Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1989-07-06
1992-06-09
Cusick, Ernest G.
Electricity: circuit makers and breakers
Electric switch details
Actuators
200310, 200313, H01H 312, H01H 900
Patent
active
051209209
ABSTRACT:
A key top includes an indicator member formed of a transparent or translucent synthetic resin and having a projection corresponding to a contour of an indicating portion, an outer member formed of an opaque synthetic resin and molded to cover an outer surface of the indicator member except a top surface of the projection, a light transmitting colored coating printed on the top surface of the projection, and a light shielding coating printed on a part of the light transmitting colored coating which corresponds to a closed portion of the indicating portion such as the center of the letter "O".
REFERENCES:
patent: 3482542 (1969-12-01), Mace
patent: 4163883 (1979-08-01), Boulanger
patent: 4778966 (1988-10-01), Obata et al.
Alps Electric Co. ,Ltd.
Cusick Ernest G.
Heid David W.
Kivlin B. Noel
Shoup Guy W.
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