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. 06, 2022
Filed:
Aug. 18, 2021
Katsuyuki Totsu, Sumida-ku, JP;
Katsuyuki Totsu, Sumida-ku, JP;
Other;
Abstract
In an electric driver configured such that a driver bit is coupled to a drive output shaft of an electric motor via a clutch mechanism to perform screw tightening operations, an automatic screw tightening control method and a device are provided such that an appropriate screw tightened state in a screw tightening operation can be confirmed and determined, simply and reliably. In a screw tightening operation by an electric driver, at start of a predetermined screw tightening operation, a rotation amount of an electric motor at a clutch operation time by a clutch mechanism is detected, this rotation amount is set to be a target rotation amount and in the subsequent screw tightening operations, a rotation amount of the electric motor at the clutch operation time is detected and compared with the target rotation amount, respectively, so that acceptability of the respective screw tightened states is determined.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile