Patents by Inventor William F. Hemminger

William F. Hemminger 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).

  • Film take-up reel
    Patent number: 4015793
    Abstract: A film take-up reel having a longitudinal slot through the surface of said reel and a rotatable tightening shaft cooperating with said slot to secure the film to the reel. The tightening shaft has an effective diameter substantially less than that of the take-up reel and is located adjacent the slot through the surface of the reel. The tightening shaft also defines a slot entirely therethrough and cooperates with the slot in the take-up reel to impart several convolutions in the film to secure the film to the reel.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: April 5, 1977
    Assignee: Pandick Press, Inc.
    Inventor: William F. Hemminger