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)
NISHIKAWA TOMOMASA (JP)
NAKANO YOSHIHIRO (JP)
UCHIDA HIROKI (JP)
Application Number:
PCT/JP2012/005144
Publication Date:
February 28, 2013
Filing Date:
August 13, 2012
Export Citation:
Assignee:
HITACHI KOKI KK (JP)
HARADA TETSUHIRO (JP)
NISHIKAWA TOMOMASA (JP)
NAKANO YOSHIHIRO (JP)
UCHIDA HIROKI (JP)
HARADA TETSUHIRO (JP)
NISHIKAWA TOMOMASA (JP)
NAKANO YOSHIHIRO (JP)
UCHIDA HIROKI (JP)
International Classes:
B25F5/00
Foreign References:
| DE102005052426A1 | 2007-05-10 | |||
| DE102008009277A1 | 2009-08-20 | |||
| DE19614580A1 | 1996-10-17 | |||
| US20080302551A1 | 2008-12-11 | |||
| GB2383007A | 2003-06-18 | |||
| JP2010105130A | 2010-05-13 |
Attorney, Agent or Firm:
KITAZAWA, Kazuhiro et al. (31-14 Yushima 2-chome, Bunkyo-k, Tokyo 34, JP)
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Claims: