Featured patents

Double-Ducted Fan
US 08821123 B2, Sept. 2, 2014, Axially extending shroud ring or casing, Cengiz Camci et al. / The Penn State Research Foundation (University Park, US)
A ducted air rotor comprising:…

Wind Turbine Blade With Variable Trailing Edge
US 08794919 B2, Aug. 5, 2014, Method of Operation, Peter Grabau et al. / LM Glasfiber A/S (Kolding, DK)
A wind turbine blade for a rotor of a wind turbine having a substantially…

Interlocking Blade Sheath
US 08790087 B2, July 29, 2014, Having wear liner, sheathing or insert, Robert H. Perkinson / Hamilton Sundstrand Corporation (Windsor Locks, US)
A blade assembly comprising:…

Turbomachine Fan Rotor
US 08740568 B2, June 3, 2014, Blade received in well or slot, Philippe Verseux et al. / SNECMA (Paris, FR)
A turbomachine fan rotor having an axis of rotation and comprising:…

Rotor Blade
US 08657576 B2, Feb. 25, 2014, Changing state mass within or fluid flow through working member or carrier, Ian Tibbott et al. / Rolls-Royce PLC (London, GB)
An aerofoil for a gas turbine engine and for use with coolant, the aerofoil…

On-Blade Actuator for Helicopter Rotor Blade Control Flaps
US 08672627 B2, March 18, 2014, Cyclic movement of member or part, Fanping Sun et al. / Sikorsky Aircraft Corporation (Stratford, US)
A helicopter rotor blade comprising:…

System and Method for Reducing Grain Boundaries in Shrouded Airfoils
US 08641381 B2, Feb. 4, 2014, Vibration inhibiting or expansion-contraction structure, Arthur Samuel Peck et al. / General Electric Company (Schenectady, US)
A turbine bucket comprising:…

Turbine Blade Damping Device With Controlled Loading
US 08540488 B2, Sept. 24, 2013, Vibration inhibiting or expansion-contraction structure, John J. Marra / Siemens Energy, Inc. (Orlando, US)
A damping structure in a turbomachine rotor having a rotor disk and a plurality…

Hydraulically Controlled Variable Pitch Propeller
US 08469668 B2, June 25, 2013, Fluid motor, Gerd Muhlbauer / MT-Propeller Entwicklung GmbH (Atting, DE)
A hydraulically controlled variable pitch propeller for an air, land or water…

Wind Turbine With Internal Ram Air Turbine
US 08444383 B1, May 21, 2013, Drive by Fluid Reaction Jet on Working Member, Glenn James Baker
A wind turbine blade system comprises:…

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