using sliding valves

Patents Grantslast 30 patents

  • Information Patent Grant

    Screw expander with variable volume controlled by the pressure rati...

    • Patent number 12,055,042
    • Issue date Aug 6, 2024
    • Bitzer Kuehlmaschinenbau GmbH
    • Marcus Blumhardt
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Screw expander with adjustable valve

    • Patent number 10,883,368
    • Issue date Jan 5, 2021
    • Fu Sheng Industrial Co. Ltd.
    • Yao-Chung Liu
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Screw compressor having a volume ratio being adjusted by end faces...

    • Patent number 10,030,653
    • Issue date Jul 24, 2018
    • Bitzer Kuehlmaschinenbau GmbH
    • Dominic Kienzle
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary piston and cylinder devices

    • Patent number 9,057,268
    • Issue date Jun 16, 2015
    • Lontra Limited
    • Stephen Francis Lindsey
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Electric machine having rotor and stator configurations

    • Patent number 8,022,586
    • Issue date Sep 20, 2011
    • The Texas A&M University System
    • Mark T. Holtzapple
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Electric machine having a high-torque switched reluctance motor

    • Patent number 7,663,283
    • Issue date Feb 16, 2010
    • The Texas A&M University System
    • Mark T. Holtzapple
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Toroidal engine with variable displacement volume

    • Patent number 7,341,041
    • Issue date Mar 11, 2008
    • VGT Technologies Inc.
    • Rudolf R. Pekau
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary positive displacement machine

    • Patent number 7,231,894
    • Issue date Jun 19, 2007
    • E.A. Technical Services Limited
    • Ronald William Driver
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Gerotor apparatus for a quasi-isothermal brayton cycle engine

    • Patent number 7,008,200
    • Issue date Mar 7, 2006
    • The Texas A&M University System
    • Mark T. Holtzapple
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Rotary vane motor

    • Patent number 6,886,527
    • Issue date May 3, 2005
    • Rare Industries Inc.
    • Aron Regev
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Gear and a fluid machine with a pair of gears

    • Patent number 6,709,250
    • Issue date Mar 23, 2004
    • Wei Xiong
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Control device in a helical screw rotor machine for regulating the...

    • Patent number 4,455,131
    • Issue date Jun 19, 1984
    • Svenska Rotor Maskiner Aktiebolag
    • Olaf Werner-Larsen
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Rotary screw machine with two intermeshing gate rotors and two inde...

    • Patent number 4,261,691
    • Issue date Apr 14, 1981
    • Hall-Thermotank Products Limited
    • Bernard Zimmern
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Combined pressure matching and capacity control slide valve assembl...

    • Patent number 4,222,716
    • Issue date Sep 16, 1980
    • Dunham-Bush, Inc.
    • David N. Shaw
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Screw compressors

    • Patent number 4,074,957
    • Issue date Feb 21, 1978
    • Monovis B. V.
    • Robert John Clarke
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3756753

    • Patent number 3,756,753
    • Issue date Sep 4, 1973
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3432089

    • Patent number 3,432,089
    • Issue date Mar 11, 1969
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3088659

    • Patent number 3,088,659
    • Issue date May 7, 1963
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    3045447

    • Patent number 3,045,447
    • Issue date Jul 24, 1962
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2248639

    • Patent number 2,248,639
    • Issue date Jul 8, 1941
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

  • Information Patent Application

    MODULAR ROTARY ENGINE

    • Publication number 20220381145
    • Publication date Dec 1, 2022
    • ELLIS F WRIGHT
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ELECTRIC MACHINE HAVING A HIGH-TORQUE SWITCHED RELUCTANCE MOTOR

    • Publication number 20100213786
    • Publication date Aug 26, 2010
    • THE TEXAS A&M UNIVERSITY SYSTEM
    • Mark T. Holtzapple
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    ROTARY PISTON AND CYLINDER DEVICES

    • Publication number 20090120406
    • Publication date May 14, 2009
    • Stephen Francis Lindsey
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Engine And An Apparatus For Providing Forced Aspiration To An Engine

    • Publication number 20070277524
    • Publication date Dec 6, 2007
    • EPICAM LIMITED
    • Anthony Osborne Dye
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    High-Torque Switched Reluctance Motor

    • Publication number 20060279155
    • Publication date Dec 14, 2006
    • The Texas A&M University System
    • Mark T. Holtzapple
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Gerotor apparatus for a quasi-isothermal Brayton cycle engine

    • Publication number 20060239849
    • Publication date Oct 26, 2006
    • Mark T. Heltzapple
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Toroidal engine with variable displacement volume

    • Publication number 20060086336
    • Publication date Apr 27, 2006
    • Rudolf R. Pekau
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    High efficiency hot gas vane actuator

    • Publication number 20060075989
    • Publication date Apr 13, 2006
    • Vanderbilt University
    • Eric J. Barth
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Rotary positive displacement machine

    • Publication number 20050000214
    • Publication date Jan 6, 2005
    • Ronald William Driver
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Rotary vane motor

    • Publication number 20040187803
    • Publication date Sep 30, 2004
    • Aron Regev
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Gerotor apparatus for a quasi-isothermal brayton cycle engine

    • Publication number 20030215345
    • Publication date Nov 20, 2003
    • Texas A&M University Systems
    • Mark T. Holtzapple
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES