Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Reexamination Certificate
2005-06-28
2005-06-28
Scott, James R. (Department: 2832)
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
C200S292000, C200S406000, C200S512000, C200S513000, C200S516000
Reexamination Certificate
active
06911608
ABSTRACT:
A keypad with both elevated and non-elevated key regions, and key switches disposed beneath both types of key regions. The non-elevated key regions each provide corresponding character output based on an operation algorithm that considers activation of at least one adjacent elevated key region as well as activation of the switch below the non-elevated key region. The keypad includes a keymat that is rigidly held at its perimeter in a stretched condition across a switch substrate. The key switches include metal snap domes that have an elevated central region forming a downwardly facing cavity defined at its edge by a ridge disposed above the switch contacts that electrically engages multiple switch contacts in an annular contact zone.
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Digit Wireless, LLC
Fish & Richardson P.C.
Scott James R.
LandOfFree
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