Support for an air filter

Details Support for an air filter Support for an air filter

2005-07-08

2008-07-29

Griffin, Walter D. (Department: 1797)

Gas separation

With means securing or retaining separating media

C210S167050, C210S232000

Reexamination Certificate

active

07404838

ABSTRACT:
An internal support for an air filter includes a helical member which is shaped and dimensioned to fit against the inside surface of the air filter to provide structural support which prevents the air filter from inwardly collapsing. In another embodiment of the invention, a plurality of support rings are installed in spaced apart parallel relationship inside the air filter.

REFERENCES:
patent: 2460084 (1949-01-01), Hebo
patent: 2819800 (1958-01-01), Goodloe
patent: 3816978 (1974-06-01), O'Dell
patent: 3827566 (1974-08-01), Ponce
patent: 4153552 (1979-05-01), Muther
patent: 4244718 (1981-01-01), Noddin
patent: 4276069 (1981-06-01), Miller
patent: 5053129 (1991-10-01), Kitson
patent: 6099729 (2000-08-01), Cella et al.

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