Patents Assigned to Compact Energy Limited
  • Demolition device and method of preparing same
    Patent number: 4635554
    Abstract: An underwater demolition device has magnets for holding the device on a ferrous structure and a plunger which, once the device has been planted, is held in a retracted position by the structure on which the device is held. If the device is moved from the structure, the plunger protrudes beyond the magnets. A visual indication is provided immediately upon arming of the device if the plunger is then in its protruding position and a timer is provided to prevent detonation until a predetermined delay has elapsed from arming.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: January 13, 1987
    Assignee: Compact Energy Limited
    Inventor: Malcolm G. Palmer