Keyswitch key apparatus

Details Keyswitch key apparatus Keyswitch key apparatus

1998-01-08

1999-11-16

Scott, J. R.

Electricity: circuit makers and breakers

Electric switch details

Actuators

H01H 312, H01H 1370

Patent

active

059862270

ABSTRACT:
A deadlock prevention device of a keyswitch key includes a keycap and a base between which a scissors-like linkage mechanism is deformably received. The scissors-like linkage mechanism has a slidable and rotatable member formed at an intermediate portion thereof for deformation in response to a depression on the keycap. Therefore, the deadlock prevention device of the keyswitch key prevents the keyswitch key from deadlocking during operation.

REFERENCES:
patent: 4433225 (1984-02-01), Cowles
patent: 5278371 (1994-01-01), Watanabe et al.
patent: 5382762 (1995-01-01), Mochizuki
patent: 5386091 (1995-01-01), Clancy
patent: 5457297 (1995-10-01), Chen
patent: 5466901 (1995-11-01), Mochizuki
patent: 5488210 (1996-01-01), Shigetaka et al.
patent: 5769210 (1998-06-01), Tsai

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