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:
Dec. 06, 2005
Filed:
Sep. 09, 2003
Yutaka Yamada, Osaka, JP;
Hiroshi Iwano, Hikone, JP;
Yutaka Yamada, Osaka, JP;
Hiroshi Iwano, Hikone, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
An electric power tool incorporating a single fan that provides efficient cooling of the motor and transmission while reducing the cost and size of the power tool. The power tool includes a speed reduction transmission provided within a housing between the motor and a chuck which is located at the front end of the power tool. The rotation of the fan cools the motor and the transmission by drawing in external air from intake ports formed in the housing, and collectively exhausts the warmed cooling air through exhaust ports formed in the housing. The power tool includes a fan, located between the motor and the transmission, that is constructed to draw in two separate streams of cooling air from air intake ports located adjacent to the motor and the transmission, and to exhaust used cooling air through exhaust ports located adjacent to the fan.