Filter element

Details Filter element Filter element

2007-02-07

2009-11-03

Smith, Duane (Department: 1797)

Gas separation

With means securing or retaining separating media

Unit or cohesive sheet-like media in flow line or frame

C055S498000, C055S521000, C055S529000, C055SDIG042, C055S361000, C055S380000, C055S381000, C210S493500, C210S509000, C210S483000, C210S487000, C210S493200, C210S493300, C210S493400, C210S510100

Reexamination Certificate

active

07611559

ABSTRACT:
A filter element (1) with a tubular folded bag (2) of folded filter material, which has a plurality of fold blades (3) adjacent each other in the longitudinal direction (10) of the folded bag (2) a closure cover (4) is attached at at least one axial end (7) of the folded bag (2). In order to provide a filter element which can be bent to any desired curved form while maintaining a high degree of filtration performance, and can be produced in a cost effective manner, the fold blades (3) of a folded bag (2) are provided with a combination of diagonal folds extending at an angle relative to each other such that the fold blades (3) in the longitudinal direction (10) of the folded bag extend back and forth and thereby form a three-dimensional crown structure (18). At least the outer margin of the closure cover (4) has a form corresponding to the crown structure (18) of the fold blades (3).

REFERENCES:
patent: 2556521 (1951-06-01), Chase
patent: 2654440 (1953-10-01), Robinson
patent: 3491891 (1970-01-01), Krizman, Jr.
patent: 4200444 (1980-04-01), Witchell
patent: 4640779 (1987-02-01), Taki et al.
patent: 5851250 (1998-12-01), Sugie et al.
patent: 27 25 437 (1978-12-01), None

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