Patents by Inventor William Fairman

William Fairman 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: 3958367
    Abstract: A safety device for use in combination with elongated coil springs substantially balancing the door weight for ease of opening and adapted to urge said door toward an open position after partial opening movement. The safety device includes an elongated flexible member extending longitudinally substantially axially through the elongated spring with ends thereof beyond the spring ends as with one end fixedly mounted adjacent a fixed end of the spring and the other end thereof resiliently mounted adjacent the other end of the spring whereby separate portions of the spring will be retained on the elongated flexible member in the event of breakage of the coil spring.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: May 25, 1976
    Inventor: William Fairman