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
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
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

Average Time to Issuance