Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Nonmetallic resilient mounting
Reexamination Certificate
2004-08-27
2010-11-09
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Nonmetallic resilient mounting
C416S107000, C416S140000, C416S141000, C416S148000, C188S282100, C188S283000, C188S266300, C188S299100, C188S319200, C188S322150
Reexamination Certificate
active
07828525
ABSTRACT:
A rotor hub assembly for a rotary-wing aircraft has a central member and a plurality of blade grips adapted for attaching rotor blades to the central member. The blade grips are pivotally attached to the central member and are capable of pivoting about a pivot axis generally normal to a plane of rotation of the blades. The pivoting allows for in-plane motion of the blades relative to the central member. A damper is operably connected to each blade grip for damping the in-plane motion of the associated blade, each damper being selectively switchable between at least two spring rates.
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Baskin Bryan
Bothwell Christopher M.
Braswell, Jr. James L.
Campbell Thomas C.
Corso Lawrence M.
Bell Helicopter Textron Inc.
Verdier Christopher
Walton James E.
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