Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1980-01-07
1981-07-07
Shepperd, John W.
Electricity: circuit makers and breakers
Electric switch details
Indicators
200311, H01H 900
Patent
active
042776651
ABSTRACT:
A push-button electrical switch is described having an illuminated window showing the status of the switch. The window includes the words "ON" and "OFF" in differing but complementary colors and two filter members also of differing but the same complementary colors are rotated selectively into the light path to the window in order to illuminate either the word "ON" or "OFF".
REFERENCES:
patent: 1285753 (1918-11-01), Lowenstein
patent: 3215036 (1965-11-01), Kirkconnell et al.
patent: 3287827 (1966-11-01), Lippman
patent: 3601566 (1971-08-01), Hansen
patent: 3715548 (1973-02-01), Schadon
patent: 3780248 (1973-12-01), Martin
patent: 3895204 (1975-07-01), Lewis
patent: 3969609 (1976-07-01), Wanner et al.
patent: 4031849 (1977-06-01), Mehta
patent: 4129766 (1978-12-01), Miyata et al.
patent: 4131777 (1978-12-01), Bailey et al.
Akazawa Michitada
Kondo Shiro
Alps Electric Co. ,Ltd.
Dunne Gerard F.
Shepperd John W.
Shoup Guy W.
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