Elevator with adjustable buffer length

US9517919B2 · kind B2 · utility

Assignee

• Kone Corporation · FI

Inventors

• Jaakko Kalliomäki · Vantaa, FI
• Mikko Puranen · Helsinki, FI

Key dates

• Filing date: May 19, 2015
• Grant date: Dec 13, 2016
• Expiry date: May 19, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B5/282
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

An elevator includes at least one elevator car driving along an elevator shaft as well as an elevator control measuring the car position. The elevator further includes a buffer in the shaft pit, whose length is adjustable in response to the car position and car speed. Via this measure, the shaft pit can be reduced in high speed elevator requiring large buffer lengths.