Key array

Details Key array Key array

1981-03-10

1983-08-23

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

235145R, 340365R, H01H 1370, H02B 1500

Patent

active

044005938

ABSTRACT:
A key array in which, progressing from key to key, the switching functions are derived by an AND-operation from mechanical or electrical signals indicating the actuation of pairs of adjacent keys of a row of keys or indicating the actuation of at least two diagonally opposite keys of a square group of four keys arranged in a rectangular keyboard. The pairs of adjacent keys and the square groups of four keys, respectively, each are allocated to a single symbol and each are depressable simultaneously by the operator's fingertip in order to initiate the single respective switching function. Thereby, a large surface lying in one single plane and being divided by gaps between the respective keys of one pair of keys or one group of keys, is available for the symbol legend and for engagement by the fingertip.

REFERENCES:
patent: 2261115 (1941-11-01), Hofgaard
patent: 2730248 (1956-01-01), Van Waert
patent: 3307148 (1967-02-01), Fukamachi
patent: 3523184 (1970-08-01), Vogel
patent: 3980823 (1976-09-01), Howard
patent: 4042777 (1977-08-01), Bequaert et al.
IBM Tech. Disc. Bull.; W. F. Beausoliel et al., "Compact Keyboard", vol. 13, No. 11, Apr. 1971, pp. 3574, 3575.
IBM Tech. Disc. Bull.; E. G. Nassimbene; "Touch Actuated Keyboard", vol. 18, No. 12, May 1976, pp. 4140, 4141.

Affiliated with

Also associated with

Rating

Key array does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key array will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1948516