Dead bolt lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 16, 1981
Grant Date -
N/A
app pub date -
Jan 25, 1979
filing date -
Jan 25, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A key operated dead bolt lock includes one or a pair of standard threaded mortise cylinders. The lock further includes set screws, inaccessible from either side of a door in which the lock is installed, which prevent rotation of the cylinders. The cylinders hold cylinder collars in place to prevent access to the bolt from the side.
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Family
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