Membrane switch having spacer posts

Details Membrane switch having spacer posts Membrane switch having spacer posts

1982-06-10

1984-07-31

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 1370

Patent

active

044632320

ABSTRACT:
Disclosed is a pushbutton-type switch such as used on the keyboard of a small-size electronic computer. The switch includes a main member carrying a movable contact and one or more projections or posts of lesser height than the movable contact. Upon application of finger pressure to the main member, the movable contact is brought into uniform contact with a fixed contact therebelow without chattering, by virtue of the supporting action of the posts.

REFERENCES:
patent: 3600528 (1971-08-01), Leposavic
patent: 3668337 (1972-06-01), Sinclair
patent: 3721778 (1973-03-01), Seeger, Jr. et al.
patent: 3911215 (1975-10-01), Hurst et al.
patent: 3932722 (1976-01-01), Obata et al.
patent: 3941953 (1976-03-01), Misson et al.
patent: 4034176 (1977-07-01), Larson
patent: 4145584 (1979-03-01), Otterlei
patent: 4220815 (1980-09-01), Gibson et al.
patent: 4302648 (1981-11-01), Sado et al.
patent: 4382165 (1983-05-01), Balash et al.

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