Elevator load bearing assembly having a jacket with multiple polymer compositions

US9546447B2 · kind B2 · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• John P. Wesson · Vernon, US
• Mark S. Thompson · Tolland, US
• James R. Irish · Vernon, US
• William A. Veronesi · Hartford, US
• John T. Pitts · Avon, US
• William C. Perron · Bristol, US
• Ary O. Mello · Farmington, US
• Hugh J. O'Donnell · Longmeadow, US
• Kathryn Rauss Sherrick · Bristol, US
• Richard Michael Phillips · Louisville, US
• Jotti Pierangelo · Wohlen, CH

Key dates

• Filing date: Oct 27, 2005
• Grant date: Jan 17, 2017
• Expiry date: Sep 13, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49709
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An elevator load bearing assembly (30) includes a jacket (34) having different portions comprising different polymer compositions. In a disclosed example, a plurality of tension members (32) are at least partially surrounded by a first portion (36) comprising a first polymer composition. A second portion (38) establishes at least one exterior surface (40) of the jacket (34) and comprises a second polymer composition. In one example, a surface-modifying agent is added to alter the composition of at least a portion of the jacket (34). In another example, co-extrusion techniques using different polymer compositions establish different portions of the jacket (34).