Locks – Operating mechanism – Key
Reexamination Certificate
2005-09-20
2005-09-20
Gall, Lloyd A. (Department: 3676)
Locks
Operating mechanism
Key
C070S491000, C070S494000, C070S495000, C070S496000
Reexamination Certificate
active
06945082
ABSTRACT:
A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.
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Benzie Mark
Boadwine W. Daniel
Duckwall Thomas
Field Peter H.
Hartman Glenn
Gall Lloyd A.
Medeco Security Locks Inc.
Rothwell Figg Ernst & Manbeck
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