TREA

Internal leakage control

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Industry

  • CPC
  • F04C15/0046
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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00

Current Industry

F04C15/0046Internal leakage control
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Screw pump or machine with a liner that bends and/or pivots with th...
    • Patent number 12,012,957
    • Issue date Jun 18, 2024
    • CIRCOR PUMPS NORTH AMERICA, LLC
    • Axel Jaeschke
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Gerotor pump with pressure equalization
    • Patent number 11,703,049
    • Issue date Jul 18, 2023
    • Hanon Systems Bad Homburg GmbH
    • Tilo Schaefer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic motor with anti-cogging features
    • Patent number 11,493,018
    • Issue date Nov 8, 2022
    • Parker-Hannifin Corporation
    • Kyle J. Merrill
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Gerotor pump and method of making pressure equalization in a geroto...
    • Patent number 11,428,221
    • Issue date Aug 30, 2022
    • Hanon Systems Bad Homburg GmbH
    • Tilo Schaefer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pressure balancing system for a fluid pump
    • Patent number 11,168,683
    • Issue date Nov 9, 2021
    • Exponential Technologies, Inc.
    • Kristjan Gottfried
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic motor disc valve optimization
    • Patent number 10,982,669
    • Issue date Apr 20, 2021
    • Parker-Hannifin Corporation
    • Todd Allen Link
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Screw pump
    • Patent number 10,975,864
    • Issue date Apr 13, 2021
    • LEISTRITZ PUMPEN GMBH
    • Oliver Trossmann
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Electric oil pump, in particular for a motor vehicle
    • Patent number 10,533,550
    • Issue date Jan 14, 2020
    • Brose Fahrzeugteile GmbH & Co. KG, Wuerzburg
    • Uwe Klippert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump having through-shaft bearing weepage control
    • Patent number 10,408,212
    • Issue date Sep 10, 2019
    • CIRCOR PUMPS NORTH AMERICA, LLC
    • Justin A. Craig
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Motor-pump unit
    • Patent number 10,060,432
    • Issue date Aug 28, 2018
    • Eckerle Industrie Elektronik GmbH
    • Reinhard Pippes
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump apparatus and marine vessel propelling machine
    • Patent number 9,885,355
    • Issue date Feb 6, 2018
    • Showa Corporation
    • Takahiko Saito
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Pump device and ship propulsion machine
    • Patent number 9,638,187
    • Issue date May 2, 2017
    • Showa Corporation
    • Takahiko Saito
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Electric oil pump
    • Patent number 9,581,159
    • Issue date Feb 28, 2017
    • KYB Corporation
    • Masamichi Sugihara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Progressive cavity pump with uncoupled natural frequency
    • Patent number 9,506,468
    • Issue date Nov 29, 2016
    • PCM TECHNOLOGIES
    • Christian Bratu
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Bi-rotational hydraulic motor with optional case drain
    • Patent number 8,459,972
    • Issue date Jun 11, 2013
    • MP Pumps, Inc.
    • Steven Buell
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane pump for continuously variable transmission
    • Patent number 7,314,359
    • Issue date Jan 1, 2008
    • Kayaba Industry Co., Ltd.
    • Tomoyuki Fujita
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vane-type hydraulic motor
    • Patent number 7,273,360
    • Issue date Sep 25, 2007
    • Ebara Corporation
    • Masao Shinoda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic pump utilizing floating shafts
    • Patent number 6,716,011
    • Issue date Apr 6, 2004
    • Monarch Hydraulics, Inc.
    • Srinivas Bhagavatula
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic pump utilizing floating shafts
    • Patent number 6,692,244
    • Issue date Feb 17, 2004
    • Monarch Hydraulics, Inc.
    • Srinivas Bhagavatula
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pump
    • Patent number 6,413,064
    • Issue date Jul 2, 2002
    • Luk Fahrzeug-Hydraulik GmbH & Co. KG
    • Willi Parsch
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gear pump
    • Patent number 5,253,988
    • Issue date Oct 19, 1993
    • Maag Pump Systems AG
    • Alfred K. Hunziker
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary hydraulic vane device having a shaf seal
    • Patent number 5,201,647
    • Issue date Apr 13, 1993
    • Vickers, Incorporated
    • Albin J. Niemiec
