Auxiliary lock with a control plate for preventing unlatching from outside
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 14, 2000
Grant Date -
N/A
app pub date -
Apr 14, 1999
filing date -
Apr 14, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An auxiliary lock includes an exterior lock assembly having a knob and an actuating plate that is connected to the knob to rotate therewith. A casing is mounted inside a door for rotatably supporting a knob that is also connected to the actuating plate to rotate therewith. A control plate is mounted in the casing and includes a first end extended beyond the casing for manual operation. A second end of the control plate includes a notch releasably engaged with one of a number of teeth of an engaging wheel mounted in the casing. The control plate is movable vertically and retained in place by a positioning element. The engaging wheel is connected to the actuating plate to rotate therewith.
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