Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1992-09-25
1994-03-15
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335 78, 341 31, H01H 8300
Patent
active
052949001
ABSTRACT:
A switch assembly has an actuator assembly which is operable to actuate switches between first and second conditions. A pushbutton is movable from an initial position through an intermediate position to a fully actuated position to affect operation of the actuator assembly to actuate the switches from the first condition to the second condition. As the pushbutton moves to the fully actuated position, a holding coil is energized to hold the actuator assembly in the actuated condition to maintain the switches in the second condition upon a releasing of the pushbutton. A control circuit is activated by optical sensors to prevent energization of the holding coil until the pushbutton has been moved from the initial position to the fully actuated position. The control circuit maintains the holding coil energized until the pushbutton has been released for movement back to its initial position and then operated for a second time to its fully actuated position. Therefore, partial actuation or teasing of the pushbutton does not cause the holding coil to become energized or de-energized. A remote switch is actuatable to effect de-energization of the holding coil.
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Malekzadeh Ali
Mohabbatizadeh Akbar
Donovan Lincoln
Eaton Corporation
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