| 摘要 |
A novel filter assembly is provided herein. Such filter assembly includes an impervious elongated tubular housing having an internal substantially circul ar tubular surface, an inlet end and an outlet end. An elongated filter member is included which has opposed first and second surfaces, opposed longitudinal edges, and first and second ends. The elongated filter member is of length not greater than the housing. The elongated filter member is positioned within the housing with the opposed longitudinal edges in contact with, and sealably secured to, the internal tubular surface of the housing. A first barrier is interposed between the first surface of the filter member and the internal tubular surface of the housing adjacent the first end of the filter member. Finally, a second separate barrier is interposed between the second surface of the filter member and the internal tubular surface of the housing adjacent the second end of the filter member.
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