Data input keyboard

Details Data input keyboard Data input keyboard

1981-06-11

1983-09-13

Groody, James J.

Communications: electrical

Audible indication

Percussion-type sound producer

200 11TW, 340365VL, 400485, G06F 302, H01H 1958, H01H 2178

Patent

active

044045476

ABSTRACT:
Disclosed is a data input keyboard comprising a plurality of keys which are arranged on a panel in the form of a matrix of "m" lines, "n" columns and each of the keys being provided with a reset member and a pusher coupled to a contact pair; a switch means provided with a plurality of contact pairs; and a rotation transfer mechanism incorporating an input shaft with a rotation member and "m" output shafts and mechanically coupled to the contact pairs of the switch means. A body of the contact pairs of all the keys defines an accurate channel of forming the codes of the characters assigned by the keyboard and a body of the contact pairs of the switch means defines a rough channel of forming the aforesaid codes. Each of the keys has the shape of a cylinder with faces on the peripheral surface thereof carrying the inscriptions of the characters, and is made rotatable around the axis of the cylinder. The keys of each of the "m" lines of the matrix are mounted on one of the output shafts of the rotation transfer mechanism so that each of the keys is capable of shifting toward its pusher.

REFERENCES:
patent: 3760409 (1973-09-01), Ruben et al.
patent: 4005388 (1977-01-01), Morley et al.
patent: 4120044 (1978-10-01), Harayda

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