Two-stage switch apparatus

Details Two-stage switch apparatus Two-stage switch apparatus

2011-05-31

2011-05-31

Leon, Edwin A. (Department: 2833)

Electricity: circuit makers and breakers

Multiple circuit control

Sequential operations

Reexamination Certificate

active

07952038

ABSTRACT:
A two-stage switch apparatus includes: a PCB including first and second electrodes; a conductive dome disposed on the PCB; an insulating film covering a surface of the conductive dome on a side opposite to the PCB, and third and fourth electrodes above the conductive dome; and a button actuator provided over a side of the insulating film, which is opposite the PCB. The button actuator includes a conductive elastic body protruding to the side of the insulating film at positions corresponding to both the third and fourth electrodes. An analog portion is formed by the conductive elastic body, the third electrode and the fourth electrode, when the conductive elastic body contacts both the third and fourth electrodes. A digital portion is formed by the conductive dome and the second electrode, when the button actuator is pressed and the conductive dome is indented.

REFERENCES:
patent: 4659881 (1987-04-01), Dowe
patent: 5510584 (1996-04-01), Norris
patent: 7166813 (2007-01-01), Soma et al.
patent: 7217893 (2007-05-01), Huang et al.
patent: 7737373 (2010-06-01), In et al.
patent: 2009/0283390 (2009-11-01), Sharrah et al.

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