Safety gate limit switch using Hall effect transducer

Details Safety gate limit switch using Hall effect transducer Safety gate limit switch using Hall effect transducer

1987-03-12

1989-03-14

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307113, 361179, 361180, 361181, 340679, 340552, H01L 2982

Patent

active

048126748

ABSTRACT:
A proximity switch has at least three Hall effect magnetic field sensitive transducers mounted in a transducer housing and has at least two magnets mounted in a magnet housing. The transucers produce logic signals, and a logic circuit responsive to these logic signals activates an electrical switch only when the magnets are in a proper position relative to the transducers. The electrical switch may be used to control a machine, and the machine is not activated until the proximity switch is activated.

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