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:
Dec. 20, 2022
Filed:
Dec. 08, 2020
Makita Corporation, Anjo, JP;
Shunta Mizuno, Anjo, JP;
Yuki Kawai, Anjo, JP;
MAKITA CORPORATION, Anjo, JP;
Abstract
A rebar tying tool includes: a feed mechanism (), which includes a first brushless motor () and performs an advancing process that advances a wire (W) and a draw-back process that draws back the wire (W); a first inverter circuit (), which is electrically connected to the first brushless motor; and a control unit (), which controls the first brushless motor via the first inverter circuit. The first brushless motor comprises a first Hall-effect sensor (), which is disposed on a first sensor board (). In the advancing process, the control unit performs lead-angle control on the first brushless motor at a first lead angle. In the draw-back process, the control unit performs lead-angle control on the first brushless motor at a second lead angle. The first lead angle is set to be larger than the second lead angle.