F04C 2/04

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Description

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


Subclass 2/04: 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 arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12221962 Scroll compressor with circular surface terminationsMay 10, 23Feb 11, 25Not available
11821428 Motor-integrated fluid machineJul 15, 16Nov 21, 23Hitachi Industrial Equipment Systems Co., Ltd.
11746779 Scroll assembly and scroll compressorAug 31, 22Sep 05, 23Danfoss Tianjin Ltd.
11686309 Scroll compressor with circular surface terminationsMay 23, 22Jun 27, 23Not available
11655813 Compressor modulation system with multi-way valveJul 29, 21May 23, 23Emerson Climate Technologies, Inc.
11437882 Motor-driven compressor and method of assembling motor-driven compressorApr 20, 20Sep 06, 22KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
11396811 Variable lubricant vane pumpDec 13, 17Jul 26, 22PIERBURG PUMP TECHNOLOGY GMBH
11339786 Scroll compressor with circular surface terminationsNov 07, 16May 24, 22Not available
11261866 Compressor having external temperature sensor and method of manufacturing compressorAug 02, 19Mar 01, 22Daikin Industries Ltd.
11060519 Rotary fluid transmission deviceOct 22, 20Jul 13, 21Not available
10472966 Rotary expansible chamber devices and systems incorporating the sameMar 02, 16Nov 12, 19Not available
9957962 Scroll compressorNov 12, 15May 01, 18LG Electronics Inc.
9822642 Rotary machineMar 03, 16Nov 21, 17LUMENIUM LLC
9714657 Variable displacement vane pump and power steering systemFeb 19, 14Jul 25, 17HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.
9546654 Hydraulic motor-pump with fixed or variable displacementFeb 04, 14Jan 17, 17Not available
9441626 Oval chamber vane pumpMar 14, 13Sep 13, 16WINDTRANS SYSTEMS LTD.
9309765 Rotary machineNov 05, 14Apr 12, 16LUMENIUM LLC
9309766 Refrigeration system including a rotary expansible chamber device having adjustable working-fluid portsAug 06, 13Apr 12, 16Not available
9206800 Multiple stage passive variable displacement vane pumpMay 17, 13Dec 08, 15MAGNA POWERTRAIN INC.
9080568 Rotary expansible chamber devices having adjustable arcs of rotation, and systems incorporating the sameDec 16, 14Jul 14, 15Not available

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2024/0263,631 COMPRESSOR UNIT AND REFRIGERATION APPARATUSMar 21, 24Aug 08, 24Not available
2023/0055,642 Compressor Modulation System With Multi-Way ValveNov 04, 22Feb 23, 23Emerson Climate Technologies, Inc.
2023/0036,027 Compressor Modulation System With Multi-Way ValveJul 29, 21Feb 02, 23Emerson Climate Technologies, Inc.
2022/0010,794 ROTARY DEVICE AND POWER TRANSMISSION DEVICEJun 07, 21Jan 13, 22Exedy Corporation
2019/0353,160 SCROLL COMPRESSORJan 25, 18Nov 21, 19MITSUBISHI HEAVY INDUSTRIES, LTD.
2019/0277,280 PUMP DEVICEMar 05, 19Sep 12, 19Aisin Seiki Kabushiki Kaisha

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Patents Issued To Date - By Filing Year

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