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Charles L. Gray

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  • Pickney, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Methods for safe operation of hydraulic hybrid vehicles with over-c...
    • Patent number 9,346,347
    • Issue date May 24, 2016
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Method for assembling a bent-axis pump/motor
    • Patent number 9,121,395
    • Issue date Sep 1, 2015
    • The United States of America, as represented by the Administator of the U.S....
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Low temperature dual fuel combustion utilizing diesel and methanol...
    • Patent number 8,985,089
    • Issue date Mar 24, 2015
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Modular hydraulic hybrid drivetrain
    • Patent number 8,893,491
    • Issue date Nov 25, 2014
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic hybrid vehicle method of safe operation
    • Patent number 8,646,565
    • Issue date Feb 11, 2014
    • The United States of America as represented by the Administrator of the U. S....
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    On-demand power brake system and method
    • Patent number 8,522,546
    • Issue date Sep 3, 2013
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Efficiency turbocharged engine system with bottoming cycle, and met...
    • Patent number 8,407,999
    • Issue date Apr 2, 2013
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Efficient bypass valve for multi-stage turbocharging system
    • Patent number 8,387,385
    • Issue date Mar 5, 2013
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Methods of operating a series hybrid vehicle
    • Patent number 8,381,851
    • Issue date Feb 26, 2013
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic circuit and manifold with multifunction valve
    • Patent number 8,375,982
    • Issue date Feb 19, 2013
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Variable length bent-axis pump/motor
    • Patent number 8,356,547
    • Issue date Jan 22, 2013
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High-efficiency, large angle, variable displacement hydraulic pump/...
    • Patent number 7,677,871
    • Issue date Mar 16, 2010
    • The United States of America, as represented by the Administrator of the U.S....
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    HCCI engine with combustion-tailoring chamber
    • Patent number 6,910,459
    • Issue date Jun 28, 2005
    • The United States of America as represented by the Administration of the U.S....
    • Ruonan Sun
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Piston-in-piston variable compression ratio engine
    • Patent number 6,752,105
    • Issue date Jun 22, 2004
    • The United States of America as represented by the Administrator of the Unite...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Hydraulic hybrid vehicle
    • Patent number 6,719,080
    • Issue date Apr 13, 2004
    • The United States of America as represented by the Administrator of the Envir...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Controlled temperature combustion engine
    • Patent number 6,651,432
    • Issue date Nov 25, 2003
    • The United States of America as represented by the Administrator of the Envir...
    • Charles L. Gray
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fully-controlled, free-piston engine
    • Patent number 6,652,247
    • Issue date Nov 25, 2003
    • The United States of America as represented by the Administrator of the Unite...
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Hydraulic hybrid accumulator shut-off valve
    • Patent number 6,619,325
    • Issue date Sep 16, 2003
    • The United States of America as represented by the Administrator of the U. S....
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Fully-controlled, free-piston engine
    • Patent number 6,582,204
    • Issue date Jun 24, 2003
    • The United States of America as represented by the Administrator of the U.S....
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Controlled homogeneous-charge, compression-ignition engine
    • Patent number 6,578,533
    • Issue date Jun 17, 2003
    • The United States of America as represented by the Administrator of the U. S....
    • Charles L. Gray
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Low emission, diesel-cycle engine
    • Patent number 6,470,682
    • Issue date Oct 29, 2002
    • The United States of America as represented by the Administrator of the Unite...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    High efficiency, air bottoming engine
    • Patent number 6,415,607
    • Issue date Jul 9, 2002
    • The United States of America as represented by the Administrator of the U.S....
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Pumped EGR system
    • Patent number 6,386,154
    • Issue date May 14, 2002
    • The United States of America as represented by the Administrator of the Envir...
    • Karl H. Hellman
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Low emission, diesel-cycle engine
    • Patent number 6,301,888
    • Issue date Oct 16, 2001
    • The United States of America as represented by the Administrator of the Envir...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    High efficiency, air bottoming engine
    • Patent number 6,301,891
    • Issue date Oct 16, 2001
    • The United States of America as represented by the Environmental Protection A...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    High efficiency, air bottoming engine
    • Patent number 6,216,462
    • Issue date Apr 17, 2001
    • The United States of America as represented by the Administrator of the Envir...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Dual-cylinder expander engine and combustion method with two expans...
    • Patent number 6,202,416
    • Issue date Mar 20, 2001
    • The United States of America as represented by the Administrator of the U. S....
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Torque balanced opposed-piston engine
    • Patent number 6,189,493
    • Issue date Feb 20, 2001
    • The United States of America as represented by the Administrator of the Unite...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Phase change heat engine
    • Patent number 6,186,126
    • Issue date Feb 13, 2001
    • The United States of America as represented by the Administrator of the Unite...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Fast valve and actuator
    • Patent number 6,170,524
    • Issue date Jan 9, 2001
    • The United States of America as represented by the Administrator of the Envir...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Ball and Socket Joint Retention for a Hydraulic Pump/Motor
    • Publication number 20150089781
    • Publication date Apr 2, 2015
    • Daniel W. Barba
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Design and Method for Assembling a Bent-Axis Pump/Motor
    • Publication number 20150082631
    • Publication date Mar 26, 2015
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Integrated Hydraulic Accumulator Dual Shut-Off Valve
    • Publication number 20140311576
    • Publication date Oct 23, 2014
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Radial hydraulic motor for a hydraulic hybrid vehicle
    • Publication number 20140271244
    • Publication date Sep 18, 2014
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Methods of Operating a Series Hybrid Vehicle
    • Publication number 20140200754
    • Publication date Jul 17, 2014
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Low Temperature Dual Fuel Combustion Utilizing Diesel and Methanol...
