Patents by Inventor Geoffrey R. Bennett

Geoffrey R. Bennett 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).

  • Mountings for keys
    Patent number: 4366688
    Abstract: A key rotatably supported in a mounting and capable of being brought into engagement with a lock is held in the correct orientation for engaging the lock by being locked to the mounting by a retractable sleeve. Only when the mounting is brought into engagement with the lock does a portion of the lock engage the sleeve and push it back relative to the mounting to free the key for rotation. The mounting may be on a moveable part of a machine guard with the lock on a fixed part and controlling operation of the machine.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: January 4, 1983
    Assignee: Unimax Switch Limited
    Inventor: Geoffrey R. Bennett