SHEAVE FOR USE IN AN ELEVATOR SYSTEM

Title:

SHEAVE FOR USE IN AN ELEVATOR SYSTEM

Document Type and Number:

WIPO Patent Application WO2006022686

Kind Code:

A3

Abstract:

An elevator sheave (20) includes a belt guiding surface (26) having a surface profile along at least a portion of the belt guiding surface. The surface profile preferably is defined by an n^th order polynomial equation where n is a number greater than 2. In one example, the reference point (40) is a central point along the width of the belt guiding surface (26). In one example, a central portion (42) of the surface profile preferably is aligned to be generally parallel with the central axis (34) of the sheave body. Some examples have curvilinear side portions (44, 46) between the central portion (42) and the edges (28, 30) of the sheave. Other examples also include second side portions (48, 50) that have linear profiles.

Inventors:

PRASAD DILIP (US)
CASSENTI BRICE N (US)
BARANDA PEDRO S (PT)
VERONESI WILLIAM (US)
PERRON WILLIAM C (US)
MELLO ARY O JR (US)
STUCKY PAUL A (US)
PITTS JOHN T (US)
WESSON JOHN P (US)
THOMPSON MARK S (US)

Application Number:

PCT/US2004/025211

Publication Date:

November 23, 2006

Filing Date:

August 04, 2004

Export Citation:

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Assignee:

OTIS ELEVATOR CO (US)
PRASAD DILIP (US)
CASSENTI BRICE N (US)
BARANDA PEDRO S (PT)
VERONESI WILLIAM (US)
PERRON WILLIAM C (US)
MELLO ARY O JR (US)
STUCKY PAUL A (US)
PITTS JOHN T (US)
WESSON JOHN P (US)
THOMPSON MARK S (US)

International Classes:

B66B11/08; B66D3/08

Foreign References:

US5002157A	1991-03-26
US6401871B2	2002-06-11
US6488123B2	2002-12-03
US6041476A	2000-03-28

Other References: