Escalator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 21, 2002
Grant Date -
N/A
app pub date -
Feb 25, 2000
filing date -
Apr 26, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an escalator having a plurality of steps connected to an endless chain and moved along an endless path, a rotation locus of step forward wheels at both end portions is shifted toward end portions of the escalator relative to a rotation locus of the chain. A forward wheel guide track for guiding forward wheels of the steps is arranged, at both end portions of the escalator, so that a straight distance between forward wheels of two adjacent steps, which distance tends to be shortened by the chain following an arc at both end portions, is extended. By such constructions, interference between adjacent steps hardly occurs even if the rotation diameter of the steps at each end portion of the escalator is made small. Therefore, the rotation diameter of the steps can be made smaller than a conventional one and the escalator thickness (depth) can be made small.
First Claim
Other Claims data not available