Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1986-06-23
1988-04-05
Recla, Henry J.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 681, 200153J, 200 6BB, 200159A, H01H 1356, H01H 1360
Patent
active
047360810
ABSTRACT:
An alternate or push-push switch mechanism effects movement of a contact actuator (28) from one stable position to another stable position upon a single depression of a pushbutton operator (34,38,40,42,44). Actuator movement causes a spring loaded plunger (28a) to traverse a surface of a normally open contactor (54) to effect momentary contact closure with a stationary contact (46a) during the movement of the actuator and plunger. The duration of contact closure may be controlled or modified by providing a cam on the contactor surface for engagement by the plunger. Two such switches (20a,20b) are employed in series in a control circuit for a manufacturing machine (M) whereby both switches must be operated by a human operator of the machine within the closure duration interval of the contacts of the individual switches to complete the control circuit for the machine.
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Cusick Ernest G.
Eaton Corporation
Recla Henry J.
Rowe D. A.
Vande Zande L. G.
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