Patents by Inventor John K. Grainger

John K. Grainger 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).

  • Compressors
    Patent number: 5173021
    Abstract: An engine-exhaust gas driven turbo compressor has a controllable diaphragm valve (13, 15) in a flow path (20, 24) between a compressor delivery port (6) and an atmospheric inlet port (4), this valve being controllable to regulate gas flow via the compressor wheel member (2) to avoid compressor surging when the demand is low and a compressed torroidal wire mesh element (23) is accomodated in an annular region (22) of the compressor housing between the valve (13, 15) and the inlet port to suppress noise resultant upon operation of the valve.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: December 22, 1992
    Assignee: Garrett Automotive Limited
    Inventors: John K. Grainger, David Flaxington