| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418209000 | PLURAL WORKING CHAMBERS | 20 |
| 20090142214 | ROTARY COMPRESSOR - In a compression mechanism of a rotary compressor, a cylinder chamber is defined by a cylinder and a second housing. A back surface side gap is defined between an end plate part of the cylinder and a flat plate part of a first housing. The first housing is provided with a communicating path and a differential pressure regulating valve. When the difference between the suction pressure and the discharge pressure is small, the discharge pressure is introduced through the communicating path to an intermediate gap whereby both an internal gap and the intermediate gap are placed at the same pressure as the discharge pressure. Conversely, when the difference between the discharge pressure and the suction pressure is great, the communicating path is made discontinuous by the differential pressure regulating valve whereby the intermediate gap is placed at an intermediate pressure lower than the discharge pressure. | 06-04-2009 |
| 20090238710 | Multicylindrical rotary compressor, compression system, and freezing device using the compression system - In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which first and second rotary compression elements perform compression works and a second operation mode in which substantially the only first rotary compression element performs the compression work, an object is to reduce generation of collision noises due to collision of the second vane with the second roller at a time when the first operation mode is switched to the second operation mode, and a pressure in a back-pressure chamber of the second vane is discharged on a low-pressure chamber side in a second cylinder in a case where the first operation mode is switched to the second operation mode. | 09-24-2009 |
| 20100158740 | Vane Machine - The invention relates to a vane machine ( | 06-24-2010 |
| 20100233008 | ROTARY FLUID MACHINE - A rotary fluid machine includes a cylinder with an annular cylinder chamber, an annular piston and a blade. The annular piston is disposed in the cylinder chamber so as to be eccentric to the cylinder. The annular piston divides the cylinder chamber into an outer cylinder chamber and an inner cylinder chamber. The blade is arranged in the cylinder chambers to divide each of the outer and inner cylinder chambers into a high-pressure chamber and a low-pressure chamber. The cylinder and the piston are arranged to eccentrically move relative to each other. A height of the outer cylinder chamber is different from a height of the inner cylinder chamber as measured in a direction of a rotational axis of the rotary fluid machine. | 09-16-2010 |
| 20110293460 | VANE PUMP INLET WINDOW SHAPE - A vane pump has an inlet window and a discharge window formed within a cam surface. The vane pump includes a rotor carrying a plurality of radially extending vanes which are biased into contact with the cam surface. The rotor has a direction of rotation such that one end of the inlet window can be described as an upstream end, and an opposed end as a downstream end. The inlet window extends for a relatively long width along a rotational axis of the rotor at the upstream end. Angularly inwardly extending sides reduce an axial width of the inlet window in a direction moving in a downstream direction from the upstream end. | 12-01-2011 |
| 20130017114 | Fluid MachineAANM Nakamura; ShinjiAACI Isesaki-shiAACO JPAAGP Nakamura; Shinji Isesaki-shi JPAANM Wada; HirofumiAACI Isesaki-shiAACO JPAAGP Wada; Hirofumi Isesaki-shi JP - A fluid machine ( | 01-17-2013 |
| 20130039795 | SHAFT ROTATING DOUBLE-STATOR MULTI-SPEED MOTOR WITH CURVES OF CONSTANT WIDTH - The present invention discloses a shaft rotating constant-width curve double-stator multi-speed motor, comprising a rotor ( | 02-14-2013 |
| 20130084202 | VANE ROTARY COMPRESSOR - In a vane rotary compressor, a discharge valve on a discharge flow channel communicates an operating chamber in a compression element with a discharge hole. The discharge valve is pushed from an opening portion of a discharge valve groove to an outer circumferential surface of a roller by a high-pressure refrigerant when pressure in an operating chamber is lower than the pressure of the high-pressure refrigerant. The discharge valve is pushed back into the discharge valve groove by the refrigerant pressure in the operating chamber when the pressure in the operating chamber is higher than the pressure of the high-pressure refrigerant. The discharge flow channel is closed by the outer circumferential surface of the discharge valve pushed out from the opening portion of the discharge valve groove and the outer circumferential surface of the roller, and opens when the discharge valve is pushed back into the discharge valve groove. | 04-04-2013 |
| 20130089456 | Cartridge Style Binary Vane Pump - A binary vane pump is provided. The binary vane pump includes a pressure plate having a first discharge port, a thrust plate having a second discharge port, a ring positioned axially between the pressure plate and thrust plate, the ring having an inner cam surface, and a rotor rotatably disposed within the ring, the rotor having a plurality of slots and a plurality of vanes, vanes of the plurality vanes corresponding to respective slots of the plurality of slots and radially movable with the respective slots. A first and second pump chamber are disposed within the ring, separated by the rotor, vanes, pressure plate and thrust plate, the first pump chamber configured to discharge fluid to the first discharge port and the second pump chamber configured to discharge fluid to the second discharge port. A shaft extends through the pressure plate, thrust plate, ring and rotor and drives the rotor. | 04-11-2013 |
