TREA

Liquid sealing for high-vacuum pumps or for compressors

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Industry

  • CPC
  • F04C27/02
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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 F04C27/00Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Current Industry

F04C27/02Liquid sealing for high-vacuum pumps or for compressors
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum pump system and method for operating a vacuum pump system
    • Patent number 12,140,146
    • Issue date Nov 12, 2024
    • LEYBOLD GMBH
    • Max Pelikan
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Vacuum pump lubricant recovery system returning lubricant from the...
    • Patent number 12,104,597
    • Issue date Oct 1, 2024
    • ATLAS COPCO AIRPOWER N.V.
    • Andries Desiron
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Water-ring vacuum pump including built-in hogging flow path
    • Patent number 11,828,286
    • Issue date Nov 28, 2023
    • VACCOMP CO., LTD.
    • Seok Won Lee
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor with inclined wall surface extending from the dus...
    • Patent number 11,821,423
    • Issue date Nov 21, 2023
    • Hitachi Industrial Equipment Systems Co., Ltd.
    • Yusuke Watabe
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor or vacuum pump device, a liquid return system for such a...
    • Patent number 11,767,847
    • Issue date Sep 26, 2023
    • Atlas Copco Airpower, naamloze vennootschap
    • Luc Colman
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Lubricant receptacle
    • Patent number 11,746,786
    • Issue date Sep 5, 2023
    • LEYBOLD FRANCE S.A.S.
    • Patrick Fournier
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Electric priming pump device
    • Patent number 11,674,516
    • Issue date Jun 13, 2023
    • Joshua J. McPherson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Low pressure sealing liquid entry area in a compressor type liquid...
    • Patent number 11,512,700
    • Issue date Nov 29, 2022
    • GARDNER DENVER NASH LLC
    • Ramesh Balkunge Shenoi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas pump with pressure relief for reducing the starting torque
    • Patent number 11,506,204
    • Issue date Nov 22, 2022
    • Schwabische Huttenwerke Automotive GmbH
    • Uwe Meinig
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor with mechanical seal
    • Patent number 11,306,722
    • Issue date Apr 19, 2022
    • FORUMS US, INC.
    • John Walton
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Vacuum pump system and method for operating a vacuum pump system
    • Patent number 11,286,934
    • Issue date Mar 29, 2022
    • LEYBOLD GMBH
    • Max Pelikan
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Lubrication system for a compressor
    • Patent number 11,209,002
    • Issue date Dec 28, 2021
    • Joy Global Surface Mining Inc
    • Michael D. Lanum
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor
    • Patent number 10,619,636
    • Issue date Apr 14, 2020
    • GEA REFRIGERATION GERMANY GMBH
    • Stefan Losch
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Method for preventing condensate in the oil of an oil-injected comp...
    • Patent number 10,550,844
    • Issue date Feb 4, 2020
    • Atlas Copco Airpower N.V.
    • Joeri Coeckelbergs
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Epitrochoidal type compressor
    • Patent number 10,550,842
    • Issue date Feb 4, 2020
    • Epitrochoidal Compressors Ltd
    • David Walker Garside
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor
    • Patent number 10,451,066
    • Issue date Oct 22, 2019
    • GEA REFRIGERATION GERMANY GMBH
    • Dmytro Zaytsev
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-free screw compressor having atmosphere open hole formed in cas...
    • Patent number 10,309,402
    • Issue date Jun 4, 2019
    • Kobe Steel, Ltd.
    • Yoshio Yano
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-free screw compressor
    • Patent number 10,138,889
    • Issue date Nov 27, 2018
    • Kobe Steel, Ltd.
    • Yoshio Yano
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sealing arrangement, a conveying device having a sealing arrangemen...
    • Patent number 10,036,385
    • Issue date Jul 31, 2018
    • DOVER PUMP SOLUTIONS GROUP (EUROPE) GMBH
    • Rene Triebe
