Patents by Inventor Christian A. Stoltzfus

Christian A. Stoltzfus 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: 5722114
    Abstract: Invention is directed to a compression spring mechanism, particularly in combination with a fencing system which incorporates a swinging gate. The mechanism, intended to automatically close a released and opened gate, comprises a cylindrical tube, mounted within the gate, a plurality of compression springs aligned end-to-end within the tube, and a spring housing secured to one end of the tube for receiving one of the compression springs. A cable, of predetermined length, passes through the housing and aligned springs and is secured to the spring end most remote from the spring housing. The other end of the cable is secured to a stationary member, such as a post about which the gate pivots. As the gate is opened, the springs are further compressed storing sufficient energy to allow closure of the gate when released.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: March 3, 1998
    Assignee: Quality Fencing & Supply Co.
    Inventors: John K. Lapp, Jr., Christian A. Stoltzfus, Joseph P. Wachter