Key switch, input device, contact pattern

Details Key switch, input device, contact pattern Key switch, input device, contact pattern

2011-03-29

2011-03-29

Friedhofer, Michael A (Department: 2833)

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

C200S0050EA

Reexamination Certificate

active

07915547

ABSTRACT:
A key switch comprises: a plurality of conductive portions which are respectively positioned in dispersed directions from a center of a key top; and contact patterns provided on a print substrate, which respectively face the conductive portions. The contact patterns each have, in a conductive portion facing area thereof, at least four separate lands, and the at least four lands include: a first land and a second land which are separated by a first gap provided on a first reference line which extends from a position facing the center of the key top in the direction of the center of the conductive portion facing area; a third land which is separated from the first land by a second gap provided at a position which is distant from the first reference line in one direction; and a fourth land which is separated from the second land by a third gap provided at a position which is distant from the first reference line in another direction.

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Extended European Search Report dated Feb. 2, 2010 issued in corresponding European Application No. 08014137.7-1231.

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