Double-drive automatic sliding door operator

US5711112A · kind A · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Michael Barten · Berlin, DE
• Rudiger Lob · Hennigsdorf, DE
• Helmut Schroder-Brumloop · Ville-d'Avray, FR
• Mustapha Toutaoui · Berlin, DE

Key dates

• Filing date: Sep 3, 1996
• Grant date: Jan 27, 1998
• Expiry date: Sep 3, 2016

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E05Y2900/104
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

An automatic sliding door operator includes a top door operator and a bottom door operator, each operator having a motor driven sprocket driving a tooth belt to which the sliding doors are attached, the motors being separately driven in a position-synchronized fashion in response to related encoders connected with each motor to provide positional information.