Deceleration time for an elevator car

US5889238A · kind A · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Christoph M. Ernecke · Berlin, DE
• Gunter Blechschmidt · Berlin, DE
• Peter Herkel · Berlin, DE
• Alberto Vecchiotti · Berlin, DE

Key dates

• Filing date: Nov 12, 1996
• Grant date: Mar 30, 1999
• Expiry date: Nov 12, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B1/50
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method of adjusting an elevator speed comprising the steps of determining a desired creep period, determining an actual creep period, determining a difference between the desired creep period and the actual creep period, determining a deceleration time for minimizing the difference between the desired creep period and the actual creep period, and adjusting the elevator speed in response to the deceleration time.