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Class Information
Number: 418/82
Name: Rotary expansible chamber devices > Grooved abutting cylinder-rotating member end surfaces > Groove communicates with vane slot
Description: Apparatus in which the elongated recess or depression lies in a path traversed by the vane slot of a rotating working member for fluid communication therebetween.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7353796 |
Rotary machine |
Apr. 8, 2008 |
| 7338267 |
Hinged paddle pump |
Mar. 4, 2008 |
| 7331411 |
Hydraulic traction system for vehicles |
Feb. 19, 2008 |
| 7314359 |
Vane pump for continuously variable transmission |
Jan. 1, 2008 |
| 7261526 |
Cylinder for a vane motor |
Aug. 28, 2007 |
| 7192263 |
Pump and ink jet printer mounting the pump |
Mar. 20, 2007 |
| 7175403 |
Integrated select high pressure valve |
Feb. 13, 2007 |
| 7150610 |
Gas compressor |
Dec. 19, 2006 |
| 7128544 |
Crescent seal for the cylinder of a vane motor |
Oct. 31, 2006 |
| 7101161 |
Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit |
Sep. 5, 2006 |
| 7094044 |
Vane pump having a pressure compensating valve |
Aug. 22, 2006 |
| 7090476 |
Rotary fluid machine |
Aug. 15, 2006 |
| 7083394 |
Vane pump with undervane feed |
Aug. 1, 2006 |
| 7070399 |
Variable displacement pump with a suction area groove for pushing out rotor vanes |
Jul. 4, 2006 |
| 6935854 |
Gas compressor |
Aug. 30, 2005 |
| 6929457 |
Gas compressor |
Aug. 16, 2005 |
| 6857862 |
Roller vane pump |
Feb. 22, 2005 |
| 6655936 |
Rotary vane pump with under-vane pump |
Dec. 2, 2003 |
| 6589033 |
Unitary sliding vane compressor-expander and electrical generation system |
Jul. 8, 2003 |
| 6481990 |
Hydraulically balanced multi-vane hydraulic motor |
Nov. 19, 2002 |
| 6422845 |
Rotary hydraulic vane pump with improved undervane porting |
Jul. 23, 2002 |
| 6375441 |
Back pressure groove structure of variable displacement vane pump |
Apr. 23, 2002 |
| 6203303 |
Vane pump |
Mar. 20, 2001 |
| 6106255 |
High efficiency rotary vane motor |
Aug. 22, 2000 |
| 6030195 |
Rotary pump with hydraulic vane actuation |
Feb. 29, 2000 |
| 6015278 |
Vane machine, having a controlled pressure acting on the vane ends |
Jan. 18, 2000 |
| 5961307 |
Pressure proportioning regulator valve and vane machine including same |
Oct. 5, 1999 |
| 5490770 |
Vane pump having vane pressurizing grooves |
Feb. 13, 1996 |
| 5290155 |
Power steering pump with balanced porting |
Mar. 1, 1994 |
| 5266018 |
Hydraulic vane pump with enhanced axial pressure balance and flow characteristics |
Nov. 30, 1993 |
| 5213491 |
Tandem pump having a different sized vane for each pump |
May. 25, 1993 |
| 5188522 |
Vane pump with a throttling groove in the rotor |
Feb. 23, 1993 |
| 5154593 |
Vane pump with annular groove in rotor which connects undervane chambers |
Oct. 13, 1992 |
| 5033946 |
Rotary vane machine with back pressure regulation on vanes |
Jul. 23, 1991 |
| 5026263 |
Rotary vane pump with valve to control vane biassing |
Jun. 25, 1991 |
| 4913636 |
Rotary vane device with fluid pressure biased vanes |
Apr. 3, 1990 |
| 4867658 |
Rotary vane compressor having pressure-biased vanes |
Sep. 19, 1989 |
| 4810177 |
Vane compressor with vane back pressure adjustment |
Mar. 7, 1989 |
| 4743183 |
Rotary vane compressor with discharge fluid to front and rear shaft bearings and vane slats |
May. 10, 1988 |
| 4717321 |
Vane compressor with vane back pressure adjustment |
Jan. 5, 1988 |
| 4657495 |
Rotor-shaft bearing apparatus for rotary compressors |
Apr. 14, 1987 |
| 4653991 |
Vane type compressor with fluid pressure biased vanes |
Mar. 31, 1987 |
| 4636153 |
Rotary compressor with blind hole in end wall that aligns with back pressure chamber |
Jan. 13, 1987 |
| 4611977 |
Vane compressor with vane back pressure adjustment |
Sep. 16, 1986 |
| 4604041 |
Rotary vane pump |
Aug. 5, 1986 |
| 4571164 |
Vane compressor with vane back pressure adjustment |
Feb. 18, 1986 |
| 4521167 |
Low frictional loss rotary vane gas compressor having superior lubrication characteristics |
Jun. 4, 1985 |
| 4507065 |
Vane compressor having drive shaft journalled by roller bearings |
Mar. 26, 1985 |
| 4505654 |
Rotary vane device with two pressure chambers for each vane |
Mar. 19, 1985 |
| 4455129 |
Multi-vane type compressor |
Jun. 19, 1984 |
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