McDermott Will & Emery LLP
Power tool
A power tool includes a housing, a brushless motor, and a cover member. The housing has an air intake hole and an air exhaust hole formed therein, the housing having an inner surface. The brushless motor has an outer surface disposed in the housing, a first endface near the air intake hole, and a second endface near the air exhaust hole. The cover member covers at least one of the first endface and the second endface for preventing dust from entering the brushless motor. The inner surface of the housing and outer surface of the brushless motor define a circulation path providing communication between the air intake hole and the air exhaust hole.
HITACHI KOKI CO., LTD.
H H H H B
H02K H02K H02K H02K B25F
inventional inventional inventional additional inventional
Kazutaka Katsuhiro Yoshihiro Kenichirou
Iwata Oomori Komuro Yoshida