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Liquid ring screw pump functional design
    • Patent number 10,030,654
    • Issue date Jul 24, 2018
    • Jets AS
    • Ole Asgeir Svenheim
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor with back pressure chamber having leakage channel
    • Patent number 9,897,088
    • Issue date Feb 20, 2018
    • Emerson Climate Technologies (Suzhou) Co., Ltd.
    • Xiaogeng Su
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gas pump with a sealing oil groove
    • Patent number 9,546,658
    • Issue date Jan 17, 2017
    • Schwabische Huttenwerke Automotive GmbH
    • Jürgen Bohner
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Pump
    • Patent number 9,334,863
    • Issue date May 10, 2016
    • Edwards Limited
    • Philip John Stephens
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Scroll compressor with thrust sliding surface oiling groove
    • Patent number 9,316,225
    • Issue date Apr 19, 2016
    • Daikin Industries, Ltd.
    • Kenji Nagahara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Multi stage, clam shell vacuum pump
    • Patent number 9,279,426
    • Issue date Mar 8, 2016
    • Edwards Limited
    • Nigel Paul Schofield
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotary vacuum pump with a discharge compensating channel
    • Patent number 9,017,051
    • Issue date Apr 28, 2015
    • Oerlikon Leybold Vacuum GmbH
    • Eric Figoni
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Water injection type screw fluid machine
    • Patent number 8,556,606
    • Issue date Oct 15, 2013
    • Kobe Steel, Ltd.
    • Toru Noguchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Water injection type screw fluid machine
    • Patent number 8,529,234
    • Issue date Sep 10, 2013
    • Kobe Steel, Ltd.
    • Shoji Yoshimura
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compression apparatus
    • Patent number 8,512,019
    • Issue date Aug 20, 2013
    • Kobe Steel, Ltd.
    • Tetsuya Kakiuchi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary vacuum pump with a discharge compensating channel
    • Patent number 8,469,684
    • Issue date Jun 25, 2013
    • Oerlikon Leybold Vacuum GmbH
    • Eric Figoni
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    DRY-COMPRESSION COMPRESSOR AND METHOD FOR OIL SEPARATION FOR A DRY-...
    • Publication number 20240229794
    • Publication date Jul 11, 2024
    • KAESER KOMPRESSOREN SE
    • Dirk SIMROSS
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LIQUID BLADE PUMP
    • Publication number 20230296095
    • Publication date Sep 21, 2023
    • Edwards Limited
    • Paul David Smith
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LIQUID BLADE PUMP
    • Publication number 20230279875
    • Publication date Sep 7, 2023
    • Edwards Limited
    • Paul David Smith
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    A LUBRICANT RECOVERY SYSTEM
    • Publication number 20230122823
    • Publication date Apr 20, 2023
    • Atlas Copco Airpower N.V.
    • Andries Desiron
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SYSTEM AND METHOD FOR OPERATING A VACUUM PUMP SYSTEM
    • Publication number 20230033429
    • Publication date Feb 2, 2023
    • Leybold GmbH
    • Max Pelikan
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMPING SYSTEM HAVING AN OIL-LUBRICATED VACUUM PUMP
    • Publication number 20220235772
    • Publication date Jul 28, 2022
    • Agilent Technologies, Inc.
    • Roberto Carboneri
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LUBRICANT RECEPTACLE
    • Publication number 20220145887
    • Publication date May 12, 2022
    • LEYBOLD FRANCE S.A.S.
    • Patrick Fournier
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR WITH LIQUID INJECTION COOLING
    • Publication number 20210396232
    • Publication date Dec 23, 2021
    • HICOR TECHNOLOGIES, INC.
    • John WALTON
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    IMPROVED LIQUID RING PUMP
    • Publication number 20190277287
    • Publication date Sep 12, 2019
    • Edwards Limited
    • Mark Gordon GLAISTER
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LUBRICATION SYSTEM FOR A COMPRESSOR
    • Publication number 20190072095
    • Publication date Mar 7, 2019
    • Joy Global Surface Mining Inc
    • Michael D. Lanum
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Application

