Keypad method of manufacture

Details Keypad method of manufacture Keypad method of manufacture

1991-03-12

1994-05-17

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

200 5A, 264255, H01H 1100

Patent

active

053116569

ABSTRACT:
A keypad is comprised of a supporting frame, a plurality of snap action domes, and a plurality of pushbuttons each overlying a dome, all of the above being integrated and formed of a single piece of elastomeric material, the pushbuttons each being surrounded by a thin piece of the material buttressing the pushbutton upwardly, each of the thin pieces of material and an associated portion of the pushbutton forming a dome. The thin pieces of material extend from and are continuous with the frame. Each conducting button is disposed below a corresponding dome and is located such that when a pushbutton is pushed downwardly, its associated dome collapses, moving an associated button downwardly.

REFERENCES:
patent: 4157883 (1979-06-01), Mares
patent: 4536625 (1985-08-01), Bebie
patent: 4634818 (1987-01-01), Hayes-Pankhurst et al.
patent: 4766271 (1988-08-01), Mitsuhashi et al.
patent: 4775574 (1988-10-01), Fukushima et al.
patent: 4862499 (1989-08-01), Jekot et al.

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