Electric pushbutton switch

Details Electric pushbutton switch Electric pushbutton switch

1990-08-30

1991-12-24

Recla, Henry J.

Electricity: circuit makers and breakers

Snap

Double snap

200461, 200517, 200521, 200407, H01H 500

Patent

active

050755242

ABSTRACT:
A manually actuatable electric pushbutton switch that automatically returns to the starting position after actuation, especially such a switch for the keyboard of an electronic device, for example a typewriter, is provided. The switch has a plastic housing in which is disposed a plate spring that is in engagement with an actuating button. The plate spring has a region that during shifting of the actuating button and flexing of the plate spring abruptly jumps to a different position when the electrical contact position is achieved, so that the triggering function is indicated both physically as well as audibly to the user. The region of the plate spring that abruptly reverses is preferably formed by slots, between which the abruptly reversing plate spring strip is defined.

REFERENCES:
patent: 2700079 (1955-01-01), Haydon
patent: 3800104 (1974-03-01), Lien et al.
patent: 3909564 (1975-09-01), Scheingold et al.
patent: 4385218 (1983-05-01), Nishida
patent: 4484042 (1984-11-01), Matsui
patent: 4642433 (1987-02-01), Murata
patent: 4800245 (1989-01-01), Murmann et al.

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