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Class Information
Number: 418/93
Name: Rotary expansible chamber devices > Heat exchange or non-working fluid lubricating or sealing > Non-working fluid passage in inner working or reacting member > Non-working fluid biases vane
Description: Apparatus in which the device includes a vane which is moved into cylinder wall engagement either by (1) pressurized nonworking fluid directed to the vane slot or (2) pressurized working fluid combined with a nonworking fluid directed to the vane slot.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7150610 |
Gas compressor |
Dec. 19, 2006 |
| 6935854 |
Gas compressor |
Aug. 30, 2005 |
| 6929457 |
Gas compressor |
Aug. 16, 2005 |
| 6672101 |
Electrically driven compressors and methods for circulating lubrication oil through the same |
Jan. 6, 2004 |
| 6394777 |
Cooling gas in a rotary screw type pump |
May. 28, 2002 |
| 6019585 |
Oil-sealed vane-type rotary vacuum pump with oil feed |
Feb. 1, 2000 |
| 5769617 |
Vane-type compressor exhibiting efficiency improvements and low fabrication cost |
Jun. 23, 1998 |
| 5499515 |
Rotary vane-type compressor |
Mar. 19, 1996 |
| 5242280 |
Rotary type multi-stage compressor with vanes biased by oil pressure |
Sep. 7, 1993 |
| 5151021 |
Fluid compressor with adjustable bearing support plate |
Sep. 29, 1992 |
| 5141423 |
Axial flow fluid compressor with oil supply passage through rotor |
Aug. 25, 1992 |
| 4936761 |
Vane backpressure providing apparatus for sliding vane type compressor |
Jun. 26, 1990 |
| 4867658 |
Rotary vane compressor having pressure-biased vanes |
Sep. 19, 1989 |
| 4810177 |
Vane compressor with vane back pressure adjustment |
Mar. 7, 1989 |
| 4795325 |
Compressor of rotary vane type |
Jan. 3, 1989 |
| 4717321 |
Vane compressor with vane back pressure adjustment |
Jan. 5, 1988 |
| 4653991 |
Vane type compressor with fluid pressure biased vanes |
Mar. 31, 1987 |
| 4611977 |
Vane compressor with vane back pressure adjustment |
Sep. 16, 1986 |
| 4571164 |
Vane compressor with vane back pressure adjustment |
Feb. 18, 1986 |
| 4507065 |
Vane compressor having drive shaft journalled by roller bearings |
Mar. 26, 1985 |
| 4484868 |
Vane compressor having improved cooling and lubrication of drive shaft-seal means and bearings |
Nov. 27, 1984 |
| 4478562 |
Oil lubrication of vacuum pump with pulsating oil feed |
Oct. 23, 1984 |
| 4468180 |
Vane compressor having intermittent oil pressure to the vane back pressure chamber |
Aug. 28, 1984 |
| 4455129 |
Multi-vane type compressor |
Jun. 19, 1984 |
| 4447196 |
Rotary vane compressor with valve control of undervane pressure |
May. 8, 1984 |
| 4408969 |
Vane compressor having improved rotor supporting means |
Oct. 11, 1983 |
| 4403929 |
Rotary compressor |
Sep. 13, 1983 |
| 4402653 |
Rotary compressor |
Sep. 6, 1983 |
| 4342547 |
Rotary vane compressor with valve control of oil to bias the vanes |
Aug. 3, 1982 |
| 4274816 |
Rotary vane compressor with chamfered vane slots |
Jun. 23, 1981 |
| 4248575 |
Rotary fluid pressure biased vane compressor with pressure release means |
Feb. 3, 1981 |
| 4231727 |
Vacuum producing rotary vane pump with shaft lubrication |
Nov. 4, 1980 |
| 4209287 |
Rotary vane compressor with start-up pressure biasing vanes |
Jun. 24, 1980 |
| 4184821 |
High velocity rotary vane cooling system |
Jan. 22, 1980 |
| 4144002 |
Rotary compressor |
Mar. 13, 1979 |
| 4135865 |
Rotary vane compressor with outlet check valve for start-up pressure on lubricant system |
Jan. 23, 1979 |
| 4086041 |
Rotary compressor comprising improved rotor lubrication system |
Apr. 25, 1978 |
| 4086040 |
Rotary compressor comprising improved rotor lubrication system |
Apr. 25, 1978 |
| 4071306 |
Rotary vane compressor with relief means for vane slots |
Jan. 31, 1978 |
| RE29378 |
Compact housing for rotary compressor system |
Aug. 30, 1977 |
| 3994641 |
Rotary positive fluid displacement machine |
Nov. 30, 1976 |
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