Cylinder lock and key
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United States of America Patent
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-
Oct 31, 2006
Grant Date -
N/A
app pub date -
Nov 24, 2003
filing date -
Sep 18, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved security cylinder lock and key for operating the cylinder lock are disclosed. The cylinder lock has conventional tumbler locking structure and a secondary locking bar that operates independently of the tumblers. The secondary locking bar prevents operation of the cylinder lock until a properly configured key is placed in the keyway of the cylinder lock.
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