TREA

with dissimilar tooth forms

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Industry

  • CPC
  • F04C18/20
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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 F04C18/00Rotary-piston pumps specially adapted for elastic fluids

Current Industry

F04C18/20with dissimilar tooth forms
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Rotor pair for a compression block of a screw machine
    • Patent number 12,352,266
    • Issue date Jul 8, 2025
    • KAESER KOMPRESSOREN SE
    • Gerald Weih
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotor assembly, compressor and air conditioner
    • Patent number 12,188,472
    • Issue date Jan 7, 2025
    • Gree Electric Appliances, Inc. of Zhuhai
    • Hua Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Complex screw rotors having multiple helical profiles joined by a c...
    • Patent number 12,110,888
    • Issue date Oct 8, 2024
    • Industrial Technologies and Services, LLC
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Complex screw rotors having multiple helical profiles joined by a c...
    • Patent number 12,078,169
    • Issue date Sep 3, 2024
    • Industrial Technologies and Services, LLC
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid-feeding rotary-screw compressor
    • Patent number 11,873,817
    • Issue date Jan 16, 2024
    • Hitachi Industrial Equipment Systems Co., Ltd.
    • Takeshi Tsuchiya
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compressor with male and female rotors
    • Patent number 11,725,658
    • Issue date Aug 15, 2023
    • Johnson Controls Air Conditioning and Refrigeration (Wuxi) Co., Ltd.
    • Haijun Li
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Complex screw rotors
    • Patent number 11,644,034
    • Issue date May 9, 2023
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Liquid-injected screw compressor
    • Patent number 11,313,370
    • Issue date Apr 26, 2022
    • Hitachi Industrial Equipment Systems Co., Ltd.
    • Masahiko Takano
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotor pair for a compression block of a screw machine
    • Patent number 11,248,606
    • Issue date Feb 15, 2022
    • KAESER Kompressoren SE
    • Gerald Weih
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-cooled screw compressor
    • Patent number 11,009,025
    • Issue date May 18, 2021
    • Hitachi Industrial Equipment Systems Co., Ltd.
    • Hirotaka Kameya
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Complex screw rotors
    • Patent number 10,975,867
    • Issue date Apr 13, 2021
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Oil-flooded screw compressor system and method for modifying the same
    • Patent number 10,662,947
    • Issue date May 26, 2020
    • Mayekawa Mfg. Co., Ltd.
    • Yasuaki Endo
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotor pair for a compression block of a screw machine
    • Patent number 10,400,769
    • Issue date Sep 3, 2019
    • KAESER Kompressoren SE
    • Gerald Weih
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compressor with oil shutoff and method
    • Patent number 10,288,070
    • Issue date May 14, 2019
    • Carrier Corporation
    • Masao Akei
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw fluid machine, including male and female rotors
    • Patent number 9,657,735
    • Issue date May 23, 2017
    • Mayekawa Mfg. Co., Ltd.
    • Akira Matsui
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Compressor having outlet with gap to enhance volumetric efficiency
    • Patent number 9,528,516
    • Issue date Dec 27, 2016
    • Sprintex Australasia Pty Ltd
    • Jude Benedict Upton
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Rotor profile for a screw compressor
    • Patent number 8,246,333
    • Issue date Aug 21, 2012
    • Kyungwon Machinery Co., Ltd.
    • Man Sig Ju
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    External axis rotary piston compressor
    • Patent number 4,464,102
    • Issue date Aug 7, 1984
    • Wankel GmbH
    • Dankwart Eiermann
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary compressor
    • Patent number 4,457,680
    • Issue date Jul 3, 1984
    • Win W. Paget
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3545895
    • Patent number 3,545,895
    • Issue date Dec 8, 1970
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3417915
    • Patent number 3,417,915
    • Issue date Dec 24, 1968
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    3066851
    • Patent number 3,066,851
    • Issue date Dec 4, 1962
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2956735
    • Patent number 2,956,735
    • Issue date Oct 18, 1960
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2939628
    • Patent number 2,939,628
    • Issue date Jun 7, 1960
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2856120
    • Patent number 2,856,120
    • Issue date Oct 14, 1958
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2829925
    • Patent number 2,829,925
    • Issue date Apr 8, 1958
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    2776086
    • Patent number 2,776,086
    • Issue date Jan 1, 1957
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    2698130
    • Patent number 2,698,130
    • Issue date Dec 28, 1954
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2690869
    • Patent number 2,690,869
    • Issue date Oct 5, 1954
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    2665057
    • Patent number 2,665,057
    • Issue date Jan 5, 1954
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20240426298
    • Publication date Dec 26, 2024
    • Industrial Technologies and Services, LLC
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE
    • Publication number 20240175436
    • Publication date May 30, 2024
    • KAESER KOMPRESSOREN SE
    • Gerald Weih
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20230272797
    • Publication date Aug 31, 2023
    • Gardner Denver, Inc.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTOR PAIR FOR A COMPRESSION BLOCK OF A SCREW MACHINE
    • Publication number 20220136504
    • Publication date May 5, 2022
    • KAESER KOMPRESSOREN SE
    • Gerald Weih
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    A SCREW COMPRESSOR WITH MALE AND FEMALE ROTORS
    • Publication number 20210372401
    • Publication date Dec 2, 2021
    • JOHNSON CONTROLS AIR CONDITIONING AND REFRIGERATION (WUXI) CO., LTD.
    • Haijun Li
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20210231122
    • Publication date Jul 29, 2021
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Liquid-Injected Screw Compressor
    • Publication number 20200386231
    • Publication date Dec 10, 2020
    • HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    • Masahiko TAKANO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Rotor Pair for a Compression Block of a Screw Machine
    • Publication number 20200040894
    • Publication date Feb 6, 2020
    • KAESER KOMPRESSOREN SE
    • Gerald Weih
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Assembly of Screws for a Screw Compressor for a Utility Vehicle
    • Publication number 20190241169
    • Publication date Aug 8, 2019
    • Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    • Gilles HEBRARD
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    COMPLEX SCREW ROTORS
    • Publication number 20180258934
    • Publication date Sep 13, 2018
    • GARDNER DENVER, INC.
    • Luke Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OIL-FLOODED SCREW COMPRESSOR SYSTEM AND METHOD FOR MODIFYING THE SAME
    • Publication number 20180023571
    • Publication date Jan 25, 2018
    • Mayekawa Mfg. Co., Ltd.
    • Yasuaki ENDO
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Screw Compressor with Oil Shutoff and Method
    • Publication number 20170356448
    • Publication date Dec 14, 2017
    • Carrier Corporation
    • Masao Akei
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Screw Compressor
    • Publication number 20170122318
    • Publication date May 4, 2017
    • Carrier Corporation
    • Amit Vaidya
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Compressor
    • Publication number 20120093671
    • Publication date Apr 19, 2012
    • Sprintex Australasia Pty. Ltd.
    • Jude Benedict Upton
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    ROTOR PROFILE FOR A SCREW COMPRESSOR
    • Publication number 20100086428
    • Publication date Apr 8, 2010
    • KYUNGWON MACHINERY CO., LTD.
    • Man Sig JU
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...