Device in ventilation ducts provided with adjustable filter...

Details Device in ventilation ducts provided with adjustable filter... Device in ventilation ducts provided with adjustable filter...

2006-06-27

2006-06-27

Smith, Duane (Department: 1724)

Gas separation

Multiple bag type filters in chamber

C055S302000, C055S341400, C055S341700

Reexamination Certificate

active

07066974

ABSTRACT:
The invention relates to an arrangement of ventilation plants including ducts in which bag filters or similar bag-shaped filters (4) made of filter gauze are mounted. For individual adjustment of the air throughflow capacity of the filters the effective length of the filters is adjusted which, according to the invention, is carried out by an actuating member (23) which is axially pressed against the end portion of the filter (4) directly or by use of a casing of net material enclosing the filter, which casing has two ends axially fixed and is pursed up by a ring-shaped member of the actuating member (23).

REFERENCES:
patent: 3289393 (1966-12-01), Spotta
patent: 3605387 (1971-09-01), Margraf
patent: 4509960 (1985-04-01), Engel
patent: 5803954 (1998-09-01), Gunter et al.
patent: 97/20615 (1997-06-01), None

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