Air filter element and method of producing the same

Details Air filter element and method of producing the same Air filter element and method of producing the same

2006-08-01

2006-08-01

Hopkins, Robert A. (Department: 1724)

Gas separation

With means securing or retaining separating media

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

C055S502000, C055S510000, C264S268000

Reexamination Certificate

active

07083661

ABSTRACT:
There is provided an air filter element which is used by fitting a central opening in its end plate on a cylindrical portion projecting into a casing, wherein the air filter element has a novel seal construction (end plate). An end plate (10) closing the end surface of a hollow cylindrical filter portion (2) includes a soft inner peripheral seal portion (11) capable of sticking to the outer surface of a cylindrical member (33) and a rigid closure portion (13) which is disposed on the outer periphery side of the inner peripheral seal portion and in which the end surface of the filter portion is embedded, the end plate being of composite construction in which the inner peripheral seal portion (11) and the closure portion (13) are integrally molded. On the outer periphery side of the inner peripheral seal portion (11), a groove (12) axially extending from an end surface (10a) of the end plate is formed along the opening. The inner peripheral seal portion (11) effects reliable center seal with respect to the cylindrical member (33), while the closure portion (13) on the outside thereof improves the rigidity of the air filter element.

REFERENCES:
patent: 3372073 (1968-03-01), Cutler
patent: 5484466 (1996-01-01), Brown et al.
patent: 5556440 (1996-09-01), Mullins et al.
patent: 6355077 (2002-03-01), Chittenden et al.
patent: 6652614 (2003-11-01), Gieseke et al.
patent: 6706087 (2004-03-01), Gebler et al.
Microfilm of the specification and drawing annexed to the request of Japanese Utility Model Appiication No. 11483/1978 (Laid open No. 115679/1979) (Toyo Element Kogyo K.K.), Aug. 14, 1979 p. 2, lines 9 to 16.

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