Keyboard switch

Details Keyboard switch Keyboard switch

1999-01-12

2000-05-30

Yan, Ren

Typewriting machines

Key-board or key lever-actuating mechanism

Key-cap or key-stem structure

400495, 200344, B41J 508

Patent

active

06068416&

ABSTRACT:
A pattern sheet, an insulation sheet and a frame made of sheet metal are successively built up on a plate made of sheet metal, a pair of links pivotally connected together intermediate their opposite ends to form a pantograph mechanism are movably engaged at their one ends with respective bearings formed on the frame by a drawing process while the other ends of the links are movably engaged with respective bearings formed on the bottom surface of a key top.

REFERENCES:
patent: 5504283 (1996-04-01), Kako et al.
patent: 5512719 (1996-04-01), Okada et al.
patent: 5793605 (1998-08-01), Sellers
patent: 5813778 (1998-09-01), Shih
patent: 5823325 (1998-10-01), Lin
patent: 5901837 (1999-05-01), Aimi
patent: 5947616 (1999-09-01), Liang
patent: 5967298 (1999-10-01), Watanabe et al.

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