Patents by Inventor William D. Boadwine

William D. Boadwine 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).

  • Deadbolt latch assembly
    Patent number: 5094488
    Abstract: A deadbolt latch assembly includes a cylindrical latch housing containing a pair of ear tabs for engagement with either of a rectangular or circular faceplate assembly, depending upon the requirements of the door in which the latch assembly is to be mounted. The rectangular faceplate assembly includes a backing plate for rotary engagement with the ear tube, while the circular faceplate assembly includes a pair of elongated slots for slidably engaging the ear tabs and a groove for accepting a retainer ring which holds the ear tabs in place.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: March 10, 1992
    Assignee: Medeco Security Locks, Inc.
    Inventors: William D. Boadwine, James M. Marshall