Elevator car having an angled underslung roping arrangement

US7753175B2 · kind B2 · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Loren Fanion · Forestville, US
• John Ferrisi · Southington, US
• Kevin Gleason · Urbana, US
• Daniel Greer · Bristol, US
• Robert Hammell · Killingworth, US
• Dave Jarvis · Aberdeen, US
• John J. Kriss · East Hampton, US
• John M. Milton-Benoit · West Suffield, US
• Harry Terry · Avon, US
• Boris G. Traktovenko · Avon, US
• Ken Woronoff · Portland, US

Key dates

• Filing date: Feb 25, 2005
• Grant date: Jul 13, 2010
• Expiry date: Apr 1, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B11/0206
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

An elevator system (20) includes an underslung car (22). A plurality of load bearing members (32-38) are closer together behind the elevator car and spaced farther apart near a front of the elevator car (22). A plurality of sheaves (40-44) are supported for vertical movement with the car and rotational movement relative to the car (22) such that the load bearing members (32-38) can be arranged in a 2:1 roping ratio and extend underneath the car (22). A disclosed example includes sheaves (40-44) rotatable about sheave axes that are at oblique angles relative to corresponding edges of the elevator car (22).