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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.:

US 9457435 B1

PDFFull Text
Date of Patent:
Oct. 04, 2016

Filed:

Jan. 24, 2013

Method for producing a propeller blade from a composite material

Applicants:

Snecma, Paris, FR;

Safran, Paris, FR;

Inventors:

Richard Mathon, Brunoy, FR;

Olivier Foussard, Etiolles, FR;

Yann Marchal, Melun, FR;

Franck Bernard Leon Varin, Voulangis, FR;

Assignees:

SNECMA, Paris, FR;

SAFRAN, Paris, FR;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jason L Vaughan

Int. Cl.
CPC ...
B23P 15/04 (2006.01); B29C 70/48 (2006.01); B29C 70/54 (2006.01); B29C 70/86 (2006.01); B29D 99/00 (2010.01); B29C 70/08 (2006.01); B64C 11/26 (2006.01); B64F 5/00 (2006.01); B29C 31/08 (2006.01); B29C 70/24 (2006.01); B29L 31/08 (2006.01); B64D 27/00 (2006.01);
U.S. Cl.
CPC ...
B23P 15/04 (2013.01); B29C 31/085 (2013.01); B29C 70/086 (2013.01); B29C 70/48 (2013.01); B29C 70/541 (2013.01); B29C 70/86 (2013.01); B29D 99/0025 (2013.01); B64C 11/26 (2013.01); B64F 5/0009 (2013.01); B29C 31/08 (2013.01); B29C 70/24 (2013.01); B29L 2031/08 (2013.01); B64D 2027/005 (2013.01); Y02T 50/66 (2013.01); Y10T 29/49332 (2015.01); Y10T 29/49336 (2015.01); Y10T 29/49337 (2015.01);
Abstract

A propeller blade, which can belong to a fan without covering by an external casing, includes two portions fitted into one another and of different materials, generally composite, to resist various stresses, heating coming from a rotor or impacts of solid bodies. An internal portion includes a blade core, a blade shank and possibly a foam lining, and a preform of an outside portion is assembled to it by surrounding it closely before being completely formed by receiving its resin, which is placed into polymerization. A method for producing the propeller blade guarantees good assembly of the portions without defects of form, damage or deformation of a fiber weave.

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