Elevator machine brake delay control

US11040848B2 · kind B2 · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Camilo Cardona · Middletown, US
• Prasanna Nagarajan · Farmington, US
• Antoine Adrian Blanchard · Saint-Jean-de-Braye, FR
• Emmanuel Convard · La Bussière, FR
• Gregor Stricker · Berlin, DE
• Michael Peters · Berlin, DE

Key dates

• Filing date: Mar 27, 2018
• Grant date: Jun 22, 2021
• Expiry date: Nov 19, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B2201/00
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

An illustrative elevator system includes an elevator car, a machine including a motor that provides a motive force for moving the elevator car along a travel path and a brake that resists movement of the elevator car, and a brake controller. The brake controller is configured to determine when the elevator car is within a selected range of at least one end of the travel path. The brake controller inhibits a delay in application of the brake when the elevator car is within the selected range and permits a delay in application of the brake when the elevator car is outside of the selected range.