Precision blade pitch adjustment

US11518506B2 · kind B2 · utility

Assignee

• Textron Innovations Inc. · US

Inventors

• Andrew Paul Haldeman · Fort Worth, US
• Michael Scott Seifert · Southlake, US
• Timothy McClellan Mosig · Richland Hills, US
• Aaron Alexander Acee · Flower Mound, US
• Diana Tinlin · Fort Worth, US
• Andrew Thomas Carter · Richland Hills, US
• Glenn Thornton Lancaster · Fort Worth, US

Key dates

• Filing date: Mar 10, 2021
• Grant date: Dec 6, 2022
• Expiry date: Mar 10, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2260/83
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A blade pitch adjustment mechanism includes a pitch cylinder having a first face and pitch slots extending longitudinally from the first face, a blade sleeve having a second face and a blade slot extending longitudinally from the second face, the blade sleeve is configured to be rotationally positioned in the pitch cylinder with the second face located with the first face, wherein the blade slot and the pitch slots are cooperative to form keyway, corresponding to a discrete blade pitch, when the blade slot is aligned with a pitch slot.