Keyboard of elastic material for office machines

Details Keyboard of elastic material for office machines Keyboard of elastic material for office machines

1975-12-17

1977-08-02

Rader, Ralph T.

Textiles: fiber preparation

235145R, 200166C, 340365R, B41J 508

Patent

active

040390683

ABSTRACT:
In an office machine keyboard comprising a layer of elastic material provided with individually depressible reliefs representing the keys, each having a top fingering surface, the characters are composed of a second elastic material moulded in accordance with the shapes of the characters and superimposed on the fingering surface.
The elastic keyboard is obtained pressing under heat a mould in which are inserted the two elastic materials.

REFERENCES:
patent: 1041696 (1912-10-01), Summerville
patent: 2947404 (1960-08-01), Siebels et al.
patent: 3120583 (1964-02-01), Cornell
patent: 3684842 (1972-08-01), Boulanger
patent: 3699294 (1972-10-01), Sudduth
patent: 3760137 (1973-09-01), Shimojo et al.
patent: 3823309 (1974-07-01), Caruso

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