Low profile keyboard operator

Details Low profile keyboard operator Low profile keyboard operator

1978-03-06

1980-09-16

Pieprz, William

Typewriting machines

Key-board or key lever-actuating mechanism

Including mechanism for activating keys

400 70, 335112, 200175, B41J 508, B41J 2900

Patent

active

042226759

ABSTRACT:
A low profile keyboard operating system in which a generally orthogonal matrix of mechanically movable row and column matrix members is disposed over the keyboard to be operated with the intersections of the matrix members adjacent to the keys, the arrangement being such that actuation of only one member at an intersection will not operate a key while operation of both members at an intersection actuates a key.

REFERENCES:
patent: 1283174 (1918-10-01), Ghio
patent: 1753991 (1930-04-01), Langford
patent: 2581665 (1952-01-01), Jarmann
patent: 2651682 (1953-09-01), Kinithof
patent: 2666516 (1954-01-01), Boni
patent: 3374451 (1968-03-01), Barker et al.
patent: 3427575 (1969-02-01), Mustafa
patent: 3492612 (1970-01-01), Ayres et al.
patent: 3629836 (1971-12-01), Schlesinger, Jr.
patent: 3711670 (1973-01-01), Dietsch
patent: 3768622 (1973-10-01), Wood
patent: 4138197 (1979-02-01), Minton
patent: 4141658 (1979-02-01), Ricca
patent: 4146336 (1979-03-01), Hasenbalg

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