Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With housing or support means
Patent
1990-09-28
1992-11-17
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
With housing or support means
361337, 200 50A, H01H 902
Patent
active
051646951
ABSTRACT:
The interlocked contactor includes an interlock mechanism which selectively prevents closure of contactor contacts before a preselected number of operations of the contactor. An armature actuator is connected to the armature to cause a slider bar portion of the interlock mechanism to translate between an interlock open and interlock closed position corresponding to the contact open and contact closed positions. The interlock mechanism is generally mounted to a detachable mounting base which is mounted to a contactor frame. The slider bar is positionally maintained before failure of the assembly by a pair of roller carrying studs, one of which is designed to shear before the predetermined number of contactor operations. An arresting base is pivotally mounted for movement about one of the studs providing adjustable alignment with the slider bar. An adjustment shaft determines the degree of clearance between an interlock tab on the arresting base and an arresting notch on the slider bar. The armature actuator rides within a translating notch of the slider bar. When both studs are in an unfailed condition, they cause the slider bar to only translate as a result of the movement of the armature actuator. On failure of one of the studs, the slider bar both rotates and translates causing the arresting notch to receive the interlock tab when the contactor attempts to close.
REFERENCES:
patent: 4090230 (1978-05-01), Fuller et al.
patent: 4598183 (1986-07-01), Gardner et al.
patent: 4612424 (1986-09-01), Clark et al.
Monson Donald B.
Nocilo Spaso
Donovan Lincoln
Femal Michael J.
Gilroy Hugh M.
Square D Company
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