Assembly for providing flexure to blade system

US7665969B2 · kind B2 · utility

Assignee

• Bell Helicopter Textron Inc. · US

Inventors

• Frank B. Stamps · Colleyville, US
• Patrick R. Tisdale · Keller, US
• James L. Braswell, Jr. · Colleyville, US
• Charles L. Baskin · Arlington, US
• Tom Campbell · Lakewood, US
• Timothy Kent Ledbetter · Euless, US
• Joseph John Zierer · Niskayuna, US
• D. J. Reddy · Hurst, US
• Mark Adam Wiinikka · Hurst, US
• Ronnie L. Martin · Arlington, US
• David A. Haynie · Euless, US
• Stanley G. Sadler · Arlington, US
• Ron Measom · Hurst, US
• Paul K. Oldroyd · Azle, US
• Tricia Hiros · Hurst, US
• Jim Harse · Bedford, US
• Bob Mullins · Mansfield, US

Key dates

• Filing date: Jan 24, 2005
• Grant date: Feb 23, 2010
• Expiry date: Jan 13, 2026

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C27/33
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An assembly for providing flexure to a blade of a rotary blade system, the assembly including an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces having a layer of cushioning material positioned thereon and secured thereto. The layer of cushioning material extending along and following the general contour of yoke surface, and the layer of cushioning material directly contacting a support plate. Another embodiment is an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle.