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:
Jun. 16, 2015
Filed:
Aug. 04, 2010
Kenji Utsunomiya, Tokyo, JP;
Kenji Utsunomiya, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A control device of an elevator door includes moving quantity detector which detects the moving quantity of a driving device of the door for opening and closing, and a driving force detector which detects a driving torque or driving force of the driving device. An equivalent stiffness calculator estimates the equivalent stiffness of an object in contact from an output signal of the moving quantity detector and an output signal of the driving force detector. The door is reversed or stopped by comparing the estimated equivalent stiffness of an object in contact as a contact determination parameter with a threshold value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile