Patents by Inventor Robert J. Deisenroth

Robert J. Deisenroth 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).

  • Closure counterbalance
    Patent number: RE29545
    Abstract: The closure counterbalance is for attachment as a strut between a movable closure which is hingedly fastened to a support structure. The counterbalance includes a pair of tubular members telescopingly connected together in sliding relationship. A compression coil spring within the members urges the members apart. A wooden rod is provided within the tubular members. The wooden rod fixed extends into the spring in sliding relationship therewith to support and guide the spring and prevent the spring from buckling against the inner surface of the tubular members.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: February 21, 1978
    Assignee: Excel Industries, Inc.
    Inventor: Robert J. Deisenroth