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David A. Renfroe

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  • Fayetteville, AR, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Buckle for preventing inertial de-buckling
    • Patent number 9,009,932
    • Issue date Apr 21, 2015
    • The Engineering Institute, LLC
    • Chandrashekhar Thorbole
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Impact resistant seat belt buckle
    • Patent number 8,108,976
    • Issue date Feb 7, 2012
    • Chandrashekhar K. Thorbole
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Flexible cable lever arm steering system apparatus and method
    • Patent number 7,073,822
    • Issue date Jul 11, 2006
    • David A. Renfroe
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Modular patient support system
    • Patent number 7,028,351
    • Issue date Apr 18, 2006
    • Calzark
    • Russell Frieder
    • B64 - AIRCRAFT AVIATION COSMONAUTICS
  • Information Patent Grant

    Land vehicle with lever steering
    • Patent number 6,709,013
    • Issue date Mar 23, 2004
    • University of Arkansas
    • David A. Renfroe
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Cable steering system
    • Patent number 5,931,244
    • Issue date Aug 3, 1999
    • Board of Trustee of University of Arkansas
    • David A. Renfroe
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Lever steering system
    • Patent number 5,653,304
    • Issue date Aug 5, 1997
    • University of Arkansas, N.A.
    • David A. Renfroe
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Hydrostatic manual vehicle steering system
    • Patent number 5,435,407
    • Issue date Jul 25, 1995
    • University of Arkansas
    • David A. Renfroe
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

  • Information Patent Application

    BUCKLE FOR PREVENTING INERTIAL DE-BUCKLING
    • Publication number 20130125355
    • Publication date May 23, 2013
    • THE ENGINEERING INSTITUTE, LLC
    • Chandrashekhar THORBOLE
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    Impact resistant seat belt buckle
    • Publication number 20080313871
    • Publication date Dec 25, 2008
    • Chandrashekhar K. Thorbole
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Application

    Land vehicle with lever steering
    • Publication number 20020135174
    • Publication date Sep 26, 2002
    • David A. Renfroe
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS