Gas separation – Combined or convertible
Patent
1998-02-17
2000-05-16
Simmons, David A.
Gas separation
Combined or convertible
553857, 4283077, 4283084, 428422, B32B 514
Patent
active
06063152&
ABSTRACT:
A novel air filter is provided for a vented area for minimizing or limiting electromagnetic interference (EMI) leakage and for providing ventilation, by allowing the egress of gases out of the vented area, and air filtration, by preventing or deterring the ingress of undesirable environmental conditions into the vented area. Such a vented area may be cabinet having a plurality of walls which houses electronic systems or subsystems. The air filter includes a dimple provided in the surrounding surface of the vented area. The dimple has a ventilating port provided therethrough. The air filter further includes a non-woven material covering the ventilating port. The non-woven material allows the passage of gases therethrough and substantially prevents the passage of liquid therethrough. The size of the ventilating port determines the amount of EMI leakage allowed through the air filter. The non-woven material is preferably adhesively attached to the surrounding surface.
REFERENCES:
patent: 5506047 (1996-04-01), Hedrick et al.
patent: 5641438 (1997-06-01), Bunyan et al.
patent: 5796593 (1998-08-01), Mills et al.
patent: 5798485 (1998-08-01), Rohde et al.
patent: 5825634 (1998-10-01), Moorehead, Jr.
"Design Guide to the Selection and Application of EMI Shielding Materials", Copyright 1982, Sections 1-3, TECKNIT, EMI Shielding Products, Cranford New Jersey.
Marconi Communications Inc.
Pham Minh-Chau T.
Simmons David A.
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