Class 418/93 - Non-working fluid biases vane

Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus in which the device includes a vane which is moved
No. of patents: 41
Last issue date: 12/19/2006

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Number	Title	Issue Date
7150610	Gas compressor To reduce an excessively high vane back pressure to an appropriate pressure to thereby relieve operational load, and to improve the vane projectability at the start and during low speed operation to thereby prevent chattering; There are provided back pressure spaces...	12/19/2006
7040872	Rotary fluid machinery Pistons (41) are slidably received in a plurality of cylinders (39) disposed radially in a rotor (31), and a plurality of vanes (42) cooperating with the pistons (41) are disposed radially in the rotor (31), so that a vane c...	05/09/2006
6935854	Gas compressor A gas compressor has a cylinder in which a refrigerant gas is compressed and a side block mounted to an end surface of the cylinder. The side block has suction holes each having a first end opening to an outer surface of the side block and a second end opening into ...	08/30/2005
6929457	Gas compressor A rotary vane gas compressor has a cylinder, a rotor in the cylinder, and vanes slidably disposed in radial vane grooves in the rotor to define compression chambers for intaking, compressing and discharging compressed gas during rotation of the rotor. A flat groove ...	08/16/2005
6672101	Electrically driven compressors and methods for circulating lubrication oil through the same An oil storage area (45a) is defined on the bottom of a motor chamber (45) of a scroll compressor (1). An oil transfer route (4a) is defined in the portion of a center housing (4) that corresponds to the storage area (45a). Lubricating oil L is separated ...	01/06/2004
6394777	Cooling gas in a rotary screw type pump A rotary screw type pump is provided with internal cavities within the rotors. The rotors include shaft portions that extend out from the casing that contains the screw portion of the rotors. The cavities extend from the screw portion of the rotors at the...	05/28/2002
6019585	Oil-sealed vane-type rotary vacuum pump with oil feed The invention concerns an oil-sealed vane-type rotary vacuum pump with a suction chamber (8) housing a rotatably mounted rotor (3) which has an anchoring section (21) and a bearing section (23) with a slot (24) in which two vanes (26) are mounted with a s...	02/01/2000
5769617	Vane-type compressor exhibiting efficiency improvements and low fabrication cost A rotary sliding-vane compressor is described which contains a single rotor with compressor and expander sections, together with a reduced number of parts and efficiency improvements compared to conventional compressors....	06/23/1998
5499515	Rotary vane-type compressor A vane-type rotary refrigerant compressor adapted for use in an air conditioning system is disclosed which includes a rotor fixed on a drive shaft for rotation therewith and disposed in an elliptical chamber of a cylinder block which is enclosed by a hous...	03/19/1996
5242280	Rotary type multi-stage compressor with vanes biased by oil pressure A multi-stage rotary type compressor is constituted in such a manner that an electric motor and a plurality of compression elements to be driven by the electric motor are disposed in a closed container and the compression elements thus-disposed are sequen...	09/07/1993
5151021	Fluid compressor with adjustable bearing support plate In a fluid compressor, a cylinder is arranged within a sealed casing. A piston having a spiral groove is placed within the cylinder. The piston is made eccentric to the cylinder such that part of the piston is put in contact with the inner peripheral surf...	09/29/1992
5141423	Axial flow fluid compressor with oil supply passage through rotor A compressor having a cylinder and a cylindrical rotational body housed within the cylinder. A spiral groove is formed in the outer peripheral surface of the rotational body, and a spiral blade is fitted in the groove so as to be freely retreated in and p...	08/25/1992
4936761	Vane backpressure providing apparatus for sliding vane type compressor In a sliding vane type compressor including a cylinder having a cylindrical inner wall, a rotor disposed within the cylinder and having a vane slot, and an oil supply means for feeding oil during the rotation of the rotor to the vane backpressure chamber ...	06/26/1990
4867658	Rotary vane compressor having pressure-biased vanes A rotary vane compressor has a cylinder having an oval-shaped compartment in which is rotatably mounted a rotor. Front and rear side blocks close the opposite ends of the cylinder. A plurality of vanes are slidably mounted in slots formed around the rotor...	09/19/1989
4810177	Vane compressor with vane back pressure adjustment A vane compressor has a vane back pressure adjustment device including back-pressure chambers defined in a vane-supporting rotor and surrounded by vanes and side blocks secured to axial ends of a cylinder. The back-pressure chamber has axial ends disposed...	03/07/1989
4795325	Compressor of rotary vane type A compressor of the rotary vane type including an annular space dormed inside a rotor for communicating vane slots formed in the rotor in communication with one another and for storing lubricant therein. As vanes each received in one of the vane slots mov...	01/03/1989
4717321	Vane compressor with vane back pressure adjustment A vane compressor has a vane back pressure adjustment device including back-pressure chambers defined in a vane-supporting rotor and surrounded by vanes and side blocks secured to axial ends of a cylinder. The back-pressure chamber has axial ends disposed...	01/05/1988
4653991	Vane type compressor with fluid pressure biased vanes The compressor is characterized by a high pressure port provided in a rear plate at a position that the bottom portion of a vane groove of a vane which reaches a delivery port contacts the high pressure port, and low pressure ports provided, independently...	03/31/1987
4611977	Vane compressor with vane back pressure adjustment A vane compressor has a vane back pressure adjustment device including back-pressure chambers defined in a vane-supporting rotor and surrounded by vanes and side blocks secured to axial ends of a cylinder. The back-pressure chamber has axial ends disposed...	09/16/1986
4571164	Vane compressor with vane back pressure adjustment A vane compressor has a vane back pressure adjustment device including back-pressure chambers defined in a vane-supporting rotor and surrounded by vanes and side blocks secured to axial ends of a cylinder. The back-pressure chamber has axial ends disposed...	02/18/1986
4507065	Vane compressor having drive shaft journalled by roller bearings A sealing chamber is defined between the front head and the front side block, and an oil chamber between the rear side block and a partition member secured to the rear end face of the rear side block, respectively. The drive shaft, on which the rotor is r...	03/26/1985
4484868	Vane compressor having improved cooling and lubrication of drive shaft-seal means and bearings A sealing chamber is defined between the front head and the front side block. The drive shaft on which the rotor is rigidly fitted is journalled by front and rear plain bearings provided on the front and rear side blocks, respectively. The bearing on the ...	11/27/1984
4478562	Oil lubrication of vacuum pump with pulsating oil feed A method and apparatus for lubricating a vacuum pump, preferably a rotary vane vacuum pump, wherein the pump rotor is mounted on a hollow drive shaft continuously fed with a lubricating oil stream under excess pressure from an oil pump, radial openings be...	10/23/1984
4468180	Vane compressor having intermittent oil pressure to the vane back pressure chamber The front and rear side blocks are each formed therein with a first lubricating oil passage which supplies high pressure lubricating oil, and at least one of the side blocks is formed therein with a second lubricating oil passage communicating with the ba...	08/28/1984
4455129	Multi-vane type compressor A multi-vane type compressor formed with vane back pressure spaces having introduced thereinto a suction gas pressure in the suction and compression strokes and a discharge gas pressure in the discharge stroke. The compressor includes supply grooves for i...	06/19/1984
4447196	Rotary vane compressor with valve control of undervane pressure A vane type rotary compressor has a housing and end plates secured thereto to cooperate therewith to define a cylindrical bore in which a rotor is eccentrically mounted for rotation with vanes slidably mounted in vane grooves formed in the outer periphery...	05/08/1984
4408969	Vane compressor having improved rotor supporting means A vane compressor is provided which includes a rotor which has an internal space formed at its central portion and communicating with a plurality of vane-inserted slits formed in its outer peripheral surface, and first and second axial through holes exten...	10/11/1983
4403929	Rotary compressor A rotary compressor including a housing having therein a cylindrical bore, and end plates closing opposite ends of the bore and supporting a rotary shaft supporting in turn a rotor formed with a plurality of circumferentially spaced vane grooves. A vane i...	09/13/1983
4402653	Rotary compressor A rotary compressor comprises an open-ended cylinder having its open ends closed by end plates and an eccentrically rotatable rotor housed inside the cylinder. A hydrodynamic seal is provided on either the rotor or each of the end plates for minimizing an...	09/06/1983
4342547	Rotary vane compressor with valve control of oil to bias the vanes An improved vane type rotary compressor provided with a control mechanism of a lubricating oil supply passage by which the lubricating oil supply passage is arranged to be opened during operation of the compressor, and to be closed during shut-down of the...	08/03/1982
4274816	Rotary vane compressor with chamfered vane slots A rotor (18) is disposed in a bore (14) of a cylinder (13) and carries vanes (33), (34), (36), (37) in radial slots (28), (29), (31), (32), the vanes (33), (34),(36), (37) being urged into engagement with the wall of the bore (14) by oil pressure applied ...	06/23/1981
4248575	Rotary fluid pressure biased vane compressor with pressure release means A vane compressor includes a hollow stator, and a rotor which is received in the stator for rotation about an axis. The rotor is provided with a plurality of throughgoing passages which extend radially and outwardly relative to the axis. Each passage rece...	02/03/1981
4231727	Vacuum producing rotary vane pump with shaft lubrication A rotary vacuum pump is provided with a housing having a cylindrical chamber. A rotor having a plurality of slideably mounted vanes is mounted within the chamber by a shaft extending through an eccentric bore. Hydraulic oil delivered to the rotor under pr...	11/04/1980
4209287	Rotary vane compressor with start-up pressure biasing vanes A rotor is eccentrically mounted in a bore of a housing and formed with radial slots in which vanes are slidably retained. A lubricant passageway leads from an oil sump through the radially inner portions of the slots to a fluid inlet, the oil sump commun...	06/24/1980
4184821	High velocity rotary vane cooling system A reverse Brayton cycle rotary vane cooling system having a compressor and an expander driven by a common shaft. The cooling system includes a plurality of vanes made of a carbon epoxy plastic composite with bearing support inserts molded into the plastic...	01/22/1980
4144002	Rotary compressor A rotor is operatively provided in a bore of a cylinder which is formed with an inlet and an outlet. The cylinder is enclosed by a housing with an annular chamber being defined between the cylinder and the housing. The housing has an inlet which is connec...	03/13/1979
4135865	Rotary vane compressor with outlet check valve for start-up pressure on lubricant system A rotor is eccentrically mounted in a bore of a housingand formed with radial slots in which vanes are slidably retained. A lubricant passageway leads from an oil sump through the radially inner portions of the slots to a fluid inlet, the oil sump communi...	01/23/1979
4086040	Rotary compressor comprising improved rotor lubrication system A rotor is eccentrically mounted in a bore of a housing and formed with radial slots in which vanes are slidably retained. An oil passageway leads from an oil sump through the radially inner portions of the slots to a fluid inlet passageway, the oil sump ...	04/25/1978
4086041	Rotary compressor comprising improved rotor lubrication system A rotor is eccentrically mounted in a bore of a housing and formed with radial slots in which vanes are slidably retained. A lubricant passageway leads from an oil sump through the radially inner portions of the slots to a fluid inlet, the oil sump commun...	04/25/1978
4071306	Rotary vane compressor with relief means for vane slots A rotary, sliding vane compressor is provided with means for supplying a relatively small, predetermined quantity of an incompressible fluid, such as lubricating oil, underneath the vanes. The fluid is injected at a point while the vanes are collapsing wi...	01/31/1978

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Class 418/93 - Non-working fluid biases vane