Key switch arrangement for notebook computers

Details Key switch arrangement for notebook computers Key switch arrangement for notebook computers

1996-11-19

1998-06-09

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200344, H01H 1370

Patent

active

057638420

ABSTRACT:
A key switch for notebook computers, including a bottom frame having two pairs of upright lugs spaced near two opposite sides, a membrane circuit mounted on the bottom frame, a key cap, a rubber cone supported on the membrane circuit and compressed by the key cap to trigger the membrane circuit in producing an electrical signal, a first link having one end pivoted to the key cap and an opposite end coupled to one pair of upright lugs of the bottom frame by a slip joint, and a second link pivotably coupled to the first link in its middle and having one end pivoted to the key cap and an opposite end pivoted to the other pair of upright lugs of the bottom frame.

REFERENCES:
patent: 5278371 (1994-01-01), Watanabe et al.
patent: 5512719 (1996-04-01), Okada et al.
patent: 5555971 (1996-09-01), Takada et al.
patent: 5590020 (1996-12-01), Sellers
patent: 5630501 (1997-05-01), Tsay

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