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Patent
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H01H 3/12 (2006.01) H01H 9/16 (2006.01) H01H 13/14 (2006.01)
Patent
CA 1152546
Case 3792 LIGHTED ELECTRICAL PUSHBUTTON SWITCH Abstract of the Disclosure An electrical lighted pushbutton switch is constructed by inserting a light source in the housing of the switch below a depressible actuating plunger that has a keycap retaining post. The keycap retaining post has a passageway which runs through it from its top surface to its bottom surface which is in alignment with the light source. The removeable keycap has locking detent provisions which cooperate with a mating locking groove on the retaining post. The keycap has a centrally located channel through its top surface that leads to an open cavity and is in alignment with the passageway through the keycap retaining post. A light pipe is inserted that has an upper section that fits into the channel of the keycap, a flange located below this upper section which keeps the light pipe from being forced upwardly through the channel in the keycap and a lower tapered section which is inserted into the passageway of the keycap retaining post.
393347
Illinois Tool Works Inc.
Meredith & Finlayson
LandOfFree
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