Removable button for a keypad

Details Removable button for a keypad Removable button for a keypad

1997-02-27

1999-05-25

Chiang, Jack

Telephonic communications

Supervisory or control line signaling

Substation originated

200345, H04M 100, H01H 1370

Patent

active

059076127

ABSTRACT:
A button which is removable from and insertable into a keypad from the exterior of a housing containing the keypad. The button fits within an opening of the keypad and is formed with resilient fingers in its side walls. The fingers have interfering flanges at their lower ends. The flanges are chamfered to provide a camming action to deflect the fingers when the button is removed or inserted.

REFERENCES:
patent: 4556769 (1985-12-01), Inaba
patent: 5283408 (1994-02-01), Chen

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