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Method for providing pump drip collector
    • Patent number 5,168,626
    • Issue date Dec 8, 1992
    • General Motors Corporation
    • Ronald L. Dorski
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Drain for internal gear hydraulic device
    • Patent number 4,881,880
    • Issue date Nov 21, 1989
    • Parker-Hannifin Corporation
    • Andrew N. Dlugokecki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Device having a sealed control opening and an orbiting valve
    • Patent number 4,877,383
    • Issue date Oct 31, 1989
    • Hollis N. White
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil pump for automatic transmission with effective sealing arrangement
    • Patent number 4,850,832
    • Issue date Jul 25, 1989
    • Nissan Motor Co., Ltd.
    • Kazuya Murota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil pump for transaxle
    • Patent number 4,838,764
    • Issue date Jun 13, 1989
    • Nissan Motor Co., Ltd.
    • Kazuya Murota
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Positive displacement machine, more particularly pump, and method f...
    • Patent number 4,789,315
    • Issue date Dec 6, 1988
    • Gutag Innovations AG
    • Kurt Guettinger
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Gear pump with leakage fluid intermittently communicated to expandi...
    • Patent number 4,770,617
    • Issue date Sep 13, 1988
    • Barmag AG
    • Siegfried Hertell
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary hydrostatic machine with heated center housing port
    • Patent number 4,626,181
    • Issue date Dec 2, 1986
    • Mannesmann-Rexroth GmbH
    • Jorg Dantlgraber
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    UNIAXIAL ECCENTRIC SCREW PUMP
    • Publication number 20240125321
    • Publication date Apr 18, 2024
    • HEISHIN Ltd.
    • Nobuhisa SUHARA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW PUMP OR MACHINE
    • Publication number 20230013936
    • Publication date Jan 19, 2023
    • Circor Pumps North America, LLC
    • Axel Jaeschke
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Gerotor Pump
    • Publication number 20220349401
    • Publication date Nov 3, 2022
    • Hanon Systems Bad Homburg GmbH
    • Tilo SCHAEFER
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDRAULIC MOTOR DISC VALVE OPTIMIZATION
    • Publication number 20190136856
    • Publication date May 9, 2019
    • Parker-Hannifin Corporation
    • Todd Allen Link
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW PUMP
    • Publication number 20190085844
    • Publication date Mar 21, 2019
    • LEISTRITZ PUMPEN GMBH
    • Oliver TROSSMANN
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VARIABLE DISPLACEMENT VANE PUMP
    • Publication number 20150252802
    • Publication date Sep 10, 2015
    • Hitachi Automotive Systems Steering, Ltd.
    • Hiroki IMANAGA
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PROGRESSIVE CAVITY PUMP
    • Publication number 20150139842
    • Publication date May 21, 2015
    • Christian Bratu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ELECTRIC OIL PUMP
    • Publication number 20140169995
    • Publication date Jun 19, 2014
    • KAYABA INDUSTRY CO., LTD.
    • Masamichi Sugihara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GEARED POSITIVE-DISPLACEMENT PUMP WITH SELF-COMPENSATING GEAR CHAMBER
    • Publication number 20140105776
    • Publication date Apr 17, 2014
    • FLUID-O-TECH S.R.L.
    • Dario Fiorello Gabriele Ellero
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Bi-Rotational Hydraulic Motor With Optional Case Drain
    • Publication number 20110206549
    • Publication date Aug 25, 2011
    • Steven Buell
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vane-type hydraulic motor
    • Publication number 20060104847
    • Publication date May 18, 2006
    • Masao Shinoda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vane pump for continuously variable transmission
    • Publication number 20060088433
    • Publication date Apr 27, 2006
    • Tomoyuki Fujita
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Hydraulic pump utilizing floating shafts
    • Publication number 20030194342
    • Publication date Oct 16, 2003
    • Srinivas Bhagavatula
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Hydraulic pump utilizing floating shafts
    • Publication number 20030044298
    • Publication date Mar 6, 2003
    • Srinivas Bhagavatula
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Rotary vane pump
    • Publication number 20020110459
    • Publication date Aug 15, 2002
    • LuK Fahrzeug-Hydraulik GmbH & Co. Kg
    • Willi Parsch
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...