F04C 2/08

Sub-Class

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Description

Class  F04C : ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS


Subclass 2/08: Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12264672 Motor vehicle oil pumpDec 27, 21Apr 01, 25O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.
12258967 Energy transfer machine for corrosive fluidsApr 22, 24Mar 25, 25Genesis Advanced Technology Inc.
12234823 Internal gear pump and internal gear motorMar 09, 22Feb 25, 25Shimadzu Corporation
12221959 Bushing assembly and positive displacement rotary pump comprising said bushing assemblyDec 11, 20Feb 11, 25Settima Meccanica S.r.l.
12196206 Outer ring for an oil pump and a method for manufacturing the sameNov 15, 23Jan 14, 25Hyundai Motor Company; KIA CORPORATION; MYUNG HWA IND. CO., LTD.;
12180959 Gear pump with intermeshing gear wheels enclosed by housing with bearing journals arranged on shaft axes and use thereofMar 07, 22Dec 31, 24MAAG Pump Systems AG
12140141 Electric oil pump including pump housing and eccentric assembly non-concentrically arranged with pump housingApr 30, 24Nov 12, 24HANGZHOU QUADRANT TECHNOLOGY CO., LTD.
12140144 Mud motor rotor with core and shellSep 26, 23Nov 12, 24Dowell -- A Division of Schlumberger Technology Corporation
12136863 Rotary electric machine and pumpMar 30, 22Nov 05, 24NIDEC TOSOK CORPORATION
12113423 Electric motor with integrated pumpFeb 14, 22Oct 08, 24DANA MOTION SYSTEMS ITALIA S.R.L.
12104595 Pressure pockets on the hollow wheelNov 09, 22Oct 01, 24Schwäbische Hüttenwerke Automotive GMbH
12078166 Screw spindle pumpDec 09, 22Sep 03, 24LEISTRITZ PUMPEN GMBH
12078171 Screw assembly for a triple screw pump and triple screw pump comprising said assemblyDec 28, 21Sep 03, 24Settima Meccanica S.r.l.
12060883 Pump integrated with two independently driven prime moversJun 08, 23Aug 13, 24Project Phoenix, LLC
12060878 System to pump fluid and control thereofJun 25, 21Aug 13, 24Project Phoenix, LLC
12055140 Electric-motor-driven hydraulic pump actuatorApr 08, 22Aug 06, 24Schaeffler Technologies AG & Co. KG
12055141 PumpOct 07, 20Aug 06, 24LG INNOTEK CO., LTD.
12055144 Pump particularly for pumping a liquid such as ink, paint, glue or the likeFeb 05, 21Aug 06, 24Fluid-O-Tech, S.r.l.
12049282 Hydraulic automatic transmission bicycleMay 09, 22Jul 30, 24Not available
12044238 Gear pump or motor with communication paths to suction and discharge in closed space between the drive and driven gearsJan 30, 20Jul 23, 24Shimadzu Corporation

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0116,271 PROCESS PUMP WITH DYNAMIC SEAL FOR DRY RUN CAPABILITYSep 30, 24Apr 10, 25Viking Pump Inc.
2025/0035,111 DIAGNOSTIC CHECKS OF A GEAR PUMP IN A FLUID SYSTEMDec 13, 22Jan 30, 25Not available
2025/0027,427 GAS TURBINE ENGINE HAVING A HYDRAULIC FAN BRAKEJan 18, 24Jan 23, 25Not available
2025/0012,274 FUEL SUPPLY SYSTEM AND FUEL SUPPLY METHOD FOR AIRCRAFT GAS TURBINE ENGINESep 25, 24Jan 09, 25IHI Corporation
2025/0012,275 Gerotor Pump And Motor/Pump UnitJul 03, 24Jan 09, 25Not available
2024/0418,166 3-DIMENSIONAL PUMP ROTOR PROFILEAug 27, 24Dec 19, 24Not available
2024/0352,930 POSITIVE DISPLACEMENT PUMP WITH PRESSURE RELIEFApr 29, 24Oct 24, 24Not available
2024/0352,934 GEAR PUMP AND ITS USEApr 01, 24Oct 24, 24Not available
2024/0326,544 HYDRAULICS CONSTRUCTION KITMar 04, 24Oct 03, 24RAPA Automotive GmbH & Co. KG
2024/0307,611 WEARABLE FLUID DELIVERY SYSTEMMay 22, 24Sep 19, 24Not available
2024/0307,836 LIQUID PUMPMar 14, 24Sep 19, 24Not available
2024/0300,299 GEAR PUMPMar 06, 24Sep 12, 24Not available
2024/0301,877 GEAR PUMPMar 05, 24Sep 12, 24Valeo Embrayages
2024/0266,902 ELECTRIC AND HYDRAULIC MACHINEApr 17, 24Aug 08, 24Not available
2024/0254,988 Gear PumpJan 14, 24Aug 01, 24Not available
2024/0239,188 METHOD FOR CONTROLLING A GEAR PUMPNov 20, 23Jul 18, 24Dr. Ing. h.c. F. Porsche Aktiengesellschaft
2024/0200,555 VOLUME EXPANSION FOR CAVITATION REDUCTION IN A GEAR PUMP MESHSep 25, 23Jun 20, 24Not available
2024/0183,405 DUAL PHASE DIFFERENCE PUMPNov 15, 23Jun 06, 24Shimadzu Corporation
2024/0151,226 PUMP DEVICEMar 22, 22May 09, 24AISIN CORPORATION
2024/0116,739 SINGLE-MOTOR, DUAL-HYDRAULIC-CIRCUIT DRIVE SYSTEM FOR INDUSTRIAL MATERIALS-HANDLING VEHICLE AND METHOD FOR CONTROLLING THE SAMEOct 06, 23Apr 11, 24Hyster-Yale Maximal Forklift (Zhejiang) Co., Ltd.

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