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:
Feb. 06, 1990
Filed:
Jul. 23, 1986
Edward A Beno, Stratford, CT (US);
William L Noehren, Trumbull, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
An external composite wrap (34) of composite fibers (36) is added to the flap flexure portion (14) of a flexbeam (10), which is composed of predominantly unidirectional fibers (32) extending along the length of the flexbeam in (vertically) stacked layers (31). The fibers of the external wrap are disposed at an angle to the unidirectional ply fibers. The external wrap serves to reduce the interlaminar shear stresses in the unidirectional plies and increase the torsional stiffness of the flap flexure portion without significantly increasing the flexural stiffness of the flexbeam. The latter is accomplished by tailoring the thickness of the external wrap relative to flexbeam station (longitudinal position) and optimizing the angle of the external wrap fibers.