using lift valves

Patents Grantslast 30 patents

  • Information Patent Grant

    Displacement type expansion machine and fluid machine

    • Patent number 7,419,369
    • Issue date Sep 2, 2008
    • Daikin Industries, Ltd.
    • Katsumi Sakitani
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Vane rotary expansion engine

    • Patent number 7,347,675
    • Issue date Mar 25, 2008
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroshi Hasegawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • 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

    Rotary positive displacement fluid machine

    • Patent number 6,226,986
    • Issue date May 8, 2001
    • Driver Technology Ltd.
    • Ronald William Driver
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    High-power rotary engine with varaiable compression ratio

    • Patent number 5,622,149
    • Issue date Apr 22, 1997
    • David B. Wittry
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rotary engine with glow ignition system

    • Patent number 5,537,973
    • Issue date Jul 23, 1996
    • David B. Wittry
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rotary engine with variable compression ratio

    • Patent number 5,433,179
    • Issue date Jul 18, 1995
    • David B. Wittry
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Rotary engine with variable displacement

    • Patent number 5,168,846
    • Issue date Dec 8, 1992
    • Marius A. Paul
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Heat transfer systems

    • Patent number 4,831,827
    • Issue date May 23, 1989
    • Ward; Robert Maurice
    • Ronald W. Driver
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Rotary machine

    • Patent number 4,666,383
    • Issue date May 19, 1987
    • Edward C. Mendler
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    3637332

    • Patent number 3,637,332
    • Issue date Jan 25, 1972
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    2845777

    • Patent number 2,845,777
    • Issue date Aug 5, 1958
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    2480818

    • Patent number 2,480,818
    • Issue date Aug 30, 1949
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    2139856

    • Patent number 2,139,856
    • Issue date Dec 13, 1938
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    2077733

    • Patent number 2,077,733
    • Issue date Apr 20, 1937
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

  • Information Patent Application

    EXPANDER AND HEAT PUMP USING THE EXPANDER

    • Publication number 20090282845
    • Publication date Nov 19, 2009
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroshi Hasegawa
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    EXPANDER AND HEAT PUMP USING THE EXPANDER

    • Publication number 20090241581
    • Publication date Oct 1, 2009
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroshi Hasegawa
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Volume expander and fluid machine

    • Publication number 20060165542
    • Publication date Jul 27, 2006
    • Katsumi Sakitani
    • 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

    Vane rotary expansion engine

    • Publication number 20050158199
    • Publication date Jul 21, 2005
    • Matsushita Electric Industrial Co Ltd.
    • Hiroshi Hasegawa
    • 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