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Class Information
Number: 418/135
Name: Rotary expansible chamber devices > With mechanical sealing > Axially movable end wall or end wall portion > Spring biased
Description: Apparatus wherein a resilient mechanical means urges the end plate or wall into engagement with the working member side.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7410349 |
High efficiency gerotor pump |
Aug. 12, 2008 |
| 6749272 |
Rotary pump with higher discharge pressure and brake apparatus having same |
Jun. 15, 2004 |
| 6749411 |
Rotary vane hydraulic power device |
Jun. 15, 2004 |
| 6688866 |
Gerotor pump with variable tolerance housing |
Feb. 10, 2004 |
| 6655936 |
Rotary vane pump with under-vane pump |
Dec. 2, 2003 |
| 6641380 |
Vane pump having a pressure plate and a shaft seal |
Nov. 4, 2003 |
| 6599113 |
Independent vane rotary gas compressor |
Jul. 29, 2003 |
| 6599111 |
Vane pump having an intake groove through a side wall member |
Jul. 29, 2003 |
| 6527529 |
Geared feed pump having a platelike cover element and an indented end cap |
Mar. 4, 2003 |
| 6123526 |
Multistage pump and method for assembling the pump |
Sep. 26, 2000 |
| 6113370 |
Rotary vane machine |
Sep. 5, 2000 |
| 6086345 |
Two-piece balance plate for gerotor motor |
Jul. 11, 2000 |
| 6024549 |
Vane type rotary device |
Feb. 15, 2000 |
| 5862664 |
Charging pump for a hydrostatic transmission |
Jan. 26, 1999 |
| 5807090 |
Vane pump having a hydraulic resistance element |
Sep. 15, 1998 |
| 5676532 |
Adjustable one-way rotary liquid pumping device |
Oct. 14, 1997 |
| 5417556 |
Bearing for gear pump |
May. 23, 1995 |
| 5403173 |
Housing for intermeshing gear pump |
Apr. 4, 1995 |
| 5395217 |
Gear pump for oil for an internal-combustion engine, in particular for motor vehicles |
Mar. 7, 1995 |
| 5385457 |
Nutating positive displacement device having a magnetic element wire sensing arm |
Jan. 31, 1995 |
| 5290155 |
Power steering pump with balanced porting |
Mar. 1, 1994 |
| 5244367 |
Gear pump with a resilient means for biasing a side wear plate |
Sep. 14, 1993 |
| 5228594 |
Metered liquid dispensing system |
Jul. 20, 1993 |
| 5076770 |
Gear pump having improved low temperature operation |
Dec. 31, 1991 |
| 4940394 |
Adjustable wearplates rotary pump |
Jul. 10, 1990 |
| 4820139 |
Self-contained rotary fuel pump |
Apr. 11, 1989 |
| 4772190 |
Vane cell pump having resilient sealing means biasing the pressure plate |
Sep. 20, 1988 |
| 4697995 |
Rotary positive displacement fuel pump with purge port |
Oct. 6, 1987 |
| 4596519 |
Gear rotor fuel pump |
Jun. 24, 1986 |
| 4540354 |
Rotary fuel pump |
Sep. 10, 1985 |
| 4540347 |
Gerotor pump |
Sep. 10, 1985 |
| 4526518 |
Fuel pump with magnetic drive |
Jul. 2, 1985 |
| 4518331 |
Pressure loaded gear pump |
May. 21, 1985 |
| 4505655 |
Vane pump with positioning pins for cam ring and side plates |
Mar. 19, 1985 |
| 4500268 |
Rotary pump having brake means with thermal fuse |
Feb. 19, 1985 |
| 4500270 |
Gear rotor fuel pump |
Feb. 19, 1985 |
| 4484863 |
Rotary vane pump with undervane pumping and an auxiliary outlet |
Nov. 27, 1984 |
| 4447192 |
Self-contained rotary fuel pump |
May. 8, 1984 |
| 4422836 |
Rotary machine with peripherally contacting rotors and end face sealing plate |
Dec. 27, 1983 |
| 4419058 |
Hydraulic pump rotating group axial alignment structure |
Dec. 6, 1983 |
| 4415319 |
Pump unit |
Nov. 15, 1983 |
| 4408963 |
Power steering pump |
Oct. 11, 1983 |
| 4370110 |
High pressure gear pump or motor with axial retaining means in a housing cavity |
Jan. 25, 1983 |
| 4358258 |
High pressure gear pump or motor with axial retaining means and radial balancing means |
Nov. 9, 1982 |
| 4324537 |
Rotary machine with a plurality of rotors having peripheral rolling contact |
Apr. 13, 1982 |
| 4268232 |
Intermeshing gear pump with sealing means comprising two concentric slide rings |
May. 19, 1981 |
| 4245969 |
Pump |
Jan. 20, 1981 |
| 4207038 |
Power steering pump |
Jun. 10, 1980 |
| 4207033 |
Pump and motor assembly for use in regulating a flow of fuel from a source of fuel to an operating chamber of an engine of a vehicle |
Jun. 10, 1980 |
| 4201521 |
Pump and motor assembly |
May. 6, 1980 |
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