Patents by Inventor Charles M. Buchholtz

Charles M. Buchholtz 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).

  • Fail-safe disc brake having a slack adjuster mechanism
    Patent number: 3995722
    Abstract: A fail-safe actuator for a disc brake system. A housing contains a reciprocating piston having a retracted position, a spring which urges the piston forward away from its retracted position, and means for retracting the piston against the urging of the spring. An expansible linkage, which connects the piston to the friction element of the brake is expanded in response to retraction of the piston, thereby maintaining a uniform spring expansion per brake application regardless of friction element wear.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: December 7, 1976
    Assignee: Abex Corporation
    Inventors: Roger D. Jones, Charles M. Buchholtz