Keyboard and keyswitch

Details Keyboard and keyswitch Keyboard and keyswitch

2009-09-14

2011-12-20

Leon, Edin A. (Department: 2833)

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

Reexamination Certificate

active

08080744

ABSTRACT:
The invention discloses a keyswitch including a keycap, a base plate, and a support frame. The keycap includes an engagement part, and the base plate includes a slide part. The support frame is between the keycap and the base plate and includes a first end and a second end. The first end is connected to the engagement part of the keycap, and the second end slides in the slide part of the base plate. The engagement part includes a first concave part and a second concave part, and a radial dimension of the first concave part is different from a radial dimension of the second concave part. The first end of the support frame includes a first protrusion part and a second protrusion part, and a radial dimension of the first protrusion part is different from a radial dimension of the second protrusion part. The first protrusion part and the second protrusion part respectively are engaged with the first concave part and the second concave part respectively.

REFERENCES:
patent: 5278371 (1994-01-01), Watanabe et al.
patent: 5695047 (1997-12-01), Tanahashi
patent: 5878872 (1999-03-01), Tsai
patent: 6366275 (2002-04-01), Lai
patent: 6958458 (2005-10-01), Tsai

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