Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Plural independently operable switches
Patent
1992-01-10
1993-06-01
Dononvan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Plural independently operable switches
200 50C, H01H 920
Patent
active
052163989
ABSTRACT:
A pair of closed contacts having moving contacts (27A), (27B) and fixed contacts (25A), (26A), (25B), (26B) are provided in a mutual locking device (3) and excitation circuits of two electromagnetic contactors which are inversely connected to respective closed contacts to effect electrical interlocking. The moving contacts (27A), (27B) are held by respective levers (36A), (36B) interlocked with driven members (5A), (5B) to be driven by corresponding moving contact supports of the electromagnetic contactors and opened when the electromagnetic contactor closes. Thus, electrical interlocking may be simultaneously effected using a mutual locking device for mechanically preventing two electromagnetic contactors reversibly connected from simultaneously closing.
REFERENCES:
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patent: 3592985 (1971-07-01), Arneberg et al.
patent: 4513181 (1985-04-01), Boysen et al.
patent: 4544810 (1985-10-01), Butterworth
patent: 4659884 (1987-04-01), Wollenhaupt
patent: 4689714 (1987-08-01), Eschermann et al.
patent: 4876418 (1989-10-01), Fournier
patent: 5045647 (1991-09-01), Kato
Dononvan Lincoln
Fuji Electric & Co., Ltd.
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