Keyboard switch assembly with improved pushbutton and associated

Details Keyboard switch assembly with improved pushbutton and associated Keyboard switch assembly with improved pushbutton and associated

1975-03-31

1976-08-31

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 67R, 200 86R, 200159B, 200302, 200340, H01H 1306, H01H 312, H01H 504

Patent

active

039782972

ABSTRACT:
A keyboard device which includes a frame having a plurality of bores in which there is positioned a core for slideable motion therein, and a keyboard top positioned over the bores and preferably sealing each of the cores within the bores of the frame so that no particles of food or dust can accumulate between the cores and the frame while still permitting the cores to be depressed to cause a contactor means to engage contact means. In the preferred embodiment the cores are loose within the bores and are held therein from the top by said keyboard top. In addition, a mask to simulate the appearance of a frame about the portions of the top is provided. In addition, the preferred embodiment is sealed on the top and bottom to protect the in words from the environment.

REFERENCES:
patent: 3290439 (1966-12-01), Willcox et al.
patent: 3382338 (1968-05-01), Arseneault et al.
patent: 3584162 (1971-06-01), Krakinowski
patent: 3591749 (1971-07-01), Comstock
patent: 3749859 (1973-07-01), Webb et al.
patent: 3826882 (1974-07-01), Giolitti et al.
patent: 3846596 (1974-11-01), Wolf
patent: 3860771 (1975-01-01), Lynn et al.
patent: 3886012 (1975-05-01), Slater
patent: 3890480 (1975-06-01), Berling et al.

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