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:
Sep. 22, 1998
Filed:
Sep. 17, 1996
Francis Edward Byrnes, White Plains, NY (US);
Robert James Milne, Litchfield, CT (US);
Sikorsky Aircraft Corporation, Stratford, CT (US);
Abstract
A composite rotating swashplate for a helicopter rotor system which includes rotor blades with associated control rods. The control rods control the pitch of the rotor blades. The composite rotating swashplate according to the present invention includes an outer tubular ring with an inner tubular ring located within the outer ring. The outer ring is made from braids of tri-axial graphite fibers interwoven with unidirectional plies. The inner tubular ring is made from braided .+-.45 degree graphite fibers. A support ring is located within the outer ring and external to an inboard periphery of the inner tubular ring. A plurality of apertures are formed through the outer and inner rings. The apertures are adapted to receive the terminal ends of the control rods. Mounting bolts extend through at least one wall of the outer and inner rings and attach the terminal ends of the control rods to the swashplate.