Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1984-07-06
1986-01-28
Marcus, Stephen
Electricity: circuit makers and breakers
Liquid contact
Time delay
74577M, H01H 1962
Patent
active
045673390
ABSTRACT:
The present invention relates to a control device incorporating at least one electrical switch which can be actuated abruptly, for closing and opening, by a single rotary control cam.
The control device incorporates a control cam 1 possessing a plurality of identical abrupt-drop notches 3 separated respectively by solid parts 4 identical to one another. A lever system is arranged between this cam 1 and the reversing switch 2. It comprises a first and a second lever 21 and 22 each of which pivots about a fixed axle 15 and the noses 31, 32 of which interact with the profile of the cam 1 under the action of a spring 8. A link 20 is articulated, on the one hand, at 21a on the first lever 21 and, on the other hand, at 22a on the second lever 22. It possesses a relief part 23 interacting with the reversing switch 22. When the nose 31 drops into a notch 3, with the nose 32 remaining on a solid part 4, the reversing switch is released, 6a-6b being closed and 6c-6d being open. When the nose 32 in turn drops into a notch 3, the reversing switch 2 is actuated abruptly, 6a-6b being opened and 6c-6d being closed. When the two noses 31, 32 climb approximately together along solid parts 4, the reversing switch 2 retains the preceding position up to the following drop of the nose 31 into a notch 3.
REFERENCES:
patent: 3156123 (1964-11-01), Denny
patent: 3190977 (1965-06-01), Harris
patent: 3257535 (1966-06-01), Sallin et al.
patent: 3515831 (1970-06-01), Church et al.
Adams Bruce L.
Burns Robert E.
Kidorf Renee S.
Lobato Emmanuel J.
Marcus Stephen
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