Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1997-04-01
1998-08-11
Feild, Lynn D.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
400490, 400682, 200344, 200345, G06F 116, B41J 1156, H05K 704
Patent
active
057936056
ABSTRACT:
A notebook computer is provided with a collapsible keyboard structure having keys supported on scissored linkage arm assemblies. In response to closing of the computer lid, key return spring portions of the keyboard are shifted away from their normal underlying relationships with the keys, and the scissored linkage arm assemblies and keys are forcibly retracted to storage and transport orientations. When the lid is subsequently opened, the key return spring portions, and a specially designed key preload member, are shifted relative to the retracted keys through an elevation stroke. During an initial portion of the elevation stroke, the key return spring portions engage the retracted keys and move them to extended positions in which the spring portions underlie the extended keys. In response to completion of the elevation stroke, the key preload member engages the extended keys and partially retracts them to a resiliently preloaded operating positions in which they partially compress their underlying spring members which substantially preclude the keys from wobbling and rattling in their ready-to-use operating positions.
REFERENCES:
patent: 5481074 (1996-01-01), English
patent: 5532904 (1996-07-01), Sellers
patent: 5602715 (1997-02-01), Lempicki et al.
patent: 5621610 (1997-04-01), Moore et al.
Compaq Computer Corporation
Feild Lynn D.
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