Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Reexamination Certificate
2007-10-09
2007-10-09
Friedhofer, Michael A (Department: 2832)
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
C200S600000, C345S160000, C345S173000
Reexamination Certificate
active
11424900
ABSTRACT:
A control panel having a touch sensitive position sensor and at least one mechanical switch located within a sensitive area of the position sensor is provided. The position sensor comprises a capacitive position sensing element coupled to position sensing circuitry operable to determine the position of a capacitive load, such as a finger, positioned adjacent to the sensitive area of the position sensing element. The mechanical switch has an open state and a closed state and is arranged such that a contact of the switch is selectively electrically coupled to or decoupled from the position sensing element depending on whether the switch is in the open or closed state. A compact and robust control panel can thus be provided in which the presence of the mechanical switch within the sensitive area of the position sensor does not significantly effect its sensitivity.
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Friedhofer Michael A
Kiewit David
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