Drive system for handrails of walkways and moving stairs
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United States of America Patent
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Jul 4, 2017
Grant Date -
Aug 11, 2016
app pub date -
Sep 19, 2014
filing date -
Sep 23, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Example drive systems for handrails of walkways and moving stairs may comprise a plurality of carriages. In some examples, each carriage may comprise a body with several leading rollers that roll along a guide that defines a handrail path. The carriage may further comprise a locking/release mechanism for selectively coupling the carriage to a drive chain of the handrail. The locking/release mechanism may comprise a hook configured to move between an engagement position wherein the carriage is coupled to the drive chain and a disengagement position wherein the carriage is uncoupled from the drive chain. In some cases, a position of the hook may be controlled by a wheel that travels along a cam profile.
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