Patents by Inventor Edgar G. Lizotte

Edgar G. Lizotte 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).

  • Permutation type lock control assembly
    Patent number: 4848116
    Abstract: A timing gear arrangement, an idler gear arrangement and a code gear arrangement are mounted in parallel with each other such that the timing gears are in mesh with the idler gears which are in mesh with the code gears. Push buttons are associated with each of the idler gears on the idler gear arrangement, and each push button is connected to a slider plate which will cause its associated code gear to rotate a predetermined distance when the push button is depressed. Further, the code gear arrangement is removably mounted in the lock control assembly.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: July 18, 1989
    Assignee: Ilco Unican Inc.
    Inventor: Edgar G. Lizotte
  • Door locking system
    Patent number: 4637237
    Abstract: A combination lock system on a narrow stile door having selective operation through a drive mechanism including a slide for retraction of the latch bolt operated by the combination lock and a manual control or key operation of the latch bolt. The key operation provides an override of the combination lock operation.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: January 20, 1987
    Assignee: Simplex Security Systems, Inc.
    Inventors: Edward J. Witkoski, Edgar G. Lizotte