Keyboard

Details Keyboard Keyboard

1981-03-24

1982-12-28

Shepperd, John W.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 5A, 200340, H01H 1314, H01H 1370, H01H 504

Patent

active

043663559

ABSTRACT:
A keyboard comprises a base plate having conductor paths and contact areas rovided thereon, a plurality of keys associated with said contact areas, said keys consisting each of an elastically deformable snap member, the contact element thereof being adapted to be brought into contact with said contact areas by deformation upon actuation of an actuating button and being positioned above said contact areas in spaced relationship thereto. A metal frame is provided as mounting support for the snap members, said metal frame having a number, which corresponds to the number of snap members, of protrusions protruding therefrom in a direction toward the actuating buttons. Each protrusion has an opening therein, in which the snap member is held.

REFERENCES:
patent: 3643041 (1972-02-01), Jackson
patent: 4243861 (1981-01-01), Standwitz

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