Escalator handrail drive

US4875568A · kind A · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Dietrich E. Hermann · Vechelde, DE
• Ralf Holzhauer · Wetter, DE

Key dates

• Filing date: Jan 5, 1989
• Grant date: Oct 24, 1989
• Expiry date: Jan 5, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B23/04
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

An escalator handrail is driven by a pair of angularly offset rollers. The angular offset of the rollers causes a wedging effect at the roller nip whereby the driving force imparted by the rollers to the handrail is increased.