Patents by Inventor Charles E. Francis

Charles E. Francis 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).

  • Strengthening door jamb
    Patent number: 5024475
    Abstract: A strengthening device for use with a deadbolt lock and includes a planar metal anchor plate having a hole with an anchor pocket welded to the plate at the hole. The anchor plate is installed between the door jamb and the framing or door stud. The anchor pocket extends into the hole in the door jamb through which the deadbolt is insertible. When the deadbolt is installed in the door, the bolt will extend into the anchor plate. In another embodiment, a metal bolt guide is inserted from the outer side of the door jamb into the anchor pocket.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: June 18, 1991
    Assignee: John D. Gassett
    Inventor: Charles E. Francis
  • Keeper for deadbolt locks
    Patent number: 4865370
    Abstract: A strengthening device for use with a deadbolt lock and includes a planar metal anchor plate having a hole with an anchor pocket welded to the plate at the hole. The anchor plate is installed between the door jamb and the framing or door stud. The anchor pocket extends into the hole in the door jamb through which the deadbolt is insertible. When the deadbolt is installed in the door, the bolt will extend into the anchor plate. In another embodiment, a metal bolt guide is inserted from the outer side of the door jamb into the anchor pocket.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: September 12, 1989
    Assignee: John D. Gassett
    Inventor: Charles E. Francis