ClassID:

143418

F04C2/10 - page 2 - CPC Classification

Classification description:

Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member

Recent Application in this class:
#301
20120087821
2012-04-12

Pump assembly, in particular for helicopter lubrication

#302
20120080936
2012-04-05

Shaft sealing apparatus, pump apparatus and brake hydraulic pressure control device using same

#303
20120051961
2012-03-01

Pump apparatus with pressing means

#304
20120051960
2012-03-01

Rotary pump device having seal mechanism which includes resin member and reinforcing ring in hollow portion of resin member

#305
20120051959
2012-03-01

Fluid machine and seal member used for the same

#306
20120003107
2012-01-05

Pumps and pump heads comprising volume-compensation feature

#307
20110311373
2011-12-22

Rotary pump for a vehicle

#308
20110252906
2011-10-20

Vehicle oil pump

#309
20110225962
2011-09-22

Variable Speed Hydraulic Pump Apparatus and Method

#310
20110217192
2011-09-08

Outer ring driven gerotor pump

#311
20110200476
2011-08-18

Sealing system for gerotor apparatus

#312
20110135527
2011-06-09

Low noise type balance shaft module

#313
20110062773
2011-03-17

Pump assembly

#314
20100316519
2010-12-16

Friction drive pump for transfer cases, etc

#315
20100293933
2010-11-25

Method for automatically determining the condition of a hydraulic aggregate

#316
20100189582
2010-07-29

Dual stage pump having intermittent mid-shift load supports

#317
20100178190
2010-07-15

Accurate powder metal component, assembly and method

#318
20100158735
2010-06-24

Hydraulic machine

#319
20100124513
2010-05-20

Gear pump

#320
20100111742
2010-05-06

Rotary positive displacement pump with magnetic coupling having integrated cooling system

#321
20100098571
2010-04-22

Pump Apparatus and Methods for Using Same

#322
20100087695
2010-04-08

ENHANCEMENT OF SURFACE-ACTIVE SOLID-PHASE HETEROGENEOUS CATALYSTS

#323
20100061872
2010-03-11

Gear Pump

#324
20100059315
2010-03-11

HIGH EFFICIENCY LUBRICATION PUMP

#325
20100047090
2010-02-25

Fuel delivery module

#326
20100028172
2010-02-04

Vehicle transmission with fluid pump having a recirculation circuit

#327
20100003152
2010-01-07

Gerotor apparatus for a quasi-isothermal brayton cycle engine

#328
20090266840
2009-10-29

Substance Injecting Apparatuses and Methods for Using Same

#329
20090260357
2009-10-22

Servo-actuated supercharger operating mechanism

#330
20090238708
2009-09-24

Rotary pump

#331
20090129950
2009-05-21

Oil pump resonator

#332
20090123310
2009-05-14

External inline LPG fuel pump

#333
20090087563
2009-04-02

COATING OF DISPLACER COMPONENTS (TOOTH COMPONENTS) FOR PROVIDING A DISPLACER UNIT WITH CHEMICAL RESISTANCE AND TRIBOLOGICAL PROTECTION AGAINST WEAR

#334
20090087333
2009-04-02

Gerotor pump

#335
20090047149
2009-02-19

Feed pump in a motor vehicle

#336
20090016899
2009-01-15

Oil well pump apparatus

#337
20080289926
2008-11-27

Seal assembly for reducing fluid loss from transmission pump

#338
20080260563
2008-10-23

Pump having toothing on the rotary and drive shaft

#339
20080253904
2008-10-16

Oil pump pressure control device

#340
20080240960
2008-10-02

Pump

#341
20080232994
2008-09-25

Inner rotor of internal gear pump having convex small circular arc parts

#342
20080190496
2008-08-14

Oil pump pressure control device

#343
20080087487
2008-04-17

Pump drive system

#344
20080038136
2008-02-14

Long life telescoping gear pumps and motors

#345
20080031759
2008-02-07

Hydraulic rotary motor

#346
20070231177
2007-10-04

Pump device

#347
20070224064
2007-09-27

Pump Apparatus And Methods For Using Same

#348
20070224062
2007-09-27

Oil pump structure of transmission

#349
20070224053
2007-09-27

Oil pump

#350
20070220749
2007-09-27

Method of designing tooth profile for internal gear type pump

#351
20070199408
2007-08-30

Inner rotor and outer rotor of internal gear pump

#352
20070134119
2007-06-14

Hydraulic machine

#353
20070122298
2007-05-31

Electrically driven pump unit

#354
20070096550
2007-05-03

Vehicular brake device

#355
20070059187
2007-03-15

Oil and vacuum pumps group for a motor vehicle engine

#356
20070031308
2007-02-08

Enhancement of surface-active solid-phase heterogenous catalysts

#357
20060280636
2006-12-14

Pump with multiple volume streams

#358
20060153722
2006-07-13

Pump with side surface coating

#359
20060018768
2006-01-26

Oil pump adapted to prevent leakage without using sealing member

#360
20050271535
2005-12-08

Closed system rotary machine

#361
20050226757
2005-10-13

Variable capacity pump/motor

#362
20050214149
2005-09-29

Displacement pump with variable volume flow

#363
20050163640
2005-07-28

Rotary drivehead for downhole apparatus

#364
20050139189
2005-06-30

Adapter, to interface counter-rotating torque producing engine mechanisms with stationary support accessories, for torque free output and torque sensitive environments

#365
20050098385
2005-05-12

Oil supply system for engine

#366
20050098143
2005-05-12

Two-cycle engine for counter-rotation especially for aviation applications

#367
20050058553
2005-03-17

Connection structure between a plastic gear and a support shaft, oil pump including the connection structure, and engine incorporating same

#368
18650258
2024-11-12

Electric oil pump including pump housing and eccentric assembly non-concentrically arranged with pump housing

#369
14868692
2016-09-13

Transfer case lubrication system with pump control