F04C 2/00






Subclass 2/00: 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)

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
10590928 Gear pump that removes air from pumped oilNov 28, 17Mar 17, 20GM Global Technology Operations LLC
10584588 Pump deviceMar 31, 16Mar 10, 20Ebm-Papst St. Georgen GmbH & Co. KG
10584803 Solenoid valve and oil pumpJun 01, 17Mar 10, 20Aisin Seiki Kabushiki Kaisha; c/o TOYOTA JIDOSHA KABUSHIKI KAISHA;
10584702 Equal-walled gerotor pump for wellbore applicationsMar 15, 16Mar 10, 20Saudi Arabian Oil Company
10584703 Vane pump device for controlling fluid supplied to vane groovesDec 22, 16Mar 10, 20Showa Corporation
10578102 Vane pump device that controls pressure pushing vanes against a cam ringDec 20, 16Mar 03, 20Showa Corporation
10570901 Compressor having sound isolation featureJun 26, 17Feb 25, 20Emerson Climate Technologies, Inc.
10570899 Scroll compressor having scroll with oil dimplesApr 19, 17Feb 25, 20LG Electronics Inc.
10563651 Stator for an eccentric screw pump, an eccentric screw pump and a method for producing a statorAug 04, 15Feb 18, 20NETZSCH Pumpen & Systeme GmbH; 3S Schnecken, Spindeln & Spiralen Bearbeitungsges m.b.H.;
10563655 Rotary compressor for compressing refrigerant using cylinderNov 07, 17Feb 18, 20Fujitsu General Limited
10550696 Rotary compressor with vane coupled to rolling pistonAug 19, 15Feb 04, 20LG Electronics Inc.
10550841 Oilless compressorFeb 12, 16Feb 04, 20Hitachi Industrial Equipment Systems Co., Ltd.
10544786 Compressor having sound isolation featureJun 26, 17Jan 28, 20Emerson Climate Technologies, Inc.
10539351 Compressor with fluid cavity for coolingFeb 07, 17Jan 21, 20Emerson Climate Technologies, Inc.
10539136 Rotary piston pump, method for fixing rotary pistons of a rotary piston pump and method for dismantling rotary pistons of a rotary piston pumpNov 20, 15Jan 21, 20NETZSCH Pumpen & Systeme GmbH
10539135 Progressive cavity pump and method for operating same in boreholesSep 18, 17Jan 21, 20Husky Oil Operations Limited
10533419 Pump device with pump ring having curved contact portionMar 31, 16Jan 14, 20Ebm-Papst St. Georgen GmbH & Co. KG
10527037 Mud motor stators and pumps and method of makingApr 18, 16Jan 07, 20Baker Hughes, a GE company, LLC
10519955 Connection structure of exhaust bearing seat for compressor and screw compressorOct 26, 16Dec 31, 19Gree Electric Appliances Inc. of Zhuhai
10514032 Tolerance independent crescent internal gear pumpFeb 05, 15Dec 24, 19CIRCOR PUMPS NORTH AMERICA, LLC

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Recent Publications

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