Foldable keyboard

Details Foldable keyboard Foldable keyboard

2005-07-19

2005-07-19

Feild, Lynn (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C400S082000, C400S682000, C341S022000, C312S223200

Reexamination Certificate

active

06920039

ABSTRACT:
A foldable keyboard includes first, second, and third keyboard units U1, U2, and U3which are rotatably connected with one another by means of main links (4) and (5) disposed on side end surfaces of each unit. The first and second units U1and U2are rotatably connected by means of an auxiliary link (6) parallel to the main link (4), and the second and third units U2and U3are rotatably connected by means of an auxiliary link (7) parallel to the main link (4). The first unit U1is formed with recesses (38) at four corners of a peripheral wall member (12) and the second unit U2is formed with projections (36) at four corners of an undersurface of the second unit U2so that the projections (36) are received in the recesses (38) when the first, second, and third units U1, U2, and U3are disposed (stacked) one upon another into a folded state.

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patent: 6755581 (2004-06-01), Huang et al.
patent: 2003/0002900 (2003-01-01), Lin
patent: 2003/0048595 (2003-03-01), Hsieh et al.
patent: 2003/0122690 (2003-07-01), Hsu
patent: A 8-190834 (1996-07-01), None

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