Power tool with dust collection function

Details Power tool with dust collection function Power tool with dust collection function

2007-06-26

2007-06-26

Morgan, Eileen P. (Department: 3723)

Abrading

Accessory

Guard or housing

C451S357000, C451S359000

Reexamination Certificate

active

11374069

ABSTRACT:
A power tool with a dust collection function has a motor, a dust collection fan, and a cover member. The dust collection fan is driven by the motor for collecting a dust. The cover member covers the dust collection fan. The cover member provides an air passage surrounding the dust collection fan in a circumferential direction of the dust collection fan. The cover member is configured and arranged to provide a lower pressure section and another section in the air passage when the dust collection fan rotates. The lower pressure section provides a lower static pressure than the another section. Accordingly, the power tool ensures highly efficiency for collecting a dust particle.

REFERENCES:
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patent: 4531329 (1985-07-01), Huber
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patent: 6224471 (2001-05-01), Clowers et al.
patent: 6758731 (2004-07-01), Dutterer et al.
patent: 2004/0132393 (2004-07-01), Reich et al.
patent: 06-226709 (1994-08-01), None
patent: 09-254033 (1997-09-01), None
patent: 2003-053654 (2003-02-01), None

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