Patents by Inventor Donald A. Wolterstorff, Jr.

Donald A. Wolterstorff, Jr. 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).

  • Patent number: 4825515
    Abstract: A safety buckle which is comprised of two, releasable, interlocking portions. One portion has outward flexing lateral arms with tabs connected to their leading ends. Positioned between the lateral arms is a central safety arm which flexes vertically and has a latching hook connected to its leading end. The arms flex slightly to facilitate insertion into the receiving portion. When fully inserted the tabs of the lateral arm protrude into corresponding openings located on opposite sides of the receiving portion whereas the hook of the safety arm locks into a corresponding slot located on the back of the receiving poriton. Release of the interlocked portions is best accomplished by use of two hands; the thumb and first finger of one hand depressing the tabs of the lateral arms, and a finger of the other hand depressing the hook of the safety arm sufficient to permit release.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: May 2, 1989
    Inventor: Donald A. Wolterstorff, Jr.