F04C 2/107

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Description

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


Subclass 2/107: 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 of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12258961 Fault rectification method for a progressive cavity pump of a conveyor device for conveying viscous building materialsAug 27, 21Mar 25, 25J. Wagner GmbH
12252976 Systems and methods for positive displacement motor diagnostics and failure predictionMar 28, 22Mar 18, 25Saudi Arabian Oil Company
12234824 Eccentric screw pump with a modular design with a compressible stator lining to adjust for wear and/or improve sealingJun 01, 21Feb 25, 25NETZSCH Pumpen & Systeme GmbH
12233388 Liquid polymer or chemical activation system using a submersible actuatorFeb 01, 21Feb 25, 25Not available
12215689 Eccentric screw pump with a pressure chamber between an elastomeric stator portion and a casingNov 19, 20Feb 04, 25GRUNDFOS HOLDING A/S
12152587 Mud motor or progressive cavity pump with varying pitch and taperMay 14, 20Nov 26, 24Dowell -- A Division of Schlumberger Technology Corporation
12152588 Free-mold stator for a progressing cavity pumpMay 26, 23Nov 26, 24GRANT PRIDECO, INC.
12146492 Helical trochoidal rotary machines with improved solids handlingJan 06, 22Nov 19, 24Rotoliptic Technologies Incorporated
12140136 Surface driven downhole pump systemMar 01, 23Nov 12, 24Saudi Arabian Oil Company
12140144 Mud motor rotor with core and shellSep 26, 23Nov 12, 24Dowell -- A Division of Schlumberger Technology Corporation
12129848 Disposable pump cartridgeMay 12, 21Oct 29, 24Johnson & Johnson Surgical Vision, Inc.
12129851 Eccentric screw pump with working engagement and idle engagement and method for controlling the eccentric screw pumpNov 30, 22Oct 29, 24VOGELSANG GMBH & CO. KG
12117004 Progressive cavity pumpSep 20, 23Oct 15, 24PROTEC CO., LTD.
12117005 Cartridge system and eccentric screw pumpAug 11, 21Oct 15, 24VISCOTEC PUMPEN—U. DOSIERTECHNIK GMBH
12110892 System and methodology comprising composite stator for low flow electric submersible progressive cavity pumpAug 20, 21Oct 08, 24Schlumberger Technology Corporation
12084975 High modulus liners in PDM stators with diameter reliefs compensating for rotor tiltOct 06, 23Sep 10, 24Abaco Drilling Technologies LLC
12018687 Rotor unit and eccentric screw pumpNov 10, 21Jun 25, 24VISCOTEC PUMPEN-U. DOSIERTECHNIK GMBH
12018688 Sealing assembly for a progressive cavity pumpJan 09, 23Jun 25, 24Johnson & Johnson Surgical Vision, Inc.
11988208 Sealing in helical trochoidal rotary machinesOct 07, 22May 21, 24Rotoliptic Technologies Incorporated
11913312 Intelligent oil extraction system using all-metal screw pumpOct 29, 19Feb 27, 24WUXI HENGXIN BEISHI TECHNOLOGY CO., LTD

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0035,109 DISPOSABLE PUMP CARTRIDGEOct 09, 24Jan 30, 25Not available
2025/0027,369 POSITIVE DISPLACEMENT FLUID MOTOR AND ASSOCIATED METHODOct 04, 24Jan 23, 25Not available
2025/0020,025 POSITIVE DISPLACEMENT FLUID MOTOR AND ASSOCIATED METHODJul 11, 23Jan 16, 25Not available
2025/0012,276 ECCENTRIC SCREW PUMPJul 02, 24Jan 09, 25Not available
2024/0426,214 ROTOR TILT COMPENSATION IN PDM STATORSSep 09, 24Dec 26, 24Not available
2024/0392,779 FREE-MOLD STATOR FOR A PROGRESSING CAVITY PUMPMay 26, 23Nov 28, 24Not available
2024/0392,783 CLAMPING SYSTEM FOR A PROGRESSING CAVITY PUMPMay 26, 23Nov 28, 24Not available
2024/0360,829 INTERNAL GEAR MACHINEJul 20, 22Oct 31, 24HYDRAULIK NORD TECHNOLOGIES GMBH
2024/0280,099 Sealing In Helical Trochoidal Rotary MachinesApr 18, 24Aug 22, 24Not available
2024/0247,655 MODULAR STATOR FOR PROGRESSIVE CAVITY DEVICESJan 11, 24Jul 25, 24Not available
2024/0167,475 RUBBER COMPOUND WITH FIBER REINFORCEMENTJan 30, 24May 23, 24Not available
2024/0125,321 UNIAXIAL ECCENTRIC SCREW PUMPJun 29, 20Apr 18, 24Not available
2024/0117,844 PIN COUPLING FOR CONNECTING A ROTARY DRIVE TO A PROGRESSIVE-CAVITY PUMPOct 05, 22Apr 11, 24Not available
2024/0093,686 Axial Load In Helical Trochoidal Rotary MachinesSep 20, 23Mar 21, 24Not available
2024/0044,219 REDUCTION OF EQUIVALENT CIRCULATING DENSITY IN WELL OPERATIONSAug 03, 22Feb 08, 24Not available
2024/0044,251 HIGH MODULUS LINERS IN PDM STATORS WITH DIAMETER RELIEFS COMPENSATING FOR ROTOR TILTOct 06, 23Feb 08, 24Not available
2024/0044,330 ROTOR FOR AN ECCENTRIC SCREW PUMP AND METHOD FOR THE MANUFACTURE THEREOFOct 20, 23Feb 08, 24VOGELSANG GMBH & CO. KG
2023/0417,242 Rotary Machines With Teardrop-Shaped RotorsJul 02, 23Dec 28, 23Not available
2023/0400,021 HYDRAULIC PUMPJul 26, 23Dec 14, 23Ree Automotive Ltd
2022/0074,410 SCREW COMPRESSOR WITH A SHUNT-ENHANCED COMPRESSION AND PULSATION TRAP (SECAPT)Sep 08, 20Mar 10, 22Hi-Bar Blowers Inc.

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