Illuminated switch
First Claim
Patent Images
1. A backlit switch, comprising dome shaped springy means having a mesh area to allow substantially even passage of light.
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Abstract
An illuminated switch, suitable for incorporation in a membrane keyboard or other microtravel switch array, is provided. By providing the switch with a translucent cover, on which symbols may be printed, and with a resilient metal spring conductor having a mesh area, light may pass through the operating mechanism of the switch. Thus, light from a source placed at the interior of the switch will pass through the switch and illuminate an area that is pressed to operate the switch.
81 Citations
22 Claims
- 1. A backlit switch, comprising dome shaped springy means having a mesh area to allow substantially even passage of light.
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18. A backlit switch, comprising
translucent key actuator means; -
light source means disposed to emit light to pass through said key actuator means; electrical contact means forming a broken circuit; and dome shaped springy means for completing said broken circuit when said key actuator is triggered, said dome shaped springy means disposed between said light source means and said key actuator means, and said dome shaped springy means having a mesh area for allowing substantially even passage of light. - View Dependent Claims (19, 20, 21)
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22. A backlit switch, comprising
translucent key actuator means; -
light source means disposed to emit light to pass through said key actuator means; first and second electrical contact means, collectively forming a broken circuit; and dome shaped springy means for completing said broken circuit when said key actuator is triggered, said dome shaped springy means contacting said first contact means and biassed away from but contactable with said second contact means, said dome shaped springy means disposed between said light source means and said key actuator means, and said dome shaped springy means having a mesh area for allowing substantially even passage of light.
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Specification