOVABLE CYLINDER, SLEEVE AND PISTON 2
20090165640Booster pump and low-temperature-fluid storage tank having the same - A low-temperature-fluid storage tank capable of efficiently increasing the pressure of fluid without heating the fluid is provided. There is provided a booster pump which includes a piston having a piston head and a piston rod and a cylinder having a compression chamber that accommodates the piston head so that a fluid is compressed by one end surface of the piston head. The piston head is provided with a bellows for separating a space adjacent to the piston rod from a space adjacent to the cylinder in the compression chamber.07-02-2009
20120279386HYDRAULIC SUPPORT ELEMENT - A hydraulic support element having a housing, a pressure piston, a high pressure chamber for a hydraulic means extending between a bottom face of the pressure piston and a bottom of the housing, wherein the housing includes a passage for the hydraulic means, which communicates radially inwardly with an aperture in the pressure piston, wherein the pressure piston includes a deflecting sheath for the hydraulic means, tightly contacting the pressure piston at the interior jacket axially below the aperture and extending to the proximity of a head of the pressure piston, wherein a rising line for the hydraulic means is formed between the deflecting sheath and the interior jacket, which starts at the aperture and leads in the area of the head into a reservoir inside the deflecting sheath directly in front of the return valve and with the deflecting sheath having at least one perforation axially above its contact.11-08-2012
091047000 CONSTANTLY APPLIED MOTIVE FLUID WITH CONTROLLED VENTING 2
20110030547FLUID DRIVEN RECIPROCATING LINEAR MOTOR - A reciprocating linear motor powered by one directional fluid flow is provided, having small external diameter, optimized for length, with few moving parts and effective seals, low mass and thus low inertia in direction changes. The motor provides reciprocating linear powered motion for use by attached equipment such as a pump, chisel, hammer, valve, or other machine requiring such power.02-10-2011
20090165639ACTUATOR AND METHOD FOR PRODUCING MECHANICAL MOTION - A system for producing mechanical motion is provided. The system includes an actuator having a first end, a second end, and a radially expandable bladder assembly extending therebetween, and a source of pressurized fluid external to said actuator. The bladder assembly further includes an inner cavity. In addition, a substantially fixed-volume reservoir positioned within the cavity is provided, wherein the bladder assembly is configured to expand in a radial direction and contract in an axial direction when a volume of fluid is introduced from the reservoir into the inner cavity.07-02-2009
091061000 ROTARY AND RECIPROCATING WORKING MEMBERS 2
20090260514Apparatus for Compensating and/or Transmitting Forces or Torques and Rotational Movements Between Two Components - An apparatus for compensating and/or transmitting forces/torques and rotational movements between two components, particularly for compensating for vehicle movements, in which at least one joint module is situated between the two components, which joint module converts a translational and/or rotational movement of a piston, to which a pressure medium is applied, into a rotational movement of at least one first rotatable shaft or of a first and a second rotatable shaft.10-22-2009
20090272255Vibrator - A linear vibrator having an internal cylindrical bearing surface forming a chamber therein and a fluid inlet to direct a fluid into the chamber with a one piece piston slideable located therein with the piston simultaneously rotatable and axially displaceable therein with the piston including a static port to bias the piston and thereby induce piston oscillation when fluid is introduced into the vibrator.11-05-2009
091152000 MULTIPLE EXPANSION 2
20110232474TWO-STAGE SUBMERSIBLE ACTUATORS - The present invention provides an improved two-stage actuator (09-29-2011
20110214563FREE-PISTON COMPRESSED-GAS ENGINE VARIANT AND ENGINE PINION WITH SEVERAL DECOMPRESSION STAGES AND RETURN SPRINGS - The present utility model is a free-piston engine comprising pinions, with various stages, providing excellent efficiency and control.09-08-2011
091355000 CUTOFF AFTER SINGLE COMPLETE CYCLE 1
20110011256HOOD-LIFTING ACTUATOR WITH DISARMABLE RETURN BRAKING ARRANGEMENT - The triggered stroke actuator comprises a cylinder (01-20-2011
091052000 CONSTANTLY OPEN THROTTLED EXHAUST WITH CONTROLLED MOTIVE FLUID SUPPLY 1
20120031262HYDRAULIC CYLINDER - A hydraulic cylinder includes a piston that defines a driving pressure chamber and a cushion pressure chamber within a cylinder tube, an air chamber defined inside a hollow piston rod, an orifice that leads a working fluid in the cushion pressure chamber into the air chamber when the cushion pressure chamber contracts during an extension operation, a check valve that returns a working fluid in the air chamber to the driving pressure chamber when a differential pressure between the air chamber and the driving pressure chamber rises to or above a predetermined value, and a valve housing that houses the check valve. A throttle gap is defined between an outer peripheral surface of the valve housing and an inner peripheral surface of the piston rod, and a working fluid ejected from the orifice during the extension operation flows into the air chamber through the throttle gap.02-09-2012
091357000 SELECTIVELY USABLE OR POSITIONABLE WORKING MEMBER CONTROLLED VENT IN CHAMBER WALL (402) 1
20110239855SINGLE EFFECT HYDRAULIC CYLINDER - The invention belongs to the field of single-effect hydraulic cylinders. It relates to a device that makes it possible to limit the pressure in the pressurization chamber of a single-effect cylinder when the rod thereof is in a particular range of longitudinal positions of safety, while respecting the operating safety of the device, that is, in the case that the power supply of the pilot valves of the distributors and of the hydraulic pump is cut, the rod of the cylinder remains in its position if this position does not lie within the safety position range10-06-2011
091054000 CONVERTIBLE; OR CHANGEABLE BY DISASSEMBLY OR ASSEMBLY 1
20120167758Vacuum motor airflow series/parallel switching apparatus - An apparatus for transitioning at least a first vacuum motor and a second vacuum motor between an air series configuration and an air parallel configuration is provided. The apparatus comprises a controllable switching valve, a first check valve, a second check valve and a plurality of chambers. The switching valve is positioned in communication with the first vacuum motor air outlet and the second vacuum air inlet. The apparatus is configured so that when the switching valve is opened the vacuum motors are configured air series and when the switching valve is closed the vacuum motors are configured air parallel. The first and the second check valves are opened or closed by pressure differential between chambers.07-05-2012
091059000 TORQUE RESPONSIVE MOTIVE FLUID CONTROL 1
20110259187DIGITAL HYDRAULIC SYSTEM - A method and a pressurized medium system, including: at least one actuator to generate sum forces effective on a load; a working chamber operating by displacement and located in the actuator; a charging circuit of a higher pressure, which is a source of hydraulic power; a charging circuit of a lower pressure, which is a source of hydraulic power; a control circuit, that couples the charging circuit of higher pressure and the charging circuit of lower pressure, in turn, to the working chamber; wherein the working chamber is capable of generating force components that correspond to the pressure of the charging circuit to be coupled to the working chamber, and each force component produces at least one of the sum forces either alone or in combination with the force components produced by the other working chambers of the actuator.10-27-2011
091196000 MOVING CYLINDER 1
20080216641Motor Fluid Drive, Especially for Rotary, Pivotal or Linear Drive Units and Corresponding Method - The invention relates to a drive, especially for rotary, pivotal or linear drive units, comprising a working piston (09-11-2008

Patent applications in all subclasses Motors: expansible chamber type