Patents by Inventor George R. Clark

George R. 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).

  • Vacuum die casting process
    Patent number: 5219409
    Abstract: The process calls for testing and monitoring the pressure levels in different parts of the die casting apparatus during a casting operation, including the die cavity itself and in positive and vacuum pressure lines. The process also includes process steps which cools a vacuum valve adjacent the die cavity and cleans the valve and lines during a casting operation. The process calls for aborting a casting operation at various time during the operation if certain measured parameters are not acceptable.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: June 15, 1993
    Assignee: Outboard Marine Corporation
    Inventors: Dave L. Campbell, George R. Clark, Frank W. Kenik, Russell J. VanRens
  • Golf accessory holder
    Patent number: 4736877
    Abstract: A golf accessory holder is made rectangular from a metal plate. A magnet is attached to the plate with a rivet. Two pole pieces are bent outward from the plate to protect the magnet and to hold a golf tool. Two fingers in the middle of the plate hold a marker disc. Two tee clips hold tees with a stop bent from the plate to align them. Belt clips on the back of the plate are provided to hold the plate to the belt of the golfer.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: April 12, 1988
    Inventor: George R. Clark
  • Lighting fixture or the like
    Patent number: D250910
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: January 23, 1979
    Assignee: Erth-Lite, Inc.
    Inventors: George R. Clark, Gary A. Meeks, Dannie D. Sudduth