Filter element having center piece and methods

Details Filter element having center piece and methods Filter element having center piece and methods

2005-02-08

2005-02-08

Spitzer, Robert H. (Department: 1724)

Gas separation

Combined or convertible

In motor vehicle

C055S498000, C055S502000, C055S511000, C055S521000, C055S527000, C055SDIG005

Reexamination Certificate

active

06852141

ABSTRACT:
A core construction for use in a filter element includes a tubular member having a wall with opposite first and second ends. The first end is adaptable for engagement with structure, such as a frame utilized with a filter element. The second end is also engageable with external structure, such as a handle. Preferably, a filter element is constructed by rolling a media construction around the core construction. The media construction includes a corrugated sheet secured to a flat sheet rolled around the core construction into a coiled construction. The coiled construction has inlet flutes and outlet flutes. Methods for using and assembling filter elements preferably use core constructions as described herein.

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