Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1997-02-26
1998-09-29
Gellner, Michael L.
Electricity: circuit makers and breakers
Electric switch details
Indicators
200 5R, 200314, 200315, H01H 926, H01H 900
Patent
active
058135197
ABSTRACT:
A lighted switch apparatus including a slider having two indicator portions spaced apart in the sliding direction, a pair of light-intercepting portions, each preventing light of a lamp from reaching the associated indicator portion located at the side towards which the slider is slid, and an opening formed between the pair of light-intercepting portions to allow transmission of the light from the lamp to the indicator portions of the slider and illuminate the indicator portions. In the lighted switch apparatus, when the slider is in the neutral position, both of the indicator portions are illuminated by the light transmitted through the opening. When the slider is slid in one direction, the indicator portion at the side towards which the slider is slid is prevented from being illuminated by the light-intercepting portion, whereas the other indicator portion is illuminated by the light from the lamp opposing the opening. Accordingly, it is possible to provide a lighted switch apparatus which provides a reliable indication of the switching state, even when used in dark places, by indicating an apparatus to be operated by the switch apparatus, or direction or function thereof, on a slide switch indicator portion, as a result of a switching operation performed when the slider is slid in one direction.
REFERENCES:
patent: 4385221 (1983-05-01), Dorfler
patent: 4975547 (1990-12-01), Nakayama et al.
Alps Electric Co. ,Ltd.
Gellner Michael L.
Hayes Michael J.
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