Electric blower

Details Electric blower Electric blower

2005-10-31

2010-12-07

Kramer, Devon C (Department: 3746)

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

C415S206000, C415S211200

Reexamination Certificate

active

07845917

ABSTRACT:
An electric blower includes a motor having a stator on which field windings are wound, a rotor facing the stator, and a bracket covering the stator and the rotor. The electric blower further includes a fan mounted to a shaft coupled to the rotor, and an air guide having a diffuser provided to the outer circumference of the fan and formed of a plurality of stationary blades adjacent to each other. The electric blower still includes a fan case having openings at its outer circumference for discharging a part of the air having passed the diffuser to the outside, and protrusions having a brim for covering a part of the openings. The foregoing structure allows the air blower to cool the motor with airflow generated by the fan.

REFERENCES:
patent: 4231221 (1980-11-01), Mathner et al.
patent: D533936 (2006-12-01), Tateishi et al.
patent: 2003/0147746 (2003-08-01), Poon et al.
patent: 2004/0123482 (2004-07-01), Tokuda et al.
patent: 03-023399 (1991-01-01), None
patent: 06-1000195 (1994-12-01), None
patent: 10-026099 (1998-01-01), None
patent: 2001-012395 (2001-01-01), None
patent: 2001-271794 (2001-10-01), None
patent: 2003-135319 (2003-05-01), None
patent: 2004-169592 (2004-06-01), None
patent: 2004169592 (2004-06-01), None
International Search Report for Application PCT/JP2005/019972, dated Jan. 24, 2006.

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