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:
Jun. 02, 2015
Filed:
May. 20, 2009
Katsuhiro Oomori, Hitachinaka, JP;
Junichi Toukairin, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Kazutaka Iwata, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
Katsuhiro Oomori, Hitachinaka, JP;
Junichi Toukairin, Hitachinaka, JP;
Nobuhiro Takano, Hitachinaka, JP;
Kazutaka Iwata, Hitachinaka, JP;
Tomomasa Nishikawa, Hitachinaka, JP;
HITACHI KOKI CO., LTD., Tokyo, JP;
Abstract
According to an aspect of the present invention, there is provided a power tool including: a brushless motor; switching elements that drive the brushless motor; a circuit board on which the switching elements are mounted; a transmission portion that transmits a driving force of the brushless motor; and a housing that houses the brushless motor, the switching elements, the circuit board and the transmission portion therein, wherein the switching elements include semiconductor elements each having terminals on a bottom surface thereof, and wherein the switching elements are surface mounted on the circuit board.