Thin keyboard

Details Thin keyboard Thin keyboard

1999-11-17

2000-07-11

Friedhofer, Michael

Electricity: circuit makers and breakers

Electric switch details

Actuators

H01H 1370

Patent

active

060876042

ABSTRACT:
A keyboard is constructed so that a ratio of a dimension between a first latching portion of a first lever and a pivotally supporting portion thereof to a dimension between this pivotally supporting portion thereof and a second latching portion thereof is equal to a ratio of a dimension between a first latching portion of a second lever and another pivotally supporting portion thereof to a dimension between this pivotally supporting portion thereof and a second latching portion thereof. Thus, when the key top descends, the second latching portions of the first and second levers are placed outside the first latching portions of the first and second levers. Consequently, reduction in thickness of a keyboard is achieved.

REFERENCES:
patent: 5280147 (1994-01-01), Mochizuki et al.
patent: 5488210 (1996-01-01), Shigetaka et al.
patent: 5597067 (1997-01-01), Yoneyama
patent: 5894117 (1999-04-01), Kamishima
patent: 5924553 (1999-07-01), Yeh
patent: 6004051 (1999-12-01), Hu

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