    • Publication number 20140026853
    • Publication date Jan 30, 2014
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    Methods for Safe Operation of Hydraulic Hybrid Vehicles with Over-C...
    • Publication number 20130014499
    • Publication date Jan 17, 2013
    • U.S. ENVIRONMENTAL PROTECTION AGENCY
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    High efficiency alcohol fuel engine
    • Publication number 20080230041
    • Publication date Sep 25, 2008
    • Matthew J. Brusslar
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Fuel injector nozzle
    • Publication number 20080142622
    • Publication date Jun 19, 2008
    • Charles L. Gray
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Engine-off power steering system
    • Publication number 20080135325
    • Publication date Jun 12, 2008
    • Mark Spencer Stuhldreher
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Hydraulic hybrid vehicle method of safe operation
    • Publication number 20080093152
    • Publication date Apr 24, 2008
    • Government of the United States of America, as represented by the Administrat...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Safe over-center pump/motor
    • Publication number 20080080985
    • Publication date Apr 3, 2008
    • Government of the U.S.A as represented by the Administrator of the U.S. E.P.A
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Quiet fluid supply valve
    • Publication number 20080078286
    • Publication date Apr 3, 2008
    • Government of the United States of America, as represented by the Administrat...
    • Charles L. Gray
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    Hydraulic hybrid vehicle with integrated hydraulic drive module and...
    • Publication number 20070278027
    • Publication date Dec 6, 2007
    • Government of USA, as represented by the Administ. of the U.S. Environmental...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Fluid bearing and method of operation
    • Publication number 20070253649
    • Publication date Nov 1, 2007
    • Gov't of the USA, as represented by the Administra tor of the U.S. Environmen...
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    High-pressure fuel intensifier system
    • Publication number 20070039590
    • Publication date Feb 22, 2007
    • Gov. of the U.S.A., as represented by the Administrator of the U.S. Envir. Pr...
    • Charles L. Gray
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    Methods of operation for controlled temperature combustion engines...
    • Publication number 20060191513
    • Publication date Aug 31, 2006
    • Charles L. Gray
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    High-efficiency, large angle, variable displacement hydraulic pump/...
    • Publication number 20060051216
    • Publication date Mar 9, 2006
    • Government of the United States as represented by the Administrator of the U....
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Efficient bypass valve for multi-stage turbocharging system
    • Publication number 20060042246
    • Publication date Mar 2, 2006
    • Government of the United States of America, as represented by the Administrat...
    • Charles L. Gray
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Independent displacement opposing pump/motors and method of operation
    • Publication number 20060021813
    • Publication date Feb 2, 2006
    • Gov. of the U.S.A, as rep. by the Administrator of the U.S. Environmental Pro...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Vehicle drive-train including a clutchless transmission, and method...
    • Publication number 20050241437
    • Publication date Nov 3, 2005
    • Gov't of U.S.A., as represented by Administrator of the U.S. Environmental Pr...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Large angle sliding valve plate pump/motor
    • Publication number 20050238517
    • Publication date Oct 27, 2005
    • Gov. of the USA, as represented by the Admin. of the U.S. Environmental Prote...
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Hydraulic machine having pressure equalization
    • Publication number 20050226748
    • Publication date Oct 13, 2005
    • Gov. of U.S.A., as repr. by Administrator of U.S. Environmental Protection Ag...
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Opposing pump/motors
    • Publication number 20050207921
    • Publication date Sep 22, 2005
    • Gov't of the U.S.A. as represented by the Adm. of the U.S. Environmental Prot...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Lightweight low permeation piston-in-sleeve accumulator
    • Publication number 20050194054
    • Publication date Sep 8, 2005
    • Andrew J. Moskalik
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Efficient pump/motor with reduced energy loss
    • Publication number 20050193888
    • Publication date Sep 8, 2005
    • Gov. of the U.S.A., as represented by the Adm. of the U.S. Environmental Prot...
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Hybrid powertrain motor vehicle with homogenous charge compression...
    • Publication number 20050173169
    • Publication date Aug 11, 2005
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Hydraulic actuator control valve
    • Publication number 20050163639
    • Publication date Jul 28, 2005
    • Government of the United States of America, as rep. by the Admin. of the US E...
    • Charles L. Gray
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Multi-crankshaft, variable-displacement engine
    • Publication number 20050150228
    • Publication date Jul 14, 2005
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Methods of operating a series hybrid vehicle
    • Publication number 20050145426
    • Publication date Jul 7, 2005
    • GOV. of the U.S.A. as represented by the Administrator of the U.S. environmen...
    • Charles L. Gray
    • B60 - VEHICLES IN GENERAL