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. 16, 2021
Filed:
Feb. 23, 2015
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Hiroshi Miyazaki, Mie, JP;
Hiroyuki Tsubakimoto, Mie, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 23/147 (2006.01); B25B 21/02 (2006.01);
U.S. Cl.
CPC ...
B25B 23/1475 (2013.01); B25B 21/02 (2013.01);
Abstract
An impact rotary tool comprises a driving source that is supplied with power from a battery pack and that rotates a hammer via a drive shaft, and a controlling unit that controls the driving source. The controlling unit controls the driving source so that the striking force is limited by PWM control when the battery pack voltage is high and the striking force is maintained even when the battery pack voltage decreases.