Multi-row keyboard for typewriters or similar machines

Details Multi-row keyboard for typewriters or similar machines Multi-row keyboard for typewriters or similar machines

1980-01-28

1981-10-13

Pieprz, William

Typewriting machines

Key-board or key lever-actuating mechanism

Key-board including row of keys having different heights

400490, 400489, 400495, 400496, 340365R, 235145R, B41J 510, B41J 516

Patent

active

042945550

ABSTRACT:
Keyboards designed in accordance with ergonomic viewpoints are slightly dished transversely in relation to the longitudinal direction and the key surfaces have a slope tending toward the dished shape. According to the invention, this arrangement is accomplished with the aid of adapters located between the key element plungers and the keyheads. For each row of keys there is provided a special type of adapter. The types of adapters differ from one another in their effective heights and in the slope angles of the supporting surfaces for the keyheads.

REFERENCES:
patent: 2102526 (1937-12-01), Guilfoyle
patent: 2369807 (1945-02-01), Solon
patent: 2425808 (1947-08-01), Jakosky
patent: 2600101 (1952-06-01), Faulhaber
patent: 2615548 (1952-10-01), Hopkins et al.
patent: 3667787 (1972-06-01), Semour
patent: 3730322 (1973-05-01), Hare
patent: 3821529 (1974-06-01), Kallage, Jr. et al.
patent: 4077657 (1978-03-01), Trzeciak
patent: 4123641 (1978-10-01), Murata
R. H. Harris, "Curved Keyboard," IBM Tech. Disclosure Bulletin, vol. 20, No. 7, pp. 2784-2785, 12/77.

Affiliated with

Also associated with

Rating

Multi-row keyboard for typewriters or similar machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-row keyboard for typewriters or similar machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-row keyboard for typewriters or similar machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-928500