Push-button switch including a sheet provided with a plurality o

Details Push-button switch including a sheet provided with a plurality o Push-button switch including a sheet provided with a plurality o

1990-09-24

1992-08-04

Recla, Henry J.

Electricity: circuit makers and breakers

Solid contact

Membrane type

200512, 200513, H01H 110

Patent

active

051361310

ABSTRACT:
A switch including a springy metallic sheet having a plurality of integrally formed domed members, and a force removing or absorbing element provided within the sheet. The domed members are provided by pressing at a plurality of predetermined positions of the sheet. The force removing or absorbing element includes first slits provided at the peripheral portions of the domed members and second slits provided within the domed members. The slits are provided for removing or absorbing the force caused by the movements of the domed members and for preventing the influence of force to adjacent key portions, and/or for controlling the operating load upon the top of the domed member.

REFERENCES:
patent: 3133170 (1964-05-01), Nanninga
patent: 3590195 (1971-06-01), Driver
patent: 4005293 (1977-01-01), Boulanger
patent: 4084071 (1978-04-01), Smith
patent: 4129758 (1978-12-01), Gilano et al.
patent: 4463234 (1984-07-01), Bennewitz
patent: 4492829 (1985-01-01), Rodrique

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