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:
Dec. 20, 1996
Philip H LeMasurier, New Fairfield, CT (US);
Sikorsky Aircraft Corporation, Stratford, CT (US);
Abstract
A drive shaft casing for a ducted fan anti-torque device for reducing the radar signature of the drive shaft, while concurrently having a minimal impact on the drive shaft's acoustic signature. The casing is formed from radar absorbing material and is disposed about the drive shaft such that the drive shaft casing comprises an inboard region spaced proximal to the hub and defining a thickness profile relative to a high speed flow of air provided by the fan assembly, and an outboard region spaced proximal to the inner surface of the airflow duct and defining a thickness profile relative to the high speed flow of air, wherein the thickness profile for the outboard region is less than the thickness profile for the inboard region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile