Filter screen structure

Details Filter screen structure Filter screen structure

2006-07-20

2009-12-01

Smith, Duane (Department: 1797)

Gas separation

Two or more separators

Plies or layers of different characteristics or orientation

C055S418000, C055S484000, C055S488000, C055S489000, C055S501000, C055S521000

Reexamination Certificate

active

07625417

ABSTRACT:
A filter screen structure includes a filter screen having air vents distributed thereon, and one or more layers of impedance material attached to the filter screen to increase an impedance of the filter screen and reduce the speed of air flowing through the filter screen. Through proper attachment of the impedance material to the filter screen in predetermined manners, the speed of air flown through the filter screen may be effectively adjusted to thereby regulate the volume of air flown through the filter screen.

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