Sheave for use in an elevator system

A sheave for use in an elevator system, comprising: a sheave body having a central axis and a belt guiding surface including a surface profile extending in an axial direction along at least a portion of the belt guiding surface, the surface profile defined as an n degree polynomial of a distance fro...

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Bibliographic Details
Main Author PRASAD D.,CASSENTI B. N.,BARANDA P. S.,VERONESI W.,PERRON W. C.,MELLO A. O. JR.,STUCKY P. A.,PITTS J. T.,WESSON J. P.,THOMPSON M. S
Format Patent
LanguageEnglish
Published 11.07.2007
Subjects
CAPSTANS
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
HOISTS
LIFTING
PERFORMING OPERATIONS
TACKLES, e.g. PULLEY BLOCKS
TRANSPORTING
WINCHES
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Summary:A sheave for use in an elevator system, comprising: a sheave body having a central axis and a belt guiding surface including a surface profile extending in an axial direction along at least a portion of the belt guiding surface, the surface profile defined as an n degree polynomial of a distance from a selected reference point on the belt guiding surface where n is a number greater than 2. The sheave includes a first edge of the surface profile spaced a first nominal distance from the central axis and wherein the reference point is spaced a second distance from the central axis that is greater than the first distance.
Bibliography:Application Number: CN200480043744