Inflatable keyboard

Details Inflatable keyboard Inflatable keyboard

1995-12-21

1997-01-21

Burr, Edgar S.

Typewriting machines

Key-board or key lever-actuating mechanism

4004911, 341 22, B41J 508, H03K 1794

Patent

active

055954499

ABSTRACT:
A keyboard for data entry has a rigid portion containing a pump and a flexible inflatable portion including inflatable keys. A flexible circuit has a pair of contacts for each key which are bridged by key operation and extends through both portions to carry key operation signals to a processor in the rigid portion. A release valve permits deflation to a small size for storage and the pump effects inflation to its full size for operation.

REFERENCES:
patent: 4597681 (1986-07-01), Hodges
patent: 4661005 (1987-04-01), Lahr
patent: 4739451 (1988-04-01), Kuba
patent: 4795888 (1989-01-01), MacFarlane
patent: 5141343 (1992-08-01), Roylance et al.
patent: 5459461 (1995-10-01), Crowley et al.
IBM Technical Disclosure Bulletin vol. 27 No. 4A Sep. 1984.

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