Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Starting material is nonhollow planar finite length preform...
Reexamination Certificate
2011-06-28
2011-06-28
Johnson, Christina (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Starting material is nonhollow planar finite length preform...
C156S285000
Reexamination Certificate
active
07968041
ABSTRACT:
A method and a tool component for forming in an article of fiber-reinforced composite material at least one locally placed, sharply curved portion. A separate, substantially rigid pressure-transferring element configured with a profile corresponding to the at least one curved portion is placed over the laminate at the location of the at least one locally placed, sharply curved portion of the mold surface. A flexible membrane placed over the laminate and over outer, separated surfaces of the pressure-transferring element is evacuated to depress the laminate to fully conform to the shape of the mold surface.
REFERENCES:
patent: 6083448 (2000-07-01), Henrio
patent: 2006/0068170 (2006-03-01), Hanson
patent: 0860268 (1998-08-01), None
patent: 0992336 (2000-04-01), None
patent: WO-93/11922 (1993-06-01), None
European Search Report—Feb. 27, 2008.
Turesson Ingemar
Westerdahl Anders
Franklin Eric J.
Hauth Galen
Johnson Christina
SAAB AB
Venable LLP
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