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:
Jan. 10, 2017
Filed:
Aug. 10, 2012
Tomomasa Nishikawa, Hitachinaka, JP;
Tetsuhiro Harada, Hitachinaka, JP;
Hiroki Uchida, Hitachinaka, JP;
Yoshihiro Nakano, Hitachinaka, JP;
Hiroki Tsunoda, Hitachinaka, JP;
Katsuaki Sukegawa, Hitachinaka, JP;
Kazuhiko Morita, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Tetsuhiro Harada, Hitachinaka, JP;
Hiroki Uchida, Hitachinaka, JP;
Yoshihiro Nakano, Hitachinaka, JP;
Hiroki Tsunoda, Hitachinaka, JP;
Katsuaki Sukegawa, Hitachinaka, JP;
Kazuhiko Morita, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A power tool () and a method of producing such power tool capable of improving dust proof performance with respect to a circuit board () and a stator coil (B), and capable of securing cooling performance to the circuit board. The power tool includes a brushless motor () having a hollow stator (), a rotor () positioned in an internal space of the stator, and a motor driver circuit connected to the stator. The stator includes a coil (B) electrically connected to the motor driver circuit. The coil is coated with a coating agent (D), and the motor driver circuit is covered with an insulation cover member (D).