Key pattern connecting device for domed metal switch

Details Key pattern connecting device for domed metal switch Key pattern connecting device for domed metal switch

2005-01-18

2005-01-18

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

C200S516000, C200S406000

Reexamination Certificate

active

06844508

ABSTRACT:
A key pattern connecting device for a domed metal switch. The domed metal switch includes first and second contact parts arranged in a key matrix on a main board. The key pattern connecting device comprises at least one first contact part electrically connected to columns by means of main connection patterns on the main board, at least one second contact part electrically connected to rows by means of the main connection patterns, a plurality of domed metal keys provided to the surfaces of the contact parts, respectively, and a flexible circuit attached to the main board in such a manner that the keys are projected through the flexible circuit. The flexible circuit has a plurality of connection patterns formed in such a manner that the connection patterns come into contact with the keys connected to the columns and the keys connected to the rows, respectively.

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patent: 6639159 (2003-10-01), Anzai
patent: 6768074 (2004-07-01), Iwama

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