Cameron G Cofer

US Patent:

20020108699, Aug 15, 2002

Filed:

Aug 31, 2001

Appl. No.:

09/943677

Inventors:

Cameron Cofer - Gahanna OH, US
Dale McCoy - Granville OH, US

International Classification:

B31D001/00

US Classification:

156/176000, 428/292100, 118/405000

Abstract:

The present invention relates to electrically conductive impregnated fibers and their method of manufacture. More particularly, the invention relates to a method for forming electrically conductive fibers by impregnating conductive fibers with an organic wetting agent to form an impregnated fiber tow and subsequently sheathed. Such sheathed impregnated tows can be formed into a wide variety of products such as radio-frequency and electromagnetic shielded plastic articles.

US Patent:

6543576, Apr 8, 2003

Filed:

Jul 18, 2000

Appl. No.:

09/620279

Inventors:

Cameron Gorrell Cofer - Gahanna OH
Goran Knut Knutsson - Falkenberg, SE
Kunio Komori - Okazaki, JP
Yukihito Sakai - Okazaki, JP

Assignee:

Owens-Corning Fiberglas Technology, Inc. - Summit IL
Owens-Corning Sweden AB - Falkenburg
Futaba Industrial Company, Ltd. - Shi-Aichi

International Classification:

F01N 110

US Classification:

181252, 181256

Abstract:

A multiple layer fiber filled sound absorber and method of manufacturing the absorber are disclosed. The sound absorber includes an outer housing, a porous or perforated inner tube or housing defining a passageway through which a gas may flow, and two layers of sound absorbing material, such as fiberglass wool, is positioned between the housings. The sound absorbing material adjacent the inner housing is selected to be more heat resistant than the material farther away from the inner housing. The sound absorber is filled with the sound absorbing materials using a direct fill process in which continuous fibers are injected into the sound absorber. In preparation for filling, a partition is positioned between the housings to define two chambers. Each chamber is filled with one of the sound absorbing materials. The partition may then be removed from the sound absorber, or may be left in place (in which case the partition is preferably porous or perforated).