Patents by Inventor Wayne W. Ballard

Wayne W. Ballard 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: 4875351
    Abstract: An electronic time lock for bank vault doors and the like having a door bolting mechanism including a snubber bar, the time lock including a lock case, an intermediate vertical partition located in said chamber between front and rear walls of the case, the rear wall and intermediate partition having surfaces defining cylindrical guide bores for reciprocating movement of the snubber bar therein. A pair of electric motors are arranged in side-by-side relation on the intermediate partition to drive a blocking member through a pair of drive trains between blocking and release position for blocking the snubber bar against movement to an unlocking position and releasing the snubber bar.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: October 24, 1989
    Assignee: Sargent & Greenleaf, Inc.
    Inventors: Walter R. Evans, Joseph M. Remenicky, Thomas E. Jasper, Wayne W. Ballard