Patents by Inventor Timothy Z. Fisher

Timothy Z. Fisher 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).

  • Fuel injection valve assembly for reciprocating gas engine
    Patent number: 4365756
    Abstract: A fuel injection valve assembly is provided for use in a reciprocating gas engine. The valve assembly comprises a valve cage, a replaceable valve cartridge, a keeper ring, and an external spring. The valve cartridge is replaceable without the necessity of removing the valve cage from the engine.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: December 28, 1982
    Inventor: Timothy Z. Fisher