    ROTARY SCREW VACUUM PUMPS
    • Publication number 20180023566
    • Publication date Jan 25, 2018
    • Edwards Limited
    • Nigel Paul Schofield
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL-FREE SCREW COMPRESSOR
    • Publication number 20170306959
    • Publication date Oct 26, 2017
    • Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    • Yoshio YANO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    EPITROCHOIDAL TYPE COMPRESSOR
    • Publication number 20170204857
    • Publication date Jul 20, 2017
    • Epitrochoidal Compressors Ltd.
    • David Walker Garside
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP
    • Publication number 20170204858
    • Publication date Jul 20, 2017
    • Edwards Limited
    • Alan Ernest Kinnaird HOLBROOK
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP
    • Publication number 20170204859
    • Publication date Jul 20, 2017
    • Edwards Limited
    • Alan Ernest Kinnaird HOLBROOK
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL-FREE SCREW COMPRESSOR
    • Publication number 20170016446
    • Publication date Jan 19, 2017
    • Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    • Yoshio YANO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SYSTEM INCLUDING SCROLL PUMP AND SECONDARY PUMPING MECH...
    • Publication number 20160348679
    • Publication date Dec 1, 2016
    • AGILENT TECHNOLOGIES, INC.
    • Ronald J. FORNI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    BRUSHLESS DC COMPRESSOR IN MICRO-MINIATURE FORM
    • Publication number 20160327041
    • Publication date Nov 10, 2016
    • Ching-Ko CHANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    METHOD FOR PREVENTING CONDENSATE IN THE OIL OF AN OIL-INJECTED COMP...
    • Publication number 20160327045
    • Publication date Nov 10, 2016
    • ATLAS COPCO AIRPOWER, N.V.
    • Joeri COECKELBERGS
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR
    • Publication number 20160312779
    • Publication date Oct 27, 2016
    • GEA REFRIGERATION GERMANY GMBH
    • Stefan LOSCH
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR
    • Publication number 20160312778
    • Publication date Oct 27, 2016
    • GEA REFRIGERATION GERMANY GMBH
    • Dmytro ZAYTSEV
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LIQUID RING PUMP PORT MEMBER HAVING ANTI-CAVITATION CONSTRUCTIONS
    • Publication number 20160238008
    • Publication date Aug 18, 2016
    • GARDNER DENVER NASH LLC
    • Douglas Eric Bissell
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    LOW PRESSURE SEALING LIQUID ENTRY AREA IN A COMPRESSOR TYPE LIQUID...
    • Publication number 20160201672
    • Publication date Jul 14, 2016
    • GARDNER DENVER NASH LLC
    • Ramesh Balunge Shenoi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Liquid Ring Screw Pump Functional Design
    • Publication number 20160090982
    • Publication date Mar 31, 2016
    • Jets AS
    • Ole Asgeir Svenheim
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCROLL COMPRESSOR
    • Publication number 20150361980
    • Publication date Dec 17, 2015
    • EMERSON CLIMATE TECHNOLOGIES (SUZHOU) CO., LTD.
    • Xiaogeng SU
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCROLL COMPRESSOR
    • Publication number 20150147214
    • Publication date May 28, 2015
    • DAIKIN INDUSTRIES, LTD.
    • Kenji Nagahara
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Gas Pump With Pressure Relief for Reducing the Starting Torque
    • Publication number 20140199199
    • Publication date Jul 17, 2014
    • SCHWABISCHE HUTTENWERKE AUTOMOTIVE GMBH
    • Uwe Meinig
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Gas Pump With A Sealing Oil Groove
    • Publication number 20140161645
    • Publication date Jun 12, 2014
    • SCHWABISCHE HUTTENWERKE AUTOMOTIVE GMBH
    • Jürgen Bohner
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTARY VACUUM PUMP WITH A DISCHARGE COMPENSATING CHANNEL
    • Publication number 20130251578
    • Publication date Sep 26, 2013
    • OERLIKON LEYBOLD VACUUM GMBH
    • Eric FIGONI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMP
    • Publication number 20120251368
    • Publication date Oct 4, 2012
    • EDWARDS LIMITED
    • Philip John Stephens
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...