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John Hugh Kerr

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  • Kingston, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    One-to-one torque coupling
    • Patent number 11,867,238
    • Issue date Jan 9, 2024
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tracked-vehicle regenerative steering differential
    • Patent number 10,730,552
    • Issue date Aug 4, 2020
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    One-to-one torque coupling
    • Patent number 10,704,604
    • Issue date Jul 7, 2020
    • KER-TRAIN HOLDINGS LTD.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Concentric V-groove coupling
    • Patent number 10,113,595
    • Issue date Oct 30, 2018
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Concentric V-groove coupling
    • Patent number 9,732,803
    • Issue date Aug 15, 2017
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Concentric V-groove coupling
    • Patent number 8,764,597
    • Issue date Jul 1, 2014
    • Ker-Train Holdings, Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    All gear infinitely variable transmission
    • Patent number 7,188,719
    • Issue date Mar 13, 2007
    • Ker-Train Holdings, Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    All gear infinitely variable transmission
    • Patent number 6,849,023
    • Issue date Feb 1, 2005
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Power transfer device
    • Patent number 6,766,891
    • Issue date Jul 27, 2004
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Power transfer device
    • Patent number 6,691,847
    • Issue date Feb 17, 2004
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coplanar reverted gear train loop
    • Patent number 6,669,594
    • Issue date Dec 30, 2003
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Rotary pump
    • Patent number 6,637,313
    • Issue date Oct 28, 2003
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Spiral-type coupling
    • Patent number 6,446,776
    • Issue date Sep 10, 2002
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coplanar reverted gear train loop
    • Patent number 6,418,810
    • Issue date Jul 16, 2002
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Full-complement multi-directional coupling
    • Patent number 6,409,001
    • Issue date Jun 25, 2002
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Power transfer device
    • Patent number 6,367,604
    • Issue date Apr 9, 2002
    • Ker-Train Holdings LTD
    • John Hugh Kerr
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Spiral type one-way clutch
    • Patent number 6,129,189
    • Issue date Oct 10, 2000
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Coplanar reverted gear train loop
    • Patent number 6,126,566
    • Issue date Oct 3, 2000
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Automotive accessory drive pulleys incorporating spiral type one-wa...
    • Patent number 5,638,931
    • Issue date Jun 17, 1997
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

  • Information Patent Application

    ONE-TO-ONE TORQUE COUPLING
    • Publication number 20210025457
    • Publication date Jan 28, 2021
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    TRACKED-VEHICLE REGENERATIVE STEERING DIFFERENTIAL
    • Publication number 20180327027
    • Publication date Nov 15, 2018
    • KER-TRAIN HOLDINGS LTD.
    • JOHN HUGH KERR
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Concentric V-Groove Coupling
    • Publication number 20170343053
    • Publication date Nov 30, 2017
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    ONE-TO-ONE TORQUE COUPLING
    • Publication number 20170276180
    • Publication date Sep 28, 2017
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CONCENTRIC V-GROOVE COUPLING
    • Publication number 20150053525
    • Publication date Feb 26, 2015
    • Ker-Train Holdings Ltd.
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CONCENTRIC V-GROOVE COUPLING
    • Publication number 20110061485
    • Publication date Mar 17, 2011
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Power transfer device
    • Publication number 20030196862
    • Publication date Oct 23, 2003
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Coplanar reverted gear train loop
    • Publication number 20020108832
    • Publication date Aug 15, 2002
    • John Hugh Kerr
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Power transfer device
    • Publication number 20020104729
    • Publication date Aug 8, 2002
    • John Hugh Kerr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...