Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1986-04-30
1987-12-08
Goldberg, E. A.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335198, 335159, 335 13, 200 67DA, H01H 6702
Patent
active
047120797
ABSTRACT:
An auxiliary contact device is taught for utilization with a motor controller or a contactor. A linear cam arrangement is utilized with a rooted flexure arm to cause the contact end of the flexure arm to move in relationship with the linear travel of the stroker carrying the cam surface into a disposition of electrical continuity with a fixed contact. Subsequent linear movement of the stroker in the same direction continues to move the cam surface thereof over an offset in the flexure member after contact has been made. This causes a wiping action between the abutting contact surfaces. The arrangement may be utilized in either the normally open or normally closed disposition. It may be used on multipole devices and the stroker member may be modified for matching a common auxiliary contact assembly arrangement with various kinds of main contactors or controllers or to change timing of contact status change.
REFERENCES:
patent: 2399867 (1946-05-01), Hetherington
patent: 3324431 (1967-06-01), Cataldo et al.
patent: 3435389 (1969-03-01), Mikolic et al.
patent: 3675168 (1972-07-01), Olley
patent: 4220835 (1980-09-01), Storz et al.
patent: 4642433 (1987-02-01), Murata
Donovan Lincoln
Goldberg E. A.
Moran M. J.
Westinghouse Electric Corp.
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