초록 ▼

An air filter element includes structure for supporting a secondary air filter element mounted within it, such as a safety element. In certain arrangements, the air filter element includes a media pack having first and second ends and defining an open filter interior. A first open end cap is positio

An air filter element includes structure for supporting a secondary air filter element mounted within it, such as a safety element. In certain arrangements, the air filter element includes a media pack having first and second ends and defining an open filter interior. A first open end cap is positioned on the media pack first end. A second closed end cap is positioned on the media pack second end. The spacer construction has attachment structure and positioning structure. The attachment structure secures the spacer arrangement within the open filter interior, and the positioning structure extends from the attachment structure. In one illustrated embodiment, the spacer construction includes an insert embedded within the second closed end cap. In one illustration, the insert has a circular disk with feet and a centrally extending post with a fin arrangement.

대표청구항 ▼

[ We claim:] [1.] An air filter element comprising:(a) an inner liner having an end and defining an inner volume;(b) a spacer arrangement having attachment structure and positioning structure;(i) said attachment structure including a disk having at least one laterally projecting foot oriented adjace

[ We claim:] [1.] An air filter element comprising:(a) an inner liner having an end and defining an inner volume;(b) a spacer arrangement having attachment structure and positioning structure;(i) said attachment structure including a disk having at least one laterally projecting foot oriented adjacent to and extending over said inner liner end;(A) said disk defining a plurality of free-rise apertures;(c) an end cap comprising a polymeric material; said end cap having said inner liner end and said attachment structure foot embedded therein;(i) a portion of said end cap polymeric material projecting through said free-rise apertures.