Switch with illuminated handle tip

Electricity: circuit makers and breakers – Electric switch details – Indicators

Patent

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Details

362 32, 340380, 116124L, H01H 916

Patent

active

040829340

ABSTRACT:
A light-transmissive insert mounted in a tunnel in a pivotal operating handle transmitts light from a light source mounted internally of a housing through the handle to appear as a lighted bar at the tip of the handle. The handle is rigidly mounted to an actuator in snap-on relation to allow front of panel relamping. The actuator is of generally inverted L-shape, pivotally mounted to the housing at ends of the horizontal leg of the L, with the vertical leg of the L extending downwardly into the housing to actuate a set of contacts. A stationary light source is mounted in the housing adjacent the vertical leg and extends upwardly through an aperture in the horizontal leg. The aperture is made wide enough to allow clearance of the light source during pivoting of the actuator. The tunnel extends through the handle from the outer end thereof to communicate with the aperture in the horizontal leg of the actuator and thus be exposed to the light source. The light-transmissive insert mounted in the tunnel has an inner end facing the light source throughout pivotal movement of the handle and actuator and acts as a light guide to transmit light through the handle and to concentrate otherwise divergent light rays at the external tip of the handle.

REFERENCES:
patent: B470899 (1976-03-01), Ohashi
patent: 3651296 (1972-03-01), Yarbrough
patent: 3727020 (1973-04-01), Bailey
patent: 3819928 (1974-06-01), Kuroyama
patent: 3916133 (1975-10-01), Bollinger
patent: 4016534 (1977-04-01), Kobayashi

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