Abstract: The force sensing switch comprising a housing and a movable member movable relative to the housing upon having a predetermined force applied thereagainst by an adjacent moving structure when the structure becomes misaligned, the movable member engaging circuitry within the housing which will produce an alarm signal and will stop the adjacent structure from moving.
Type:
Grant
Filed:
February 28, 2002
Date of Patent:
May 4, 2004
Inventors:
Norman Victor Wheat, Jonathan Norman Wheat