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:
Jan. 13, 2004
Filed:
Jul. 19, 2001
Applicant:
Inventor:
John A. Violette, Granby, CT (US);
Assignee:
Aero Composites, Inc., Doylestown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B64C 1/00 ; B63H 1/20 ;
U.S. Cl.
CPC ...
B64C 1/00 ; B63H 1/20 ;
Abstract
A composite blade assembly comprises a root portion and blade portion that is connected to the root portion. The root portion comprises inner and outer rings and the blade portion comprises at least one layer of composite material that is folded to form a loop. The inner ring is disposed in the loop and the outer ring is disposed outside the loop such that a portion of the loop is positioned between the inner and outer rings. In this manner, the loop portion is held in compression between the inner and outer rings at least when the composite blade assembly is subject to centrifugal force to thereby prevent separation of the root portion and blade portion.