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:
Sep. 23, 2025
Filed:
Oct. 10, 2022
Applicant:
Kone Corporation, Helsinki, FI;
Inventors:
Matti Mustonen, Helsinki, FI;
Markku Jokinen, Helsinki, FI;
Assignee:
Kone Corporation, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B 13/14 (2006.01); G01L 5/06 (2006.01); G01M 13/028 (2019.01);
U.S. Cl.
CPC ...
B66B 13/143 (2013.01); G01L 5/06 (2013.01); G01M 13/028 (2013.01);
Abstract
A method for defining a tension of a belt of an automatic door includes exciting a resonant frequency of the belt to cause a vibration of the belt, obtaining motion data representing motion of an electric motor that moves the belt, defining vibration information representing the vibration of the belt based on the obtained motion data, and defining the tension of the belt based on the defined vibration in-formation and predefined characteristics of the belt. The method may be performed by a door drive unit and a computer program for defining a tension of a belt of an automatic door.