G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 3/023 (2006.01) G06F 1/16 (2006.01) H01H 13/705 (2006.01)
Patent
CA 2143649
An improved alphanumeric keyboard (10) is illustrated for use in lap top or notebook personal computers (12). The key- board (10) has a plurality of full travel, self leveling keyswitches (14) for actuating printed circuit electrical contacts (22 and 26) when the keyswitch is depressed. The keyboard (10) includes an integral keyswitch structure (40) that has an integral keytop and keytop support substructure (44) supported on a common integral base sheet (46). Each of the keytop support substructures (44) includes hinge members (50a, 50b, 50c and 50d) that are positioned in a rectangular orientation about the keytop (42). Each hinge member has a rigid upper hinge panel (52) and a lower hinge panel (58) that are integrally interconnected to the keytop (42) and the base sheet (46) for maintaining the keytop in a parallelogram orientation as it is depressed to prevent the keytop from moving laterally or wobbling during depression. The hinge panels (52 and 58) are interconnected by resilient webs (54, 60 and 64) to cause the keytop to be returned to its elevated non-actuating position.
Goudreau Gage Dubuc
Key Tronic Corporation
LandOfFree
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