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Patent Searching and Data


Title:
POWER TOOL
Document Type and Number:
WIPO Patent Application WO/2013/027372
Kind Code:
A1
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.

Inventors:
HARADA TETSUHIRO (JP)
NISHIKAWA TOMOMASA (JP)
NAKANO YOSHIHIRO (JP)
UCHIDA HIROKI (JP)
Application Number:
JP2012/005144
Publication Date:
February 28, 2013
Filing Date:
August 13, 2012
Export Citation:
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Assignee:
HITACHI KOKI KK (JP)
HARADA TETSUHIRO (JP)
NISHIKAWA TOMOMASA (JP)
NAKANO YOSHIHIRO (JP)
UCHIDA HIROKI (JP)
International Classes:
B25F5/00
Foreign References:
DE102005052426A12007-05-10
DE102008009277A12009-08-20
DE19614580A11996-10-17
US20080302551A12008-12-11
GB2383007A2003-06-18
JP2010105130A2010-05-13
Attorney, Agent or Firm:
KITAZAWA, Kazuhiro et al. (31-14 Yushima 2-chome, Bunkyo-k, Tokyo 34, JP)
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Claims: