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. 20, 2010
Filed:
Jan. 15, 2007
Bryan S. Cotton, Millport, NY (US);
Kenneth C. Arifian, Oxford, CT (US);
Leslie Schweizer, Cayuta, NY (US);
Jeffrey L. Cevette, Elkland, PA (US);
Bryan S. Cotton, Millport, NY (US);
Kenneth C. Arifian, Oxford, CT (US);
Leslie Schweizer, Cayuta, NY (US);
Jeffrey L. Cevette, Elkland, PA (US);
Sikorsky Aircraft Corporation, Stratford, CT (US);
Abstract
A translational thrust system for a high speed rotary-wing aircraft includes a propeller system driven by a propeller gearbox, a hydraulic system, and a mechanical-hydraulic control system. The mechanical-hydraulic control system utilizes a hydraulic fluid which travels to and from a propeller dome via an oil transfer/position feedback tube which translates with a propeller pitch change piston. Translation of the oil transfer/position feedback tube and the propeller pitch change piston pitches the blades between high (coarse) and low (fine) pitch positions.