The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2001
Filed:
Aug. 12, 1998
Applicant:
Inventors:
Renaud Duval, Les Cheres, FR;
Eric Lherm, Rigneux-le-Franc, FR;
Assignee:
Messier-Bugatti, Villacoublay, FR;
Primary Examiner:
Int. Cl.
CPC ...
C04B 3/583 ; F16D 6/902 ;
U.S. Cl.
CPC ...
C04B 3/583 ; F16D 6/902 ;
Abstract
A three-dimensional fiber structure is formed by superposing layers of felt and by bonding them together by needling, then the structure is compressed to obtain a preform having a fiber volume fraction of not less than 20%. The preform is held in its compressed state by being impregnated with a liquid composition containing a bonding agent capable of bonding the fibers of the preform together. Thereafter, the preform consolidated in this way is densified, e.g. by chemical vapor infiltration.