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:
Apr. 26, 2022
Filed:
Oct. 30, 2019
Seiko Epson Corporation, Tokyo, JP;
Akihiro Fujisawa, Matsumoto, JP;
Akitoshi Maeda, Shiojiri, JP;
Abstract
A robot system includes: a robot having a main shaft gear attached to a rotary shaft of a drive unit, a first countershaft gear meshing with the main shaft gear, a second countershaft gear meshing with the main shaft gear, and a third countershaft gear meshing with the main shaft gear. A number of teeth of the main shaft gear, a number of teeth of the first countershaft gear, a number of teeth of the second countershaft gear, and a number of teeth of the third countershaft gear are integers having no greatest common divisor other than 1. As first processing, a first number of rotations, which is a number of rotations of the main shaft gear, is derived based on a phase of the first countershaft gear and a phase of the second countershaft gear, and a second number of rotations, which is a number of rotations of the main shaft gear, is derived based on the phase of the second countershaft gear and a phase of the third countershaft gear, and the drive unit is stopped when the first number of rotations and the second number of rotations do not coincide with each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile