Patents by Inventor Herbert D. Clark

Herbert D. Clark has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Modular occupant restraint system
    Patent number: 4325568
    Abstract: A modular occupant restraint system includes an inflator, a cushion, a container for the cushion, and a cover for the container assembled as a module to a support plate which is releasably mounted on a vehicle steering wheel. The support plate includes pairs of arms extending laterally to opposite edges thereof and a horn blowing switch which is releasably pivotally connected to one arm and releasably secured to the other arm, with the switch being exposed for repair or replacement without disassembly of any of the components of the system. The container includes spaced pairs of arms which engage respective support plate arms and support spoke extensions of the cover which enclose the container arms and support plate arms. The spoke extensions mount horn buttons which close the switch.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: April 20, 1982
    Assignee: General Motors Corporation
    Inventors: Herbert D. Clark, Larry L. Katz, Thomas L. Knoepfle
  • Preloaded ball joint with integrated grease fitting
    Patent number: 3999870
    Abstract: A ball joint has an elastomeric spring for preloading the ball joint and automatic wear take-up. The elastomeric spring includes an integral conical nib which cooperates with an integral nipple portion of the housing cover to provide a grease fitting for admitting lubricant to the interior of the ball joint housing.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: December 28, 1976
    Assignee: General Motors Corporation
    Inventors: Herbert D. Clark, Thomas R. Kushmall, Richard A. Merrifield, Stanley E. Smith
  • Scale control agents
    Patent number: 3985671
    Abstract: A synergistic blend of a polyaminoalkylenephosphonate and a polyquaternary ammonium chloride compound is used as a scale control agent for recirculating water cooling equipment.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: October 12, 1976
    Assignee: Universal Oil Products Company
    Inventor: Herbert D. Clark
  • Corrosion inhibitor compositions
    Patent number: 3979311
    Abstract: A synergistic mixture of an alkynyl cycloalkanol and an N,N'-dicycloalkyl-thiourea is used as an inhibitor in protecting metals from acid attack when cleaning said metals with an acid solution.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: September 7, 1976
    Assignee: Universal Oil Products Company
    Inventor: Herbert D. Clark
  • Corrosive inhibitor compositions
    Patent number: 3969260
    Abstract: A synergistic mixture comprising an alkynyl cycloalkanol and N,N'-dicycloalkyl-thiourea and polyaminomethylenephosphonate is used as an inhibitor in protecting metals from acid attack when cleaning said metals with an acid solution.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: July 13, 1976
    Assignee: Universal Oil Products Company
    Inventor: Herbert D. Clark