Patents Assigned to William A. Williams
  • Patent number: 3959997
    Abstract: A pick-proof lock system and method for locking a door, window, or other closure which includes a first movable barrier such as a door mounted to be closed into a second related barrier such as a frame. This pick-proof lock system comprises coded locking means remotely located from the public region outside of the closure barriers with a transportable key movable along a route from the public region into the remote locking means and carrier means for moving the key along said route which may include multiple intersecting path segments with blocking means preventing access from the public region to the remotely located coded locking means, the carrier means acting cooperatively with said barrier means for moving the key long said route.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: June 1, 1976
    Assignees: James E. Williams, William A. Williams
    Inventor: James E. Williams