Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Filaments
Reexamination Certificate
2007-04-03
2007-04-03
Staicovici, Stefan (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Filaments
C264S029300, C264S029700, C264S119000, C264S121000, C264S131000, C264S257000, C264S258000, C156S089260, C156S093000
Reexamination Certificate
active
10852992
ABSTRACT:
Preform for carbon-carbon composite part (55) comprising multiple layers of fibrous mats (51, 52, 53) wherein each mat (51, 52, 53) comprises random carbon-containing fibrous matrix (11) having polymeric binder distributed therein and wherein adjacent mats (51, 52, 53) are bound together by additional polymer binder, stitching, and interlocking tabs. Also, method of manufacturing thick multi-layer composite preform, by: providing optionally reconfigurable tool including perforated screen through which vacuum can be drawn; delivering chopped fibers (b) to the tool while drawing vacuum therethrough to form fibrous object; delivering binder (c) to the fibrous object; melting or curing the binder (d) to make a fibrous mat (51, 52, 53); assembling plurality of the fibrous mats (51, 52, 53) and additional binder into the shape of a preform (e); and heat-pressing the resulting mat assembly (f) into finished thick preform (55).
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Cipra Raymond J.
Fatz Alan E.
Gharbieh Nabil Abu
La Forest Mark L.
Siegmund Thomas H.
Birch & Stewart Kolasch & Birch, LLP
Honeywell International , Inc.
Staicovici Stefan
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