Rotary elevator car door coupling

US5485896A · kind A · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Thomas M. Kowalczyk · Farmington, US
• Thomas M. McHugh · Farmington, US
• Edward E. Ahigian · Arlington Heights, US
• Jerome F. Jaminet · South Windsor, US
• Thomas He · Unionville, US
• Richard E. Peruggi · Glastonbury, US
• Richard E. Kulak · Bristol, US
• David W. Barrett · Hartland, US

Key dates

• Filing date: Apr 6, 1994
• Grant date: Jan 23, 1996
• Expiry date: Apr 6, 2014

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B13/12
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A horizontally stiff, but vertically yielding coupling between an elevator car door and an elevator hoistway door includes a brushless torque actuator which rotates a member (disposed on the elevator door) between a first, clearance position and a second, coupling position where it becomes wedged between the walls of a channel disposed on a hoistway door. The member may have rollers to make contact with the walls of the channel, or it may simply have sliding surfaces for contact with the channel.