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:
Jun. 14, 2016
Filed:
Dec. 20, 2012
Ratier Figeac, Figeac, FR;
Stanislas Tutaj, Faycelles, FR;
Bruno Petellaz, Beduer, FR;
RATIER FIGEAC, Figeac, FR;
Abstract
The invention relates to a propeller blade which comprises a hollow casing () forming an extrados () and an intrados () which extend from a blade shank to a free end in the direction of the span, and a framework which is arranged in the hollow casing () and comprises a box spar (), having a plurality of soles () in surface contact with the hollow casing () so as to provide structural support for the hollow casing (), and at least two cavities () which are spaced apart in the direction of the chord (), wherein the propeller blade further comprises at least two reinforcing spars () which extend between the framework and the hollow casing.