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:
Feb. 15, 2005
Filed:
Apr. 17, 2003
Pekka Perälä, Helsinki, FI;
Riitta Partanen-jokela, Hyvinkää, FI;
Seppo Suur-askola, Riihimäki, FI;
Pekka Torenius, Röykkä, FI;
Pekka Perälä, Helsinki, FI;
Riitta Partanen-Jokela, Hyvinkää, FI;
Seppo Suur-Askola, Riihimäki, FI;
Pekka Torenius, Röykkä, FI;
Kone Corporation, Helsinki, FI;
Abstract
The invention relates to a method for monitoring the condition of the door of an elevator and determining its need for maintenance, the door comprising a door mechanism, door panels and a door operator. The signals () of the control system of a door in good condition are measured and a set of characteristics descriptive of the operation of the door is generated from them. The signals () of the door control system are measured the operation during the opening and closing movements of the door is divided into stages according to which parts of the door are functioning at each stage. From the measured signals (), a set of characteristics descriptive of the operation of the door is generated. The set of characteristics thus generated is compared to the set of characteristics for a normal operating condition stored in memory, at least in one stage of operation. Based on the comparison of the two sets of characteristics, a diagnosis is performed to determine where and how the operation of the door and its components deviates from normal operation, and the result of the diagnosis is utilized to establish the need for servicing and a servicing date.