Patents by Inventor Fred W. Ryan

Fred W. Ryan 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).

  • Internal oil seal for piston
    Patent number: 4068563
    Abstract: A seal for use within the interior portions of a piston, primarily on a diesel engine which has a pressurized oil supply which is forced upwardly through the connecting rod and sprayed on to the upper portion of the piston. The seal substantially closes the area between the connecting rod and the interior sidewalls of the piston skirt. The oil is thus restricted in flow, building up pressure within the top portion of the piston and causing the oil to contact the upper interior portion for cooling the piston and further, forced to lubricate the bushings on the wrist pin.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: January 17, 1978
    Inventors: Fred W. Ryan, Robert J. Webber
  • Internal oil seal for piston
    Patent number: 3992980
    Abstract: A seal for use within the interior portions of a piston, primarily on a diesel engine which has a pressurized oil supply which is forced upwardly through the connecting rod and sprayed on to the upper portion of the piston. The seal substantially closes the area between the connecting rod and the interior sidewalls of the piston skirt. The oil is thus restricted in flow, building up pressure within the top portion of the piston and causing the oil to contact the upper interior portion for cooling the piston and further, forced to lubricate the bushings on the wrist pin.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: November 23, 1976
    Inventors: Fred W. Ryan, Robert J. Webber