Patents by Inventor Peter S. B. Cummins

Peter S. B. Cummins 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).

  • Security system for safes
    Patent number: 4649833
    Abstract: A safe security system which includes a key operated time delay lock (10) and a separate key switch (9) thereby requiring two individual keys for the opening of the safe, a dye marking device (20) within the safe, a door switch (23), and an electrical interlock circuit operating to activate the marking device if the door switch is operated before the key switch, or if a predetermined sequence of operation of the key switch and time lock is not followed.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: March 17, 1987
    Inventor: Peter S. B. Cummins