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:
Jan. 16, 2018
Filed:
Oct. 15, 2014
Jari Helvilä, Hyvinää, FI;
Sakari Korvenranta, Hyvinkaa, FI;
Petter Martonen, Shanghai, CN;
Petteri Valjus, Helsinki, FI;
Jukka Laitinen, Vantaa, FI;
Lauri Stolt, Helsinki, FI;
Jari Helvilä, Hyvinää, FI;
Sakari Korvenranta, Hyvinkaa, FI;
Petter Martonen, Shanghai, CN;
Petteri Valjus, Helsinki, FI;
Jukka Laitinen, Vantaa, FI;
Lauri Stolt, Helsinki, FI;
Kone Corporation, Helsinki, FI;
Abstract
Stall condition in an elevator is potentially dangerous situation if it causes slack to the ropes of the elevator. In such situation a counterweight or elevator car does not move even if the hoisting machine is still operating. This situation may be prevented by stopping the elevator as early as possible after detecting such stall condition. The detection of the stall condition is based on monitoring the torque generated by the hoisting machine of the elevator. When rapid change in the torque is detected a stall condition is suspected. The elevator may be stopped or an alarm may be launched when the stall condition is suspected.