Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1976-07-28
1977-08-23
Truhe, J. V.
Electricity: circuit makers and breakers
Electric switch details
Indicators
200 6102, 250229, H01H 916
Patent
active
040442136
ABSTRACT:
A push-button sensor switch for controlling and indicating the output of an integrally mounted sensor element is disclosed. The switch includes a frame having a contact stack mounted thereto and which is under the control of a reciprocating plunger extending therefrom. A hollow push-button head housing is attached to the end of the plunger for reciprocal movement therewith. A signal surface member is mounted to the frame and extends into the housing and is visible from a window at the end of the housing. A light sensitive resistor sensor is mounted within a recess in the body of the signal surface member and is therefore located a given fixed distance from the contact stack. A pair of shutters are pivotally mounted within the housing adjacent the window and are engaged by the signal surface member to rotate in response to relative movement of the housing with respect to the signal surface, thereby to alternately conceal and expose the sensor. The output terminals of the sensor are coupled to a pair of contacts on the contact stack. The movement of the housing and therefore the shutters controls the output of the sensor, and the shutters and the signal surface function to provide a visual indication of the output state of the sensor including aliphanumeric indicia thereof.
REFERENCES:
patent: 3538332 (1970-11-01), Gilbert
patent: 3715548 (1973-02-01), Schadow
patent: 3855959 (1974-12-01), Hinze
International Telephone and Telegraph Corporation
Michals William J.
Raden James B.
Tone D. A.
Truhe J. V.
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