06586054 is referenced by 24 patents.

A process and apparatus for producing fiber reinforced resin structures using vacuum assisted resin transfer molding technology, wherein the apparatus and process employ a first fluid impervious flexible sheet containing therein a resin port; a fiber containing preform; a primary vacuum line; a resin channeling means; and a secondary vacuum line. The fluid impervious flexible sheet is placed over or around the fiber containing preform to form a chamber to which the primary vacuum line is connected. The resin channeling means is positioned on top of the fluid impervious flexible sheet, exterior to the chamber containing the preform in a fashion so as to form a pocket between or around the resin channeling means and said fluid impervious flexible sheet to which the secondary vacuum is applied. Activation of the secondary vacuum causes formation of channels in the fluid impervious flexible sheet. These channels increase the speed and efficiency of resin impregnation of the fiber containing preform.

Title
Apparatus and method for selectively distributing and controlling a means for impregnation of fibrous articles
Application Number
9/840693
Publication Number
6586054 (B2)
Application Date
April 24, 2001
Publication Date
July 1, 2003
Inventor
Shaw M Walsh
Baltimore
MD, US
Agent
William Randolph
US
Paul S Clohan
US
Assignee
The United States of America represented by the Secretary of the Army
DC, US
IPC
B05D 1/18
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