Wide keypad and wide keypad mounting structure for...

Details Wide keypad and wide keypad mounting structure for... Wide keypad and wide keypad mounting structure for...

2005-11-22

2005-11-22

Chiang, Jack (Department: 2642)

Telephonic communications

Supervisory or control line signaling

Substation originated

C379S433060, C379S433070

Reexamination Certificate

active

06968054

ABSTRACT:
Disclosed are a wide keypad and a wide keypad mounting structure in a portable terminal. In the wide keypad, a plurality of key tops are arranged in tight contact in a matrix of rows and columns. A key film has a plurality of upper protrusions in contact with the bottom surfaces of the key tops, a plurality of lower protrusions as contact points spaced from metal domes, and recesses between the upper protrusions. A key frame is inserted into the recesses of the key film and has at least one spacer extended upward for providing space in which the key tops move up and down between the upper casing frame and the key film.

REFERENCES:
patent: 5598469 (1997-01-01), Preker
patent: 5877709 (1999-03-01), Ala-Lehtimaki et al.
patent: 6187514 (2001-02-01), Kiyosawa et al.

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