Electricity: circuit makers and breakers – Cam operates contact or microswitch
Patent
1989-05-22
1990-07-03
Cusick, Ernest G.
Electricity: circuit makers and breakers
Cam operates contact or microswitch
200456, 200432, 200436, 200542, 200538, 200331, H01H 342
Patent
active
049393294
ABSTRACT:
A roller activated switch with an unlimited number of triggering points, a preferred embodiment featuring linear activation by a rod upon the roller. The switch unit receives a moveable member upon the roller in its housing. The moveable member rolls a spring-biased roller to an off center position, thus activating or deactivating contacts upon any movement of the moveable member beyond a small increment. The switch rapidly responds to any reversing movement of the moveable member upon the roller no matter what absolute position the moveable member is in, at the time, thus having an unlimited number of changeable triggering points independent of contact pressure and having an overtravel limited only by the length of the moveable member. This feature results in the switch having the ability to establish its own triggering points. Thus, absolute triggering becomes automatic.
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