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:
Jul. 14, 2026
Filed:
Nov. 19, 2021
Fanuc Corporation, Yamanashi, JP;
Ryouta Shimizu, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
Provided are: a tension estimation device capable of accurately estimating the tension of a belt; a life evaluation device capable of accurately evaluating the life of a transmission mechanism, from the tension of the belt; and a robot system comprising these. The tension estimation device comprises: a transmission mechanism that transmits power via a belt; at least one motor disposed in the vicinity of the belt; a motor calorific value calculation unit that calculates the motor calorific value on the basis of at least one out of the current value or rotation speed for at least one motor; a frictional calorific value calculation unit that calculates the frictional calorific value of the transmission mechanism, on the basis of at least one among the current value or rotation speed for at least one motor and a friction coefficient for at least one shaft disposed in the vicinity of the belt; and a belt tension estimation unit that estimates the tension of the belt on the basis of the motor calorific value and the frictional calorific value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile