Push button key modules

Details Push button key modules Push button key modules

1981-02-10

1982-10-19

Brigance, Gerald L.

Buckles, buttons, clasps, etc.

240365VL, 200309, H04M 123

Patent

active

043552110

ABSTRACT:
The invention enables individual buttons to be replaced on a push-button telephone without disturbing the other buttons.
Each button is retained in position by lugs formed on the lower portion of the button which engage underneath the edges of a hole formed in the body of the telephone. The edges of the hole are provided with slots and by sliding the button until the lugs become aligned with the slots, the button can be removed. A cover or escutcheon plate fits over the buttons to prevent inadvertent sliding and consequent removal of the buttons.

REFERENCES:
patent: 3499515 (1970-03-01), Mikrut
patent: 3946171 (1976-03-01), Kuhfus
IBM Technical Disclosure Bulletin, "Quick Changeable Keytop Indicia", D. L. Potak, 9-1969, vol. 12, No. 4.
"Interchangeable Keybutton Group Assembly", IBM Technical Disclosure Bulletin, Campbell and Hayes, vol. 20, No. 6, Nov. 1977.

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