Sealed, modular keyboard providing a tactile feel

Details Sealed, modular keyboard providing a tactile feel Sealed, modular keyboard providing a tactile feel

1982-08-31

1984-09-11

Phillips, Charles E.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200314, 200340, 200 5A, A01H 312

Patent

active

044711891

ABSTRACT:
The keyboard comprises a printed circuit (4) serving both as an electrical connection means and as a supporting means for a modular frame (3) including a plurality of square-shaped housings (30) defined by walls (31) and arranged in rows and columns, either contact modules (7) or signal-lamp modules fitted on said printed circuit in said housings, a resilient, sealed diaphragm (1) secured to said frame, keys cooperating with said contact modules through the portions of said keys which face outwardly from said diaphragm and are actuated by an operator finger, and means (105, FIG. 5; 9, FIG. 2) by which a tactile feel can be provided through a snapping, movement.

REFERENCES:
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patent: 3849621 (1974-11-01), Habecker
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patent: 3999025 (1976-12-01), Sims, Jr.
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patent: 4056701 (1977-11-01), Weber
patent: 4066850 (1978-01-01), Heys, Jr.
patent: 4131777 (1978-12-01), Bailey et al.
patent: 4288672 (1981-09-01), Puccini
patent: 4331851 (1982-05-01), Johnson

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