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:
May. 10, 2022
Filed:
Apr. 09, 2018
Applicant:
Makita Corporation, Anjo, JP;
Inventors:
Takaaki Osada, Anjo, JP;
Hirokatsu Yamamoto, Anjo, JP;
Goshi Ishikawa, Anjo, JP;
Kunihisa Shima, Anjo, JP;
Assignee:
MAKITA CORPORATION, Anjo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 21/00 (2006.01); B25F 5/00 (2006.01); B25B 21/02 (2006.01); B25B 23/147 (2006.01);
U.S. Cl.
CPC ...
B25B 21/008 (2013.01); B25B 21/02 (2013.01); B25B 21/023 (2013.01); B25B 21/026 (2013.01); B25B 23/1475 (2013.01); B25F 5/001 (2013.01);
Abstract
A rotary impact tool in one aspect of the present disclosure includes a motor, an impact mechanism, an impact detector, and a controller. The controller executes constant duty ratio control from when the motor is started until an impact is detected by the impact detector. The controller executes constant rotation speed control in response to detection of an impact by the impact detector.