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. 07, 1992
Filed:
Dec. 24, 1990
Applicant:
Inventors:
Charles E Carlson, North Shallott, NC (US);
John A Violette, Granby, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C / ;
U.S. Cl.
CPC ...
416226 ; 4162 / ; 2988971 ;
Abstract
A composite axial flow rotary machine blade (10) and method of blade construction is disclosed. A substantially full length composite spar (30) is spanwisely disposed within an airfoil planform (18) which supports an airfoil surface (11a). A pad of reinforcing fibers (40) is sandwiched between the spar's periphery and the airfoil surfaces' proximate inner surfaces (24a, b) corresponding to the pressure (22) and suction (24) sides of the airfoil planform in a spanwise distribution. A quantity of structural foam filler (50) is disposed through the balance of the blade's cavity (16).