Structure of key pad

Details Structure of key pad Structure of key pad

1998-09-15

2000-12-26

Horabik, Michael

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

341 20, 2002061, 2003022, 200512, 379451, H03M 1100

Patent

active

061666629

ABSTRACT:
A key pad includes a membrane circuit, a flat frame mounted on the membrane circuit to hold a set of key switches in respective openings on the flat frame, each key switch having a key body molded in one opening on the flat frame, a key cap integral with the key body at the top and carrying a respective sign, a rubber cone integral with the key body at the bottom, and an electrically conductive element integral with the rubber cone on the inside for triggering a respective contact at the membrane circuit upon each down stroke of the respective key switch.

REFERENCES:
patent: 4501936 (1985-02-01), Morse
patent: 4734679 (1988-03-01), Haskins
patent: 4862499 (1989-08-01), Jerkot et al.
patent: 5738450 (1998-04-01), Lukosch

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