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18results about "Oscillating piston engines" patented technology
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Prevention of unpowered reverse rotation in compressors
InactiveUS20060222510A1prevent reversalrule out the possibilityFluid parameterOscillating piston enginesDrive motorAir conditioning
The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.
Owner:CARRIER CORP
Cycloid motor and braking method thereof
The present invention discloses a cycloid motor and a braking method thereof. The cycloid motor comprises: a motor assembly, a brake housing, one end of the brake housing being connected to the motor assembly; an output shaft, the output shaft being connected to the other end of the brake housing and one end of the output shaft being located within the brake housing; a linkage shaft, the linkage shaft being located within the output shaft, one end of the linkage shaft being connected to the motor assembly and the other end of the linkage shaft being connected to the output shaft; a brake assembly, the brake assembly being located within the brake housing and sleeved on the output shaft; an elastic member, the elastic member being installed within the brake housing and being located on one side of the brake assembly; and a piston, the piston being installed within the brake housing and being located on the other side of the brake assembly. The present invention arranges the elastic member and the piston on both sides of the brake assembly, respectively. While achieving a braking function, it can also significantly reduce wear on the piston and increase the service life of the cycloid motor.
Owner:JIANGSU HENGLI HYDRAULIC TECH CO LTD
Rotary piston compressor with medium-pressure inlet
Oscillating piston compressor (1) with medium pressure inlet (2), comprising in a housing (4) a cylinder (5) with a oscillating piston (3), wherein the oscillating piston (3) is rotatably mounted on an eccentric (6) of a drive shaft (7) and comprises a separating slide (8) rigidly connected to the oscillating piston (3), a pivot bushing (9) rotatably mounted in the housing (4) for linear guidance of the separating slide (8) in a separating slide guide (10), a low-pressure inlet (11) which is operatively connected to an inlet chamber (5a) in the cylinder (5), a medium pressure inlet (2) which is operatively connected to an outlet chamber (5b) in the cylinder (5), wherein the medium pressure inlet (2) comprises a first section (2a) with a check valve (13) in the housing (4), a second section (2b) in the oscillating bushing (9) and a third section (2c) in the separating slide (8), and a high-pressure outlet (12) which is operatively connected to the outlet chamber (5b) in the cylinder (5).
Owner:IAV INGGES AUTO & VERKEHR
Self-cooled rotary engine and pump
ActiveUS12624656B1Oscillating piston enginesInternal combustion piston enginesRotary engineInternal combustion engine
A rotary combustion engine includes a cylindrical housing with a plurality of internal cavities. Each of the internal cavities is a cylindrical segment of the housing, and a plurality of stationary blades are attached to its inner wall. The stationary blades extend inward to ride along the surface of a central shaft, contacting the shaft with a seal. Each cavity contains a rotor blade attached to the shaft and configured to drive the shaft. Each rotor blade extends outwardly to an inner curve of the housing with a sealing means. Each of the plurality of rotor blades has a reciprocating circular motion inside each of the cavities along the shaft between each of the stationary blades, thereby generating rotational power, delivering compressed rotational force, and provides cooling for the cavity.
Owner:AHDOOT NED M
Drive mechanism and massager
A drive mechanism for a massager, comprising a drive motor, a transmission unit, a limit bracket, and a plurality of movable push blocks; wherein each movable push block comprises a movement slot and a push section; wherein the transmission unit comprises a plurality of eccentric joints, each eccentric joint comprising a connecting portion and an eccentric portion, the connecting portion being configured to connect adjacent eccentric joints to each other, and the eccentric portion abutting the movement slot; wherein a rotation shaft of the drive motor is defined as the first rotation axis; wherein a point of the eccentric section furthest from the first axis of rotation is defined as the furthest eccentric end, and a connecting line between adjacent furthest eccentric ends forms a non-zero first included angle with the first axis of rotation; wherein the limit bracket is slidably connected to the movable push blocks, and the sliding movement direction of the movable push blocks is parallel to the width direction of the movement slot.
Owner:LONGNAN PINXIN MOTOR CO LTD
Hydraulic device and construction machine with an hydraulic motor
Owner:NABTESCO CORP
Maintenance-friendly wobble plate pump
ActiveDE602015091881T2Oscillating piston pumpsOscillating piston engines
Owner:PUMPSYST GMBH
Rotary piston compressor with medium-pressure inlet
ActiveDE102024112048A1Oscillating piston enginesRotary piston pumpsRefrigerantMechanical engineering
The invention provides an advantageous oscillating piston compressor with an improved intermediate pressure inlet, with which refrigerant can be compressed in a refrigerant circuit. In an advantageous manner according to the invention, the intermediate pressure inlet is provided by means of an inlet channel which extends from the housing of the oscillating piston compressor through the oscillating bushing and through the separating slide of the oscillating piston and comprises three successively interconnected intermediate pressure inlet channel sections. For this purpose, a first section of the intermediate pressure inlet channel is located in the housing of the oscillating piston compressor, a second section of the intermediate pressure inlet channel is located in the oscillating bushing, and a third section of the intermediate pressure inlet channel is located in the separating slide of the oscillating piston, with the third intermediate pressure inlet channel opening into the compression chamber.
