Cylindrical and permutation lock arrangements with clutch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 20, 1991
Grant Date -
N/A
app pub date -
May 9, 1989
filing date -
May 12, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A permutation lock chamber has a chamber shaft extending therethrough which is held against rotation when the chamber is in a locked condition and which is rotatable when the chamber is in an unlocked condition. The chamber shaft is connected to the shaft of an outer door handle through a clutch. When the chamber is in its unlock condition and the outer door handle is rotated, the clutch engages and the chamber shaft rotates with the outer door handle shaft. When the chamber is in its locked condition and the outer door handle is rotated, the clutch slips to permit rotation of the outer door handle shaft without rotation of the chamber shaft.
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