Automatic return mechanism for elevator escape device
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United States of America Patent
Stats
-
Apr 25, 2006
Grant Date -
Jul 7, 2005
app pub date -
Jan 5, 2004
filing date -
Jan 5, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a return mechanism for elevator escape device. The return mechanism mounted at a wall of a car and comprises a drive sheave, upper and lower secondary sheaves, a wheel coaxially disposed with the drive sheave and located on an inner wall of the car, a lever including a lower pivot end, a positioning bar, an upper end at the drive sheave, and a groove, a link having one end defined by the groove and a roller at the other end, a support for permitting the link to slide therethrough, a catch, and projecting return members. In a case of car failure, a trapped passenger is able to continuously rotate the wheel for escape in which the mechanism can automatically return to its original position by moving the link backward after the roller contacting the return member.
First Claim
Family
International Classification(s)
Cited Art Landscape
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