Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1979-02-05
1980-09-30
Pollard, Steven M.
Electricity: circuit makers and breakers
Electric switch details
Indicators
116202, H01H 900
Patent
active
042257662
ABSTRACT:
A manually actuatable sliding short-stroke switch is provided with a light conducting cap attached to the sliding piece and a touch surface above the cap. A means for illuminating the touch surface is provided, and the light conducting cap is covered on its surface with a layer impermeable to light except for a selected area of the touch surface and a light instance area for receiving light from the source. The light conducting cap and the touch surface provide a means for actuating the switch substantially unaffected by fatigue due to repeated use and which can be illuminated without transferring light to adjacent touch surfaces.
REFERENCES:
patent: 3440426 (1969-04-01), Murphy et al.
patent: 3601567 (1971-08-01), Shah
patent: 3619591 (1971-11-01), Korski
patent: 3767879 (1973-10-01), Nicol
patent: 3811025 (1974-05-01), Bach
patent: 4071726 (1978-01-01), Werda
patent: 4104981 (1978-08-01), Ono et al.
Pfeifer Rolf
Wimmer Jorn
Pollard Steven M.
Siemens Aktiengesellschaft
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