Tactile layer having hinged dome

Details Tactile layer having hinged dome Tactile layer having hinged dome

1977-10-13

1978-11-28

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Actuators

200 5A, 200159B, 200DIG1, H01H 312, H01H 1314

Patent

active

041277589

ABSTRACT:
A tactile layer for use in combination with diaphragm-type switch keyboards to impact a tactile signal to the user upon depression of a key. The tactile layer comprises a sheet of Mylar polyester material having integrally formed deformations therein wherein the deformation is in the form of an annular ring hingedly supporting a dome shaped projection about a generally circular transition line, the transition line being displaced a first predetermined distance from the plane of the sheet which is less than the distance which the top of the dome shaped projection is displaced from the plane of the sheet.

REFERENCES:
patent: 1958050 (1934-05-01), Koppelman
patent: 3503031 (1970-03-01), Nyhus et al.
patent: 3760137 (1973-09-01), Shimojo et al.
patent: 3829646 (1974-08-01), Lorteije et al.
patent: 3860771 (1975-01-01), Lynn et al.
patent: 3898421 (1975-08-01), Suzumura
patent: 3971902 (1976-07-01), Wulf et al.
patent: 4034176 (1977-07-01), Larson

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