Dual tactility keypad switch

Details Dual tactility keypad switch Dual tactility keypad switch

2006-06-13

2006-06-13

Lee, Richard K. (Department: 2832)

Electricity: circuit makers and breakers

Solid contact

Membrane type

C200S314000, C200S406000

Reexamination Certificate

active

07060924

ABSTRACT:
A keypad assembly comprising a substrate, a membrane, and a logic component. The substrate has at least one set of electrical contact points that comprise a first, second, and a third conductive electric-contact area. The membrane comprises domed elements having a conductive elements fixedly attached thereto. Each conductive element is configured to interface with one or more of the electrical contact points with a soft press and a hard press. The logic component is in operative communication with the substrate and the membrane. The logic component is configured to distinguish between the soft press and the hard press.

REFERENCES:
patent: 4700377 (1987-10-01), Yasuda et al.
patent: 4933522 (1990-06-01), Celander
patent: 5311175 (1994-05-01), Waldman
patent: 6423918 (2002-07-01), King et al.
patent: 6486427 (2002-11-01), Pruvot
patent: 6563068 (2003-05-01), Yamagata et al.
patent: 6573467 (2003-06-01), Nakanishi et al.
patent: 6680677 (2004-01-01), Tiphane
patent: 6735307 (2004-05-01), Völckers

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