Patents by Inventor Donald C. Siegla

Donald C. Siegla 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).

  • Valve lift adjusting device
    Patent number: 4249488
    Abstract: In an internal combustion engine having a rocker arm operated intake valve, there is provided a valve lift adjusting device that adjusts the fulcrum of the rocker arm between a full-lift position producing full valve lift and a partial-lift position producing partial intake valve lift. The valve lift adjusting device includes a selector member which selectively serves as a lift stop determining the full-lift position of the fulcrum, and alternatively, permits the fulcrum to engage another lift stop to determine the partial-lift position.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: February 10, 1981
    Assignee: General Motors Corporation
    Inventor: Donald C. Siegla