Owner:IAV INGGES AUTO & VERKEHR
A hydraulic swing motor for driving the rotation of an aircraft control surface
The present invention provides a hydraulic swing motor for driving the rotation of an aircraft rudder surface, which relates to the technical field of aircraft components; it includes a housing and a motor shaft. At least two fixed vanes are provided on the inner wall surface of the housing. Moving vanes are provided on the outer periphery of the motor shaft and are respectively located between adjacent fixed vanes. The moving vanes divide the fixed cavity between adjacent fixed vanes into a first oil cavity and a second oil cavity, and the first oil cavities and the second oil cavities are alternately arranged. A first through hole communicating with each first oil cavity and a second through hole communicating with each second oil cavity are constructed on the motor shaft. When there is a pressure difference between the first oil cavity and the second oil cavity to cause the motor shaft to rotate, the rotation of the motor shaft includes a first stroke in which the first through hole and the second through hole are kept open, and a second stroke in which the outer side surfaces of the corresponding fixed vanes gradually block the first through hole and the second through hole. The hydraulic swing motor for driving the rotation of the aircraft rudder surface of the present invention can reduce the impact on the moving vanes and the fixed vanes.
Owner:北京航辰机载智能系统科技有限公司 +1
Hydraulic device, hydraulic motor and construction machine
A hydraulic device includes: a first block having internal teeth; a second block configured to rotate relative to the first block; an oscillatory rotating body having external teeth smaller in number than the internal teeth, being provided inside the first block such that it is oscillatorily rotatable, and having an inner circumferential portion; a rotation restricting shaft extending from the inner circumferential portion of the oscillatory rotating body in a direction intersecting a radial direction and coupling the oscillatory rotating body and the second block such that they are not allowed to rotate relative to each other while allowing the oscillatory rotating body to oscillatorily rotate; a first friction plate configured to rotate together with the oscillatory rotating body; a second friction plate restricted from rotating by the second or first block; and a press mechanism configured to press the first and second friction plates against each other.
Owner:COMTESCO CORP
An oscillating-vane type motor
PCT designated stageWO2026005744A3Oscillating piston enginesPump componentsTorque transmissionPhysics
The present invention comprises at least one shaft (2) rotatably disposed about the axis along which it extends, a first disk (3) disposed on the shaft (2) and enabling it to rotate, a second disk (4) disposed on the shaft (2) and enabling it to generate torque, at least one first torque transmitting bearing (5) disposed between the first disk (3) and the second disk (4) and transmitting torque by means of movement of the second disk (4) rotating about its axis to the shaft (2) in a direction predetermined by the manufacturer, the second bearing (6), located between the first bearing (5) and the second disk (4) so as to rotate around its axis by means of the movement of the second disk (4) so as to transmit torque in a direction opposite to the direction of rotational torque transmission of the first bearing (5), relates to a fluid (L), which is a liquid and / or a gas and / or a mixture of liquid and gas, to a channel group (7) into which the fluid (L) is filled and which allows the shaft (2) to be rotated.
Owner:TUSAS TURK HAVACILIK VE UZAY SANAYII ANONIM SIRKETI
A four-stroke, spark-ignition, petrol - hydrogen fuelled toroidal engine with a unidirectional drive system having a double planetary gear set
PCT designated stageWO2026005725A1Internal combustion piston enginesOscillating piston enginesGear wheelGasoline
The present invention relates to a petrol-hydrogen fuelled toroidal engine with four strokes, spark ignition and a special gear transmission system. The invention provides an engine comprising piston counterparts (10) in a toroidal cylinder extending around a shaft (6), a piston carrier ring (11) having movable piston pairs (16) that can move within this cylinder, a unidirectional transmission assembly that transfers the oscillation of the piston pairs (16) to the shaft (6) in the form of a rotational movement in one direction, tabs (17) and tab grooves (17) that engage each other for sealing and bearing the piston carrier ring (11).
Owner:KOCAELI UNIVERSITESI REKTORLUGU
Pivoting drive mechanism for a massage device
ActiveDE202025102033U1Oscillating piston enginesVibration massageRotational axisPhysical medicine and rehabilitation
A pivot drive mechanism for a massager, comprising: a support member, a pivot arm, a transmission member, and a motor; wherein the support element is connected to a first support portion, the first support portion is connected to and supports the pivot arm to form a plurality of support points, the plurality of support points being arranged in a circular array around a rotation axis of the motor, and the pivot arm being rotatable in any direction around the center of the plurality of support points; wherein the transmission element comprises a first transmission section and a second transmission section; wherein the first transmission section is connected to an output shaft of the motor so that the transmission element rotates with the output shaft of the motor; wherein the second transmission section bears against the pivot arm and drives it in the direction of rotation of the motor; Furthermore, the second transmission section rotates relative to the swivel arm; Furthermore, an abutment position between the second transmission section and the pivot arm is configured such that a longitudinal direction of the pivot arm maintains a fixed included angle with the output shaft of the motor.
Owner:LONGNAN PINXIN MOTOR CO LTD
Low-speed large-torque water hydraulic motor suitable for deep sea mechanical arm
The invention discloses a deep sea water hydraulic mechanical arm low-speed large-torque motor which mainly comprises a motor body and a valve flow distribution mechanism, the motor body mainly comprises a crankshaft, a water lubrication bearing assembly, a plunger assembly, a swing cylinder, a shell, a front end cover and a rear end cover, and the valve flow distribution mechanism mainly comprises a valve frame, a valve set, an ejector rod and two cams. The valve frame is used for supporting and protecting internal components, the water-lubricated bearing component realizes full water lubrication when the motor works in a deep sea environment by adopting a bidirectional six-groove structural design, and the valve flow distribution mechanism replaces a traditional low-speed large-torque motor shaft flow distribution or disc flow distribution structure. The problems that a flow distribution mechanism is seriously abraded and short in service life when working for a long time in a marine environment are solved, and the problem that the flow distribution mechanism is prone to failure when driven by a high-pressure water medium is solved. The low-speed large-torque motor of the deep sea water hydraulic mechanical arm has the advantages of being simple in structure, stable in performance, high in power density and high in applicability.
Owner:HUAZHONG UNIV OF SCI & TECH
Swing type piston expander and working method thereof
The invention discloses a swing type piston expander and a working method thereof, and relates to the field of gas pressure energy recovery. The expansion machine adopts a rotary structure that the gas distributor, the swing piston shaft and the expansion machine shell are axially nested, a traditional valve gas distribution mechanism is omitted, and periodic gas inlet and gas outlet are achieved through the rotary gas distribution mechanism. In the working process, high-pressure gas enters the expansion cavity through the gas inlet system capable of adjusting the gas inlet pressure, the swing piston shaft is pushed to do work in a reciprocating swing mode, and gas expansion cooling and pressure energy recycling are synchronously completed; and low-temperature exhaust can adapt to different process requirements by regulating and controlling operation parameters of the expansion machine. The device has the advantages of being simple in structure, wide in application range and the like, refrigeration and pressure energy recovery of high-pressure gas can be achieved under the working conditions of small volume flow and large pressure ratio, and a novel device solution is provided for the field of gas pressure energy recovery.
Owner:DALIAN UNIV OF TECH +1
Rotary pump or motor
PCT designated stageWO2025174757A1Engine of arcuate-engagement typeOscillating piston enginesRotary pumpElectric machine
The methods and systems provide for an improved rotary device where in variable chambers are produced between a rotor and stator(s). The size and shape of the variable chambers are varied by rotating the rotor on a shaft and by sliding the rotor axially along the shaft wherein the rotating and sliding are controlled by a bearing interacting with the rotor and shaft such that the bearing transmits rotation of the shaft to the rotor to thus rotate the rotor and axial movement of the bearing within a defined slot on the shaft results in the rotor axially sliding. The rotating and sliding of the rotor results in changing the size and shape of the variable chambers. For example, introduction of a fluid into a variable chamber occurs when the chamber moves from the closed position to the open position, and expelling the fluid occurs as the variable chamber moves from the open position to the closed position.
Owner:CRE ENGINEERING LLC
A HIGH-PRESSURE, MULTI-ROTATING UNIT WITH BEARING ARRANGEMENT
ActiveDE602016093943T2Oscillating piston pumpsOscillating piston enginesSoftware engineeringHigh pressure
Owner:LOG MAX
Cycloid hydraulic motor rear cover structure integrated with clutch function
The utility model relates to the technical field of hydraulic motors, in particular to a cycloid hydraulic motor rear cover structure integrated with a clutch function, which can ensure the sealing performance of a piston and facilitate the disassembly of the piston, and comprises a rear cover connected with a motor body, a piston cavity is formed in the motor body, a piston is installed in the piston cavity, an annular groove is formed in the outer wall of the piston, a sealing ring is installed in the annular groove, the motor is characterized in that at least two threaded counter bores are formed in the end face of one side, facing the motor body, of the piston, and the sealing ring is a Glyd ring formed by splicing a rubber O-shaped ring and a polytetrafluoroethylene ring.
Owner:IMPRO FLUID TECH (ZHENJIANG) CO LTD