Patent ID: 6270268
Filing Date: 2001-08-07
Classification: G06F,H01H

Abstract:
A keyboard apparatus comprising:a key base;a plurality of key tops that are disposed on said key base in matrixed configuration; anda plurality of pantograph mechanisms each being provided for each one of said key tops, respectively, so as to connect each of said key tops to said key base, respectively,wherein said pantograph mechanism comprises first and second pantograph units, first end portions of said first and second pantograph units being pivotally connected to said key top, while a second end portion of said first pantograph unit being pivotally connected to a first portion of said key base and a second end portion of said second pantograph unit being detachably connected to a second portion of said key base, whereby said second end portion of said second pantograph unit is movable pivotally away from or toward said second portion of said key base.