Folding keyboard

Details Folding keyboard Folding keyboard

1996-07-15

1997-08-05

Burr, Edgar S.

Typewriting machines

Key-board or key lever-actuating mechanism

Key-board including keys grouped to facilitate positioning...

361680, B41J 510

Patent

active

056535430

ABSTRACT:
A folding keyboard has an enclosure made up of a rectangular bottom panel with more frontage than depth and a frame having front, rear and left and right banks raised from the four marginal edges of the bottom panel, and a keyboard structure housed in the enclosure. The rear and front banks are split at the center of the enclosure lengthwise thereof and a pair of opposed coupler seats are formed in the split marginal portions of the split rear and front banks. The keyboard structure and the bottom panel are split along a line of demarcation line between key top groups closest to the center line lengthwise of the keyboard structure and the bottom panel, and the split enclosure halves are pivotally secured to each other by couplers which has their left and right end portions received in left and right coupler seats cut in the split left and right rear banks and the split left and right front banks and through which left and right connecting pins are inserted. A folding center line is set above the key tops along the above-said center line, and the left and right connecting pins are positioned at the same distance from the folding center line on straight lines extending therefrom obliquely downward at an angle of 45 degrees thereto.

REFERENCES:
patent: 5267127 (1993-11-01), Pollitt
patent: 5543787 (1996-08-01), Karidis et al.
patent: 5543790 (1996-08-01), Goldstein

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