Patents by Inventor Bernard G. Richards

Bernard G. Richards 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).

  • Oil cooled piston rings
    Patent number: 4026197
    Abstract: An improved reciprocating engine wherein the pistons are provided with hollow compression rings having a fluid inlet and a fluid outlet and an elongated fluid flow path extending therebetween. A path is established through various parts of the engine including the piston for directing a coolant, usually oil, through the inlet to the interior of the piston ring to cool the ring during engine operation.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: May 31, 1977
    Assignee: Caterpillar Tractor Co.
    Inventors: Robert A. Lapke, Bernard G. Richards