Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1997-05-06
1999-05-25
Luebke, Renee S.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335 1, 335 6, 335132, 340638, H01H 7312
Patent
active
059072679
ABSTRACT:
Photoelectric reflective object sensors are mounted in an exteriorly mounted auxiliary switch case to detect a member on a movable contact assembly of the contactor to produce logic level output signals indicative of the operational state of the contactor electromagnet. One or a pair of photoelectric sensors are used in a side mounted auxiliary switch to detect the contactor movable contact assembly in the energized or de-energized position, or en route between the two positions. A single photoelectric sensor is used in a top adder auxiliary switch to detect if the movable contact assembly is or is not in the extended (de-energized) position. The auxiliary switches provided logic level output signals directly usable with microprocessor based controllers.
REFERENCES:
patent: 3436497 (1969-04-01), Mading
patent: 4032735 (1977-06-01), Butterworth
patent: 4309683 (1982-01-01), Grunert et al.
patent: 4760364 (1988-07-01), Ostby
patent: 5198789 (1993-03-01), Taylor
patent: 5424900 (1995-06-01), Kiiskinen et al.
Reid Scott A.
Richards, Jr. Francis S.
Barrera Raymond
Eaton Corporation
Luebke Renee S.
Vande Zande Larry G.
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