Patents by Inventor Richard R. DeBolt

Richard R. DeBolt 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).

  • Spark plug shield and boot seal assembly
    Patent number: 4671586
    Abstract: A rotationally interlocked heat shield and spark plug boot seal assembly with internal air flow cooling passages that also provide fluid drains to keep the boot seal dry. The shield doubles as a boot seal removal tool for service and grounds to the cylinder head instead of the spark plug giving good feel when engaging the spark plug clip. Corona and dielectric puncture is reduced by grounding the shield and coating the internal diameter of the shield with a suitable conductive layer of material.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: June 9, 1987
    Assignee: General Motors Corporation
    Inventor: Richard R. DeBolt
  • Valve spring damper
    Patent number: 4470383
    Abstract: A valve spring damper has a split ring, to frictionally engage the coils of the valve return spring for a valve, and integral radial extending load carrying feet against which one end of the return spring abuts, the surface of each foot opposite the spring being provided with a semi-spherical embossment in order for the feet to accommodate to a support surface that may be normal or inclined relative to the reciprocating axis of the poppet valve.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: September 11, 1984
    Assignee: General Motors Corporation
    Inventor: Richard R. DeBolt