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:
Jul. 28, 1992
Filed:
Mar. 13, 1991
Francois Barbaza, Pauillac, FR;
Societe Europeenne de Propulsion, Suresnes, FR;
Abstract
A masking is provided along the position of one each folding or separation line (45.sub.1 to 45.sub.6), in order to prevent the infiltration of the matrix material into the or each masked zone of the preform. After densification of the preform by chemical vapor deposition and removal of the masking, the or each masked zone of the preform constitutes a flexible bond integrated to the densified preform. Advantageously, the masking of the preform is maintained during a first densification phase until the unmasked parts (40.sub.1 to 40.sub.7) are consolidated. The masking is then removed to obtain flexible bonds integrated to the consolidated preform, allowing the latter to be brought to a shape corresponding to the component by folding along the lines corresponding to the flexible bonds, after which the densification is continued. Alternatively, the masking can be removed only after the final densification to obtain a composite component having one, or a number, of articulations.