Locks – Operating mechanism – Key
Reexamination Certificate
2011-02-01
2011-02-01
Gall, Lloyd A (Department: 3673)
Locks
Operating mechanism
Key
C070S340000, C070S341000, C070S383000, C070S384000, C070S493000, C070S495000
Reexamination Certificate
active
07878036
ABSTRACT:
A lock cylinder having a keyway includes a first plurality of guide channels. A plurality of cup-shaped pins is movably disposed within the first plurality of guide channels. Each cup-shaped pin of the plurality of cup-shaped pins extends across the keyway. Each cup-shaped pin of the plurality of cup-shaped pins has an engagement protrusion. The first plurality of guide channels conform to the shape of the plurality of cup-shaped pins to allow movement of the plurality of cup-shaped pins in a first direction while restraining movement transverse to the first direction. A plurality of biasing springs is positioned to bias the plurality of cup-shaped pins in a direction toward the keyway. A plurality of racks is movably disposed in a second plurality of guide channels. Each rack of the plurality of racks has at least one engagement groove to selectively receive the engagement protrusion of a respective cup-shaped pin.
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Armstrong Steven
Chong Gerald B.
Aust, Esq. Ronald K.
Gall Lloyd A
Newfrey LLC
Veltman, Esq. Richard J.
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