Dust collection apparatus

Details Dust collection apparatus Dust collection apparatus

1991-11-04

1992-11-03

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

153121, 15315, 981154, 285185, A47L 538

Patent

active

051597373

ABSTRACT:
A dust collection apparatus comprising a base duct, an adapter duct rotatably mounted on the upper end of the base duct, a first duct arm pivotaly connected to the upper end of the adapter duct and made of steel plates, a first connecting mechanism for connecting the adapter duct and the first duct arm, and second drive means for swinging the first duct arm. The first connecting mechanism comprises cylindrical holders projecting from the adapter duct, two branches of substantially U-shape provided with openings in which the cylindrical holders are inserted rotatably, air tight seals positioned between the openings of the branches and the cylindrical holders, a shaft penetrating the two branches and the adapter duct for rotatably connecting the first duct arm to the adapter duct, and support means arranged in the adapter duct for supporting the shaft.

REFERENCES:
patent: 2772438 (1956-12-01), Diaz
patent: 3150404 (1964-09-01), Johnson
patent: 3506998 (1970-04-01), Perry
patent: 3594898 (1971-07-01), Atkinson
patent: 4019219 (1977-04-01), Willenborg
patent: 4379548 (1983-04-01), Boshoven
patent: 4540202 (1985-09-01), Amphoux et al.
patent: 4699046 (1987-10-01), Bellieni
patent: 4860644 (1989-08-01), Kohl et al.

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