Hand tool comprising a dust suction device

Details Hand tool comprising a dust suction device Hand tool comprising a dust suction device

2005-02-01

2005-02-01

Nguyen, Dung Van (Department: 3723)

Abrading

Accessory

Guard or housing

C451S456000, C451S449000

Reexamination Certificate

active

06848985

ABSTRACT:
The dust removal device comprises a fan (18), a dust collection receptacle (24), and a suction passage (28). The dust collection receptacle (24) equipped with a dust filter (26) is located in the path of air flow (34, 36) between the suction passage (28) and the fan (18). The dust is therefore filtered out of the air stream before it reaches the fan, which prevents dust-induced wear. It is also possible to use the same fan for engine cooling as well as dust removal.

REFERENCES:
patent: 3850254 (1974-11-01), Hirdes
patent: 5113951 (1992-05-01), Houben et al.
patent: 5129467 (1992-07-01), Watanabe et al.
patent: 5467835 (1995-11-01), Obermeier et al.
patent: 196 53 330 (1998-06-01), None
patent: 0 470 046 (1992-02-01), None
patent: 0 579 964 (1994-01-01), None
patent: 2 247 852 (1992-03-01), None

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