Fluid reaction surfaces (i.e., impellers) inventions 10/09

20090246020 - Method for damping edgewise oscillations in one or more blades of a wind turbine, an active stall controlled wind turbine and use hereof: A method for damping edgewise oscillations in one or more blades of a wind turbine includes the steps of detecting if one or more of the blades oscillates edgewise during operation of the wind turbine, and substantially cyclically generating a pitch angle difference between at least two of the blades.... Agent: St. Onge Steward Johnston & Reens, Llc

20090246019 - Wind turbine monitoring: A method of detecting the formation of ice on the blades of a wind turbine 1. The wind turbine has at least one turbine blade 2 mounted to a rotor and provided with at least a first strain sensor 4 for measuring mechanical strain of the turbine blade. The method... Agent: Renner Otto Boisselle & Sklar, LLP

20090246021 - Pulsed torque control of wind turbine pitch systems: A wind turbine pitch control system is disclosed that provides a pulsed torque to the blade pitch actuator if continuous torque fails to adjust the blade pitch angle to a commanded pitch angle. This invention provides a cost-effective way to increase peak torque capability for existing wind turbines that have... Agent: Mcnees Wallace & Nurick, Llc

20090246022 - Fire fighting pump and its operating methods: A fire fighting pump and operation thereof and a fire fighting system and a fire engine, wherein the pump includes a housing, a motor mounted inside the housing and two or more stages of series-connected impeller assemblies. A water inlet is provided on the housing between the motor and the... Agent: Leong C Lei

20090246023 - Chambered airfoil cooling: An airfoil assembly includes an airfoil with at least one cavity that is in communication with a source of cooling air. A baffle is disposed within that cavity and includes a plurality of openings for directing cooling air against the hot wall. A plurality of dividers extends between the baffle... Agent: Carlson, Gaskey & Olds/pratt & Whitney

20090246024 - Fan and impeller thereof: A fan includes an impeller and a fan frame. The impeller is accommodated within the fan frame. The impeller has a hub and a plurality of blades disposed around the hub. The hub has a top portion and a side wall connected with the top portion. The hub further has... Agent: Muncy, Geissler, Olds & Lowe, Pllc

20090246025 - Wind turbine protection: A lightning protection system for a wind turbine blade of a wind turbine includes a conductive lightning receptor for mounting at the surface of a turbine blade such that a portion of the lightning receptor projects beyond a trailing edge of the turbine blade when mounted at the surface. Another... Agent: General Electric Company Global Research

20090246026 - Reinforced impeller and method: An impeller is provided having a first plate, a second plate, a plurality of blades being positioned between and connected to the first and second plates, and at least one brace member having first and second planes positioned between and connected to two blades such that the brace extends generally... Agent: Wildman Harrold Allen & Dixon LLP

20090246027 - Wind/fluid turbine: A wind turbine is provided which comprises a plurality of blades and a single venturi disposed at a central area of the plurality of blades. The single venturi redirects the wind from a concave side of an active blade to the concave sides of the other blades. Also, the single... Agent: Stetina Brunda Garred & Brucker

20090246028 - Fan blade iron isolation: A ceiling fan is disclosed having an electric motor (13) with a bottom mounting plate (14) to which an annular array of blade irons (16) are coupled, each having a blade (17) mounted thereto. Each blade iron has a motor mounting flange (21) with a recess (23), an end tongue... Agent: Baker, Donelson, Bearman, Caldwell & Berkowitz Intellectual Property Department

20090246029 - Turbine rotor blade, turbine rotor and steam turbine equipped with the same: A turbine rotor blade according to the present invention includes a cover provided at the top of an effective blade portion and a blade-fitting portion provided at the bottom of the effective blade portion. A turbine wheel is provided with a turbine-wheel engagement portion to which the blade-fitting portion is... Agent: Foley And Lardner LLP Suite 500

20090246030 - Impeller: To provide a can manufacturing pump impeller in which a stress of a base portion of a blade is prevented from increasing while improving the strength of a joint portion of a hub and a boss. In order to reinforce a joint portion of a hub and a boss, a... Agent: Mattingly & Malur, P.c.

20090246032 - Method of machining airfoil root fillets: An airfoil root fillet having a predetermined compound curve profile can be flank milled with a single flank milling cutter having a generally conical flank milling portion and a rounded tip portion defining a compound curve.... Agent: Ogilvy Renault LLP (pwc)

20090246031 - Method of restoring an airfoil blade: A method of repairing an airfoil blade involves the steps of providing an airfoil blade have a leading edge, a trailing edge, a tip and a base. A length of the airfoil blade is defined by the tip and the base and a width of the airfoil blade is defined... Agent: Carlson, Gaskey & Olds/pratt & Whitney

20090246033 - wind turbine blade: There is provided a wind turbine blade at least 50% of the surface of which is covered with a self-adhesive thermoplastic film. By applying a self-adhesive thermoplastic film to the blade, the need for a gelcoat or the paint is eliminated. It is estimated that the thermoplastic film will take... Agent: Patterson & Sheridan, L.l.p.