Patents by Inventor Roy McGriff

Roy McGriff 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).

  • Valve grinding tool
    Patent number: 10456887
    Abstract: A tool includes a coupling, an inner adjustment sleeve, and an outer adjustment sleeve. The coupling connects a rotary tool to the inner adjustment sleeve. An adjustable portion of the inner adjustment sleeve is threadedly received in the outer adjustment sleeve. An offset aperture in the free end of the outer adjustment sleeve receives a tip of a valve stem for grinding. An optional cup at the end of the outer adjustment sleeve stabilizes the tool. A grinding bit with a shaft retained in a collet of the rotary tool is contained internally, in a channel, extending through the tool.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 29, 2019
    Assignee: JEFFRO, INC.
    Inventors: Jeffery W. Bright, Roy McGriff
  • Compact pulley puller
    Patent number: 10456896
    Abstract: A compact pulley puller includes a hollow cylindrical barrel with a gland at each end, a hub clamp formed on each gland, a rod and a piston. Each hub clamp grips a particular size hub of a pulley to be removed or installed. The rod of the puller extends against the shaft of a pulley to remove the pulley. To install a pulley, the rod is threadedly secured to the shaft of the pulley, and the rod of the puller is retracted.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: October 29, 2019
    Inventor: Roy McGriff
  • COMPACT PULLEY PULLER
    Publication number: 20190217456
    Abstract: A compact pulley puller includes a hollow cylindrical barrel with a gland at each end, a hub clamp formed on each gland, a rod and a piston. Each hub clamp grips a particular size hub of a pulley to be removed or installed. The rod of the puller extends against the shaft of a pulley to remove the pulley. To install a pulley, the rod is threadedly secured to the shaft of the pulley, and the rod of the puller is retracted.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 18, 2019
    Inventor: Roy McGriff
  • VALVE GRINDING TOOL
    Publication number: 20190030680
    Abstract: A tool includes a coupling, an inner adjustment sleeve, and an outer adjustment sleeve. The coupling connects a rotary tool to the inner adjustment sleeve. An adjustable portion of the inner adjustment sleeve is threadedly received in the outer adjustment sleeve. An offset aperture in the free end of the outer adjustment sleeve receives a tip of a valve stem for grinding. An optional cup at the end of the outer adjustment sleeve stabilizes the tool. A grinding bit with a shaft retained in a collet of the rotary tool is contained internally, in a channel, extending through the tool.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 31, 2019
    Inventors: Jeffery W. BRIGHT, Roy McGriff