Patents by Inventor William Findlay Stewart

William Findlay Stewart 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).

  • Reciprocating piston engines having piston oil cooling
    Patent number: 4010718
    Abstract: A reciprocating piston engine in which oil cooling is provided by a hollow oil jet assembly located accurately by a location tool and pressed into position in a bore in the crankcase of the engine. Accurately drilled and aligned jet passages are formed in the assembly which is then fitted into position with good accuracy to enable accurate direction of a jet or jets of cooling oil to a desired point or points on the underside of a piston.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: March 8, 1977
    Assignee: Perkins Engines Limited
    Inventor: William Findlay Stewart