TREA

Pumps with means for introducing gas under pressure for ballasting

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Industry

  • CPC
  • F04C2220/50
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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 F04C2220/00Application

Current Industry

F04C2220/50Pumps with means for introducing gas under pressure for ballasting
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Multiple stage vacuum pump
    • Patent number 11,821,427
    • Issue date Nov 21, 2023
    • Edwards Limited
    • Alan Ernest Kinnaird Holbrook
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump having a silencer
    • Patent number 11,274,668
    • Issue date Mar 15, 2022
    • LEYBOLD GMBH
    • Dieter Kolvenbach
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll vacuum pump and method of maintenance including replacing a...
    • Patent number 9,822,780
    • Issue date Nov 21, 2017
    • Agilent Technologies, Inc.
    • John Calhoun
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll vacuum pump and method of maintenance including replacing a...
    • Patent number 9,341,186
    • Issue date May 17, 2016
    • Agilent Technologies, Inc.
    • John Calhoun
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Eccentric pump and method for operation of said pump
    • Patent number 7,186,098
    • Issue date Mar 6, 2007
    • Oerlikon Leybold Vacuum GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Dry compressing vacuum pump having a gas ballast device
    • Patent number 6,776,588
    • Issue date Aug 17, 2004
    • Leybold Vakuum GmbH
    • Lutz Arndt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump
    • Patent number 6,123,516
    • Issue date Sep 26, 2000
    • Leybold Vakuum GmbH
    • Hans Josef Burghard
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas ballast system for a multi-stage positive displacement pump
    • Patent number 6,071,085
    • Issue date Jun 6, 2000
    • Pfeiffer Vacuum GmbH
    • Karl-Heinz Bernhardt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump with a gas ballast device
    • Patent number 5,871,338
    • Issue date Feb 16, 1999
    • Leybold Aktiengesellschaft
    • Thomas Abelen
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-free scroll vacuum pump having a gas ballast part
    • Patent number 5,743,719
    • Issue date Apr 28, 1998
    • Anest Iwata Corporation
    • Shuji Haga
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump with oil separator
    • Patent number 5,697,771
    • Issue date Dec 16, 1997
    • Leybold Aktiengesellschaft
    • Lutz Arndt
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pumps
    • Patent number 5,573,387
    • Issue date Nov 12, 1996
    • The BOC Group plc
    • Alan E. K. Holbrook
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method and apparatus for delivering oil to a multi-stage pump
    • Patent number 5,066,202
    • Issue date Nov 19, 1991
    • Leybold Aktiengesellschaft
    • Hanns-Peter Berges
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary vane pump with ballast port
    • Patent number 4,826,407
    • Issue date May 2, 1989
    • The Utile Engineering Co. Ltd.
    • Robert E. Poole
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Cooling structure for an oil sealed rotary vacuum pump
    • Patent number 4,283,167
    • Issue date Aug 11, 1981
    • Varian Associates, Inc.
    • Benjamin Bassan
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil flow metering structure for oil sealed mechanical vacuum vane pump
    • Patent number 4,276,005
    • Issue date Jun 30, 1981
    • Varian Associates, Inc.
    • Benjamin Bassan
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas ballast for oil sealed mechanical vacuum vane pump
    • Patent number 4,268,230
    • Issue date May 19, 1981
    • Varian Associates, Inc.
    • Benjamin Bassan
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid ring compressor including a calibrated gas input opening
    • Patent number 4,083,658
    • Issue date Apr 11, 1978
    • Siemens Aktiengesellschaft
    • Claus Ramm
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3838950
    • Patent number 3,838,950
    • Issue date Oct 1, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3837764
    • Patent number 3,837,764
    • Issue date Sep 24, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3797971
    • Patent number 3,797,971
    • Issue date Mar 19, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3791780
    • Patent number 3,791,780
    • Issue date Feb 12, 1974
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3644702
    • Patent number 3,644,702
    • Issue date Feb 22, 1972
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    3525578
    • Patent number 3,525,578
    • Issue date Aug 25, 1970
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3399826
    • Patent number 3,399,826
    • Issue date Sep 3, 1968
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3237851
    • Patent number 3,237,851
    • Issue date Mar 1, 1966
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3116872
    • Patent number 3,116,872
    • Issue date Jan 7, 1964
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3042292
    • Patent number 3,042,292
    • Issue date Jul 3, 1962
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2779533
    • Patent number 2,779,533
    • Issue date Jan 29, 1957
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    ROTARY VANE VACUUM PUMP WITH GAS BALLAST ASSEMBLY
    • Publication number 20240077078
    • Publication date Mar 7, 2024
    • Leybold (Tianjin) International Trade Co Ltd
    • Li Ouyang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    MULTIPLE STAGE VACUUM PUMP
    • Publication number 20230076739
    • Publication date Mar 9, 2023
    • Edwards Limited
    • Alan Ernest Kinnaird Holbrook
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Scroll Vacuum Pump and Method of Maintenance Including Replacing a...
    • Publication number 20140322055
    • Publication date Oct 30, 2014
    • John CALHOUN
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vacuum pump
    • Publication number 20060228242
    • Publication date Oct 12, 2006
    • Ritchie Engineering Company, Inc.
    • William G. West
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Vacuum pump
    • Publication number 20060228246
    • Publication date Oct 12, 2006
    • Ritchie Engineering Company, Inc.
    • William G. West
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Eccentric pump and method for operation of said pump
    • Publication number 20050163632
    • Publication date Jul 28, 2005
    • LEYBOLD VAKUUM GmbH
    • Thomas Dreifert
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...