Invention Grant
- Patent Title: Idler or deflector sheave for elevator system
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Application No.: US15037561Application Date: 2013-11-22
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Publication No.: US10294079B2Publication Date: 2019-05-21
- Inventor: Brad Guilani , Amir Lotfi
- Applicant: OTIS ELEVATOR COMPANY
- Applicant Address: US CT Farmington
- Assignee: OTIS ELEVATOR COMPANY
- Current Assignee: OTIS ELEVATOR COMPANY
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- International Application: PCT/US2013/071435 WO 20131122
- International Announcement: WO2015/076822 WO 20150528
- Main IPC: B66B7/06
- IPC: B66B7/06 ; B66B9/00 ; B66B15/02 ; B66B15/04 ; F16H55/32

Abstract:
An elevator system includes an elevator car, a motor, and traction sheave operably connected to the motor to drive rotation of the traction sheave. A belt is operably connected to the elevator car and in frictional contact with the traction sheave to urge movement of the elevator car. One or more deflector sheaves are located between the traction sheave and the elevator car over which the belt is routed to guide the belt to the elevator car. The one or more deflector sheaves include an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer surface includes a first portion having a first coefficient of friction and a second portion having a second coefficient of friction less than the first coefficient of friction, the first portion guiding an elevator belt toward a lateral center of the outer surface.
Public/Granted literature
- US20160304321A1 IDLER OR DEFLECTOR SHEAVE FOR ELEVATOR SYSTEM Public/Granted day:2016-10-20
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