Filter device and cleaning method therefor

Details Filter device and cleaning method therefor Filter device and cleaning method therefor

2007-10-02

2007-10-02

Smith, Duane (Department: 1724)

Gas separation: processes

Filtering

With cleaning of filter

C055S290000, C055S354000, C055S385600

Reexamination Certificate

active

10967425

ABSTRACT:
A filter device. The filter device comprises a first shaft, a second shaft separated from the first shaft by a predetermined distance, a filter looped around the first shaft and the second shaft and moved as the first and the second shafts rotate, and a brush contacting the filter. The brush removes filtered matter from the filter screen when an electronic device (projector) is started.

REFERENCES:
patent: 3487620 (1970-01-01), Klein et al.
patent: 3789587 (1974-02-01), Moorefield, II
patent: 4427422 (1984-01-01), Niederer
patent: 4661129 (1987-04-01), Nederman
patent: 4710207 (1987-12-01), Bodovsky et al.
patent: 5921399 (1999-07-01), Bakula et al.
patent: 6250476 (2001-06-01), Kroon et al.
patent: 6368393 (2002-04-01), Hironaka
patent: 6846421 (2005-01-01), Bratten

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