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:
Apr. 11, 1978
Filed:
Mar. 21, 1975
James L Braswell, Hurst, TX (US);
Cecil E Covington, Hurst, TX (US);
Nolan B Phillips, Fort Worth, TX (US);
Reggie J Tomerlin, Cleburne, TX (US);
Robert M Wohlfeld, Dallas, TX (US);
Textron, Inc., Providence, RI (US);
Abstract
A composite rotor blade has a nose spar of fiber reinforced plastic with the fibers extending spanwise the length of the spar and at the root encircling a transverse hub attachment structure with the spar provided with a tubular inner liner of cross ply filament wound fiberglass forming a closure for the nose spar with a blad afterbody structure including skins for integrating the afterbody with the nose spar and liner. Preferably the spar has an inner liner and an outer liner both of cross ply filament wound fiberglass in multi layers. The blade afterbody structure includes honeycomb filler having cells extending in the direction of blade thickness.