Electricity: circuit makers and breakers – Electric switch details – Indicators
Reexamination Certificate
2008-11-17
2009-10-27
Friedhofer, Michael A (Department: 2833)
Electricity: circuit makers and breakers
Electric switch details
Indicators
C200S314000
Reexamination Certificate
active
07608792
ABSTRACT:
Membrane keyboard for notebook computer and membrane keypad for cellular phone are provided. For the former, the membrane keyboard includes a frame board comprising units having an aperture; transparent keys comprising a bottom peg; resilient bridge structures on the frame board secured to the bottom of the corresponding key and comprising a central opening; insulative elastic members comprising a downward stem and a top cup; a film circuit board comprising LEDs; a transparent light guide film plate on the film circuit board and comprising bottom light diffusing areas under keys and each having a conductive member raised from center of one of different cavities; and a base board with the film circuit board fastened thereon. The elastic member is secured onto the corresponding light diffusing area and is inserted through the aperture and the opening with the cup securely put on the peg so that the keys may light uniformly.
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Friedhofer Michael A
Sunrex Technology Corp.
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