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Patent Searching and Data


Title:
ASSEMBLY FOR PROVIDING FLEXURE TO BLADE SYSTEM
Document Type and Number:
WIPO Patent Application WO2006081181
Kind Code:
A3
Abstract:
An assembly for providing flexure to a blade of a rotary blade system includes 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 has a layer of cushioning material positioned thereon and secured thereto. An alternate embodiment includes 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. Another alternate embodiment includes a similar assembly having a twist-shank type of yoke for providing rotation of attached blades about their respective pitch axes.

Inventors:
STAMPS FRANK B (US)
TISDALE PATRICK R (US)
SHERRILL PAUL (US)
RAUBER RICHARD (US)
CAMPBELL THOMAS C (US)
BRASWELL JAMES LEE JR (US)
MEASOM RON (US)
HIROS TRICIA (US)
POPELKA DAVID (US)
SOUTHERLAND MICHAEL J (US)
STANNEY KEITH (US)
WASIKOWSKI MARK (US)
LEDBETTER TIM (US)
Application Number:
PCT/US2006/002284
Publication Date:
October 12, 2006
Filing Date:
January 24, 2006
Export Citation:
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Assignee:
BELL HELICOPTER TEXTRON INC (US)
STAMPS FRANK B (US)
TISDALE PATRICK R (US)
SHERRILL PAUL (US)
RAUBER RICHARD (US)
CAMPBELL THOMAS C (US)
BRASWELL JAMES LEE JR (US)
MEASOM RON (US)
HIROS TRICIA (US)
POPELKA DAVID (US)
SOUTHERLAND MICHAEL J (US)
STANNEY KEITH (US)
WASIKOWSKI MARK (US)
LEDBETTER TIM (US)
International Classes:
B63H5/125; B63H1/06
Foreign References:
US4650401A1987-03-17
US4047839A1977-09-13
US4381902A1983-05-03
Other References:
See also references of EP 1841644A4
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