Invention Grant
- Patent Title: Traction sheave for elevator system
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Application No.: US14777073Application Date: 2013-03-15
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Publication No.: US10301151B2Publication Date: 2019-05-28
- Inventor: Kyle B. Martin
- 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/US2013/032194 WO 20130315
- International Announcement: WO2014/142987 WO 20140918
- Main IPC: B66B9/00
- IPC: B66B9/00 ; B66B11/08 ; B66B15/04
Abstract:
A traction sheave for an elevator system includes an outer sheave surface having a distance from a sheave axis that varies along a width of the traction sheave. The outer sheave surface includes a first portion having a first coefficient of friction and one or more second portions having a second coefficient of friction less than the first coefficient of friction. An elevator system includes an elevator car, a motor and a traction sheave operably connected to the motor to drive rotation of the traction sheave. The traction sheave includes 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 one or more second portions having a second coefficient of friction less than the first coefficient of friction.
Public/Granted literature
- US20160039640A1 TRACTION SHEAVE FOR ELEVATOR SYSTEM Public/Granted day:2016-02-11
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