| 20130177466 | ROTARY VANE PUMPS WITH ASYMMETRICAL CHAMBER CAVITIES - Rotary vane pumps include casings having asymmetrical cavities that accommodate a rotor. For a single pump chamber, one portion of the rotor abuts or nearly abuts the inner wall of the cavity at a single location while one portion of the rotor and the inner wall are not in contact with each other thereby defining a pump chamber. For a dual pump chamber embodiment, two diametrically opposed portions of the rotor abut or nearly abut the inner wall of the cavity while two portions of the rotor and inner wall are not in contact with each other thereby defining the two pump chambers. The two pump chambers are disposed on opposite sides of the minor axis of the cavity. The cavities of each pump are skewed so each pump chamber is larger in volume at the inlet end than at the outlet end. | 07-11-2013 |
| 20130259730 | ROTARY PUMP WITH A VANE PROVIDED IN EACH PUMP OUTLET - A pump housing has a cylindrical interior surface having outlets and a pair of side surfaces defining, in combination with the interior surface, a substantially cylindrical chamber. The surfaces have inlets. A rotor has a void, lobes and, for each lobe, a throughpassage. The rotor is positioned in the chamber such that the void communicates with the inlet to receive fluid and the throughpassage for each lobe provides communication between the void and chamber. The rotor is rotatably mounted in the chamber such that the lobes traverse the cylindrical surface. Provided for each outlet is a vane. As the rotor turns, the rotor outer surface is traversed by the vane to create, as the vane traverses a throughpassage, a chamber ahead of the vane which increases in volume and communicates with the throughpassage, and a chamber behind the vane which decreases in volume and communicates with the outlet port. | 10-03-2013 |
| 20130315771 | VANE ROTARY TYPE GAS COMPRESSOR - The present invention provides a vane rotary type gas compressor including a casing, a compressor main body provided within the casing and compressing a coolant sucked by rotary drive, and a drive power transmitter applying a rotary drive power to the compressor main body, and an outer peripheral wall of the casing is provided with a vibration transmission suppressing rib continuously from a mounting portion on a vehicle side, the vibration transmission suppressing rib suppressing vibration transmission caused by the rotary drive of the compressor main body. | 11-28-2013 |
| 20180023563 | AUTOMATIC TRANSMISSION PUMP APPARATUS OR PUMP APPARATUS | 01-25-2018 |
| 20190145411 | GAS EJECTION APPARATUS | 05-16-2019 |
| 418210000 | Axially spaced rotating members rotate on common axis | 1 |
| 20110256012 | POSITIVE DISPLACEMENT PUMP WITH IMPELLER AND METHOD OF MANUFACTURING - A rotary positive displacement pump ( | 10-20-2011 |
| 418215000 | Axially spaced working chambers | 5 |
| 20080199341 | MOTOR AND METHOD OF OPERATING THE SAME - A motor and a method of operating the motor are described. The motor may have a female rotor shaft having mounted thereon a female compression rotor, a female power rotor, and a spur gear. The motor may also have a male rotor shaft having mounted thereon a male compression rotor, a male power rotor and a power rotor gear. A housing containing the foregoing may have a front housing plate, a compression rotor case, an isolator plate, a power rotor case, a rear housing plate, and a gear cover adjacent the rear housing plate. The various female and male rotors are engaged with one another within the housing. | 08-21-2008 |
| 20090169409 | Vane machine, in particular vane pump - A vane machine comprises an inner rotor ( | 07-02-2009 |
| 418217000 | Axially moving abutment or vane | 3 |
| 418219000 | Vane | 3 |
| 20120076683 | Structure of Variable Oil Pump - A variable oil pump includes an inlet connected to supply oil into the housing of the variable oil pump an arc-shaped intake space formed in the housing to be connected to a pumping space between veins mounted on a rotor in the variable oil pump; and a buffer space having a large cross-sectional area than inlet and connected with inlet and intake space, such that it is possible to reduce pulse noise generated in the variable oil pump by reducing intake resistance and vortex which are generated in sucking oil at the intake side of the variable oil pump. | 03-29-2012 |
| 20130259731 | Simple rotation engine with variable compression and high gas flow - This invention relates to rotary compressors, pumps, motors and thermodynamic engines, and in essence consists of a central rotor and two rockers contained in a housing creating eight variable volumes. By the use of the construction described herein each volume remains sealed from the others during rotation of the rotor, with the contact zones moving along the surface of the rockers. Described is a way to construct the rockers and the rotor, including asymmetric and non-elliptic rotors. | 10-03-2013 |
| 20160047379 | MULTI-CYLINDER ROTARY COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE SYSTEM INCLUDING THE MULTI-CYLINDER ROTARY COMPRESSOR - A multi-cylinder rotary compressor includes plural compression mechanism parts. A drawing force is applied to a vane of at least one of the compression mechanism parts radially outward with respect to a drive shaft, making a pressing force pressing the vane toward a piston smaller than in other compression mechanism parts. In a normal state, a pressing force due to a gas pressure difference between a suction pressure and a discharge pressure is larger than the drawing force, and a vane front end is pressed against a rotary piston peripheral wall. When the drawing force becomes greater than the pressing force, the vane front end is moved to separate from the rotary piston peripheral wall with a space through which oil is introduced from a sealed container, and a retention mechanism retains the vane separated from the piston, and the compression mechanism part switches to an uncompressed state. | 02-18-2016 |
