Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches
Patent
1992-10-22
1994-08-02
Scott, J. R.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
73517R, 200 6145M, 200 615, H01H 3500, G01P 1500
Patent
active
053349636
ABSTRACT:
A switch device which includes a magnet movable within a passageway. A wire coil is provided about the passageway such that, as the magnet moves into the coil, a current is induced, thereby providing a signal pulse. The switch can be utilized for sensing changes in inertia, with a stopper opposing movement of the magnet unless the magnet imparts sufficient force against the spring biased stopper to allow the magnet to move along the passageway. The biasing force of the stopper can be adjusted to adjust the amount of force, acceleration or deceleration required for actuating the switch. The switch may also be utilized without the spring-biased stopper, with the magnet preloaded with a spring or weight, such that the switch automatically operates upon removal of a safety pin.
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Scott J. R.
The University of Alabama in Huntsville
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