F04C 2/00

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Description

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


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
12117002 Scroll compressor having oil supply groove in communication with oil supply hole defined from oil passage to rotating shaft surfaceJan 04, 23Oct 15, 24LG Electronics Inc.
12098721 Sealing and compliance in a scroll compressorJun 23, 22Sep 24, 24Copeland Europe GmbH
12097504 Externally serrated rotary shredder and submersible shredder pump having an externally serrated rotary shredderFeb 07, 24Sep 24, 24Not available
12092103 Fuel pump with determinant translating cam arrangementSep 26, 22Sep 17, 24EATON INTELLIGENT POWER LIMITED
12078167 Fitting of an electrical terminal for a scroll compressorJun 23, 22Sep 03, 24Copeland Europe GmbH
12060881 Positive displacement roots blower noise suppressionNov 12, 21Aug 13, 24Ingersoll-Rand Industrial U.S., Inc.
12060882 Rotary positive displacement pumpMar 26, 21Aug 13, 24Alfa Laval Corporate AB
12055145 Self-positioning volume slide valve for screw compressorJul 20, 22Aug 06, 24Copeland Industrial LP
12049891 Scroll pump having a biasing apparatus for axially movable fixed and orbiting scrolls against each other via first and second pads that formed material from fixed and orbiting scrollsJul 22, 20Jul 30, 24Edwards Limited
12038008 Compressor with injection mechanismSep 23, 20Jul 16, 24Panasonic Intellectual Property Management Co., Ltd.
12031536 Screw compressor and screw rotorOct 18, 21Jul 09, 24Hitachi Industrial Equipment Systems Co., Ltd.
12025124 Electric pumpMar 18, 22Jul 02, 24NIDEC TOSOK CORPORATION
12025126 Scroll compressor and home appliance including the sameNov 11, 22Jul 02, 24Samsung Electronics Co. Ltd.
12025129 Liquid supply type screw compressorJan 28, 21Jul 02, 24Hitachi Industrial Equipment Systems Co., Ltd.
12025131 Torque transfer gear pumpAug 08, 22Jul 02, 24Deere & Company
12018686 Rotary compressorJul 14, 22Jun 25, 24LG Electronics Inc.
12018688 Sealing assembly for a progressive cavity pumpJan 09, 23Jun 25, 24Johnson & Johnson Surgical Vision, Inc.
11999077 Hydraulic system for stripping concrete formsMar 10, 23Jun 04, 24HAWKEYEPEDERSHAAB CONCRETE TECHNOLOGIES, INC.
12000286 Gear wheel having an improved profileJul 30, 20Jun 04, 24SETTIMA MECCANICA S.R.L.
11994031 Rotor unit assemblyNov 03, 21May 28, 24Bae Systems PLC

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0027,495 LIQUID HYDROCARBON FLUID TRANSFER SYSTEMOct 07, 24Jan 23, 25Not available
2021/0086,399 HYDRAULIC SYSTEM FOR STRIPPING CONCRETE FORMSSep 24, 19Mar 25, 21Not available
2020/0392,812 ELECTRIC/HYDRAULIC SAFETY VALVEApr 17, 20Dec 17, 20Not available
2020/0362,857 ROTARY COMPRESSORApr 02, 20Nov 19, 20Not available

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Patents Issued To Date - By Filing Year

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