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:
Feb. 25, 2020
Filed:
Sep. 29, 2015
Applicant:
Hitachi Koki Co., Ltd., Tokyo, JP;
Inventor:
Atsuyuki Kikuchi, Ibaraki, JP;
Assignee:
KOKI HOLDINGS CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25D 16/00 (2006.01); B25D 11/04 (2006.01);
U.S. Cl.
CPC ...
B25D 16/00 (2013.01); B25D 11/04 (2013.01); B25D 2216/0015 (2013.01); B25D 2216/0023 (2013.01); B25D 2250/201 (2013.01);
Abstract
Provided is an impact tool which can perform control in accordance with working situations. The impact tool converts a torque of a brushless motor into a striking force and applies it to a tip tool. The impact tool includes: a motor control unit which makes detection about whether the tip tool is pressed against an object during the rotation of the brushless motor; and a motor control unit which performs speed increase control for increasing the rotational speed of the brushless motor when a state of pressing the tip tool against the object has been detected continuously for a predetermined time.