Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1992-12-23
1994-12-13
Recla, Henry J.
Electricity: circuit makers and breakers
Electric switch details
Indicators
200313, 200314, 200520, H01H 900
Patent
active
053731328
ABSTRACT:
A switch apparatus includes a cap having an axially extending flange for mounting in an opening of a cover plate and a releasably attached switch carrier. A signal light element is slidably mounted inside the cap and has a hollow, cylindrical head portion. Extending from a rear surface of the head portion are a pair of guides and a push rod. A sleeve threadably engages threaded exterior surface of a side wall a switch carrier, a forward end of the sleeve and the flange of the cap engaging opposite sides of the cover plate and retaining the switch apparatus in the opening. Provided at the rearward end of the switch carrier are board holders which retain a rear circuit board on which is mounted a microswitch actuated by the push rod. Positioned in the head portion of the signal light element is an annular light conductor and a front circuit board which has light-emitting semiconductors integrated thereon. Light from the light-emitting semiconductors is conducted by the annular light conductor to the peripheral edge of a transparent plate closing off the forward end of the head portion. The light-emitting semiconductors are regulated by photo semiconductors in dependence on the ambient light, so that the light ring lights up brighter the brighter the ambient light is. A flexible multi-wire conductor connects the front circuit board with the rear circuit board whereby actuation of the microswitch activates the light-emitting semiconductors.
REFERENCES:
patent: 3467802 (1969-09-01), Martin
patent: 4283758 (1981-08-01), Irving
patent: 4499352 (1985-02-01), Fujita et al.
patent: 4683359, Wojtanek
patent: 4758701 (1988-07-01), Nagel
patent: 5099095 (1992-03-01), Torma et al.
Achermann Peter
Granicher Reto
Inventio AG
Recla Henry J.
Walczak David J.
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