The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2009
Filed:
Feb. 07, 2008
Jari Österman, Riihimäki, FI;
Seppo Suur-askola, Mommila, FI;
Jarmo Myllynen, Hyvinkää, FI;
Simo Mäkimattila, Espoo, FI;
Jukka Korpela, Hyvinkää, FI;
Joni Kiiski, Klaukkala, FI;
Jari Österman, Riihimäki, FI;
Seppo Suur-Askola, Mommila, FI;
Jarmo Myllynen, Hyvinkää, FI;
Simo Mäkimattila, Espoo, FI;
Jukka Korpela, Hyvinkää, FI;
Joni Kiiski, Klaukkala, FI;
Kone Corporation, Helsinki, FI;
Abstract
In the invention a method is presented for ensuring operating safety in an elevator system, an elevator system, and a safety device of an elevator system. The elevator system includes at least an elevator car, elevator ropes, an elevator motor, a traction sheave and at least two holding brakes, which holding brakes are arranged to prevent movement of the elevator car when the elevator is stopped. According to the invention the first holding brake is engaged at the end of an elevator run, and the other holding brakes are engaged with a delay. When one holding brake is engaged, the state of motion of the elevator and any slipping of the brake is monitored. If the brake is detected as slipping, a procedure for preventing a hazardous situation is performed.