Device for unlocking tubular-type door lock in conjunction with indoor handle
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United States of America Patent
Stats
-
Apr 17, 2001
Grant Date -
N/A
app pub date -
Aug 2, 1999
filing date -
Aug 2, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for unlocking a tubular-type door lock in conjunction with the indoor handle is disclosed. A hollow shaft is fitted into the outdoor plate, while a hollow sleeve is axially received in the hollow shaft to be movable in opposite directions. The sleeve is normally and rotatably positioned in the opening of the outdoor plate to be unlocked, but selectively engages with the locking slot of the outdoor plate to be locked. A ratchet unit, consisting of locking and unlocking ratchets, is received in the sleeve, thus being operable in conjunction with the indoor handle to selectively move the sleeve. The two ratchets, individually having a ratchet face, engage with each other at their ratchet faces to be relatively slidable on their slope surfaces in conjunction with the indoor handle, thus selectively and axially moving the sleeve from the locked to the unlocked position.
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