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Class Information
Number: 418/166
Name: Rotary expansible chamber devices > Moving cylinder > Rotating > Rotary internal reacting member > Intermeshing peripheral surfaces
Description: Apparatus wherein the rotating outer and inner members have matched projecting and recessed surface portions of substantially like dimension which interfit during at least a portion of their rotative movement.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7591637 |
G-rotor pump |
Sep. 22, 2009 |
| 7520738 |
Closed system rotary machine |
Apr. 21, 2009 |
| 7488163 |
Trochoid oil pump |
Feb. 10, 2009 |
| 7478619 |
Rotary engine for motor vehicles with very low consumption and pollution rate |
Jan. 20, 2009 |
| 7427191 |
Oil pump |
Sep. 23, 2008 |
| 7367782 |
Pump plate of a rotary feed pump |
May. 6, 2008 |
| 7290995 |
Tandem type trochoid pump and method of assembling the same |
Nov. 6, 2007 |
| 7278841 |
Gerotor pump |
Oct. 9, 2007 |
| 7153110 |
Variable volume flow internal gear pump |
Dec. 26, 2006 |
| 7147445 |
Turntable with turning guide |
Dec. 12, 2006 |
| 7137797 |
Turntable with gerotor |
Nov. 21, 2006 |
| 6968823 |
Rotary internal combustion engine |
Nov. 29, 2005 |
| 6929458 |
Oil pump rotor |
Aug. 16, 2005 |
| 6893238 |
Ring gear machine clearance |
May. 17, 2005 |
| 6890164 |
Internal gear pump |
May. 10, 2005 |
| 6889871 |
Internally generated rotor set for low viscosity and abrasive metering applications |
May. 10, 2005 |
| 6824486 |
Gear pump for automatic transmission |
Nov. 30, 2004 |
| 6782866 |
Rotary machine and thermal cycle |
Aug. 31, 2004 |
| 6739850 |
Motor-type fuel pump for vehicle |
May. 25, 2004 |
| 6672275 |
Rotary machine and thermal cycle |
Jan. 6, 2004 |
| 6551083 |
Micromotor and micropump |
Apr. 22, 2003 |
| 6544013 |
Oil pump apparatus |
Apr. 8, 2003 |
| 6530211 |
Quasi-isothermal Brayton Cycle engine |
Mar. 11, 2003 |
| 6484687 |
Rotary machine and thermal cycle |
Nov. 26, 2002 |
| 6481991 |
Trochoid gear type fuel pump |
Nov. 19, 2002 |
| 6398531 |
Pump drive system |
Jun. 4, 2002 |
| 6368086 |
Universal pump bracket |
Apr. 9, 2002 |
| 6336317 |
Quasi-isothermal Brayton cycle engine |
Jan. 8, 2002 |
| 6250900 |
Positive displacement hydraulic unit with near-zero side clearance |
Jun. 26, 2001 |
| 6186757 |
Internal-gear machine |
Feb. 13, 2001 |
| 6179596 |
Micromotor and micropump |
Jan. 30, 2001 |
| 6174151 |
Fluid energy transfer device |
Jan. 16, 2001 |
| 6167907 |
Power transfer pump |
Jan. 2, 2001 |
| 6152717 |
Internal gear pumps |
Nov. 28, 2000 |
| 6149410 |
Reversible gerotor pump having magnetic attraction between the rotor and the reversing ring |
Nov. 21, 2000 |
| 6116878 |
Oil pump apparatus |
Sep. 12, 2000 |
| 6106256 |
Gear rotor fuel pump |
Aug. 22, 2000 |
| 6102684 |
Cavitation noise abatement in a positive displacement fuel pump |
Aug. 15, 2000 |
| 6082984 |
Fluid pump having pressure pulsation reducing passage |
Jul. 4, 2000 |
| 6077059 |
Oil pump rotor |
Jun. 20, 2000 |
| 6074189 |
Filling member-less internal-gear machine |
Jun. 13, 2000 |
| 6039552 |
Rotary compressor |
Mar. 21, 2000 |
| 6017202 |
Bi-directional gerotor-type fluid pump |
Jan. 25, 2000 |
| 5997262 |
Screw pins for a gear rotor fuel pump assembly |
Dec. 7, 1999 |
| 5472329 |
Gerotor pump with ceramic ring |
Dec. 5, 1995 |
| 5407337 |
Helical gear fluid machine |
Apr. 18, 1995 |
| 5405254 |
Rotary fluid displacement apparatus |
Apr. 11, 1995 |
| 5380177 |
Positive displacement machine with planetary motion and hypertrochoidal geometry |
Jan. 10, 1995 |
| 5316457 |
Gear pump with improved gear/shaft retention |
May. 31, 1994 |
| 5219277 |
Electric-motor fuel pump |
Jun. 15, 1993 |
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