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. 18, 2020
Filed:
Aug. 13, 2012
Tetsuhiro Harada, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Yoshihiro Nakano, Hitachinaka, JP;
Hiroki Uchida, Hitachinaka, JP;
Tetsuhiro Harada, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Yoshihiro Nakano, Hitachinaka, JP;
Hiroki Uchida, Hitachinaka, JP;
Koki Holdings Co., Ltd., Tokyo, JP;
Abstract
A power tool includes: a motor; a fan driven by the motor and defining an axis and a radial direction; and a housing for accommodating the motor and the fan therein, the housing including: a peripheral wall formed with a ventilation hole; and a grid partly covering the ventilation hole, the ventilation hole being positioned adjacent to the fan and having a shape defined by a circumferential surface, the grid including at least one elongated portion extending in a longitudinal direction perpendicular to the radial direction, and a distance from the axis of the fan to the circumferential surface is different from a distance from the axis of the fan to one elongated portion in the radial direction of the fan.