Elevator escape device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 25, 2004
Grant Date -
N/A
app pub date -
Mar 13, 2003
filing date -
Mar 13, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An escape device of elevator. The device includes an activation assembly comprising sheaves, rope, links, flexible board, roller, guide, limit member, bar, and catch; and an operation assembly comprising sheaves, ropes, links rotating disk, weight, cylinder having a wall aperture, and spring depressible shaft. In case of emergency a manual rotation of the sheave will cause the shaft to remove a support to the weight in the cylinder by retracting from the aperture. Hence, the weight begins to fall to pull the rope. Eventually, an elevator door is opened automatically. The invention can also be configured to facilitate an operation by the handicapped.
First Claim
Family
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Cited Art Landscape
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