http://www.freshpatents.com/Fluid-reaction-surfaces--i-e--impellers--dtnewntc416.php USPTO Class 416 - Fluid reaction surfaces (i.e., impellers) en-us Tue, 18 Aug 2009 22:29:01 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Vertical-axis-wind-turbine-dt20090813ptan20090202346.php Tue, 18 Aug 2009 22:29:01 -0700 A vertical axis sail-type wind turbine includes an array of sail-like structures that are mounted on rotating main masts. The sail-like structures can be oriented to interact with the wind. For example, when the sail-like structures are moving in a downwind direction, they are oriented to present a flat surface... http://www.freshpatents.com/Systems-and-methods-for-mitigating-the-effects-of-wind-turbines-on-radar-dt20090813ptan20090202347.php Tue, 18 Aug 2009 22:29:01 -0700 A control system for mitigating the effects of a wind turbine on a radar system is disclosed. The control system includes a sensor configured to detect an operating condition of the radar system; a processor configured to receive an operating condition of the wind turbine and determine a rotation modification... http://www.freshpatents.com/Disposable-ceiling-fan-blade-slipcovers-dt20090813ptan20090202348.php Tue, 18 Aug 2009 22:29:01 -0700 The Ceiling Fan Blade Slipcovers is a potential new commercial product generally involving ceiling fans. This product is put on each blade to protect the blades from dirty greasy build up. No more scrapping or overhead cleaning of ceiling fan blades. The slipcovers are also disposable too. It's like changing... http://www.freshpatents.com/Blade-with-a-cooling-groove-for-a-bladed-wheel-of-a-turbomachine-dt20090813ptan20090202358.php Tue, 18 Aug 2009 22:29:01 -0700 A blade for a turbomachine bladed wheel, the blade including an airfoil and a platform with at least one air injection passage, the platform including a groove running along the pressure side of the airfoil at least in the vicinity of a downstream portion thereof, and formed between the pressure... http://www.freshpatents.com/Cooled-pusher-propeller-system-dt20090813ptan20090202357.php Tue, 18 Aug 2009 22:29:01 -0700 A propulsion system and method includes an annular exhaust nozzle about an axis radially outboard of the annular cooling flow nozzle and ejecting an exhaust flow through an annular exhaust nozzle about an axis radially outboard of the annular cooling flow nozzle.... http://www.freshpatents.com/Self-assembly-micro-fan-dt20090813ptan20090202349.php Tue, 18 Aug 2009 22:29:01 -0700 A self-assembly micro fan includes a body, a plurality of blades and flexible joints, with any one of the blades being connected to the body by one of the flexible joints while each flexible joint is regarded as a pivot to move the blade connected therewith to have an angle... http://www.freshpatents.com/Handling-system-for-a-wind-turbine-nacelle-methods-for-transport-and-vertical-displacement-of-a-wind-turbine-nacelle-and-a-use-of-a-handling-system-dt20090813ptan20090202350.php Tue, 18 Aug 2009 22:29:01 -0700 A handling system for a wind turbine nacelle in connection with self-loading or self-unloading of the nacelle to or from a vehicle. Two or more lifting apparatus are provided for displacing the nacelle substantially vertically during the self-loading or self-unloading of the nacelle. The lifting apparatus has displacing apparatus for... http://www.freshpatents.com/Wind-turbine-blade-with-a-light-beacon-at-the-tip-dt20090813ptan20090202351.php Tue, 18 Aug 2009 22:29:01 -0700 Wind turbine blade (11) with a flashing beacon on its tip which is connected to the wind turbine rotor hub (13) where this beacon includes a lighting module (21) in the tip area of the blade (11) which is supplied by a device that includes a light emitter (23) situated... http://www.freshpatents.com/Forward-swept-centrifugal-fan-wheel-dt20090813ptan20090202352.php Tue, 18 Aug 2009 22:29:01 -0700 A forward swept centrifugal fan wheel comprising a first endring (10), a second endring (11), a plurality of blades (12) connected between the first endring and the second endring, each blade having a substantially continuous arcuate form extending along an axis parallel to an axis of rotation (A-A), and each... http://www.freshpatents.com/Wheel-for-a-rotating-flow-machine-dt20090813ptan20090202353.php Tue, 18 Aug 2009 22:29:01 -0700 A wheel for a rotating flow machine, comprising a rotor (1) on which a plurality of blades (2) are arranged projecting radially from the rotor (1), with each blade (2) having a root (3) attached to the rotor (1) and a blade top (4). In addition, the wheel comprises a... http://www.freshpatents.com/Wind-turbine-blade-dt20090813ptan20090202354.php Tue, 18 Aug 2009 22:29:01 -0700 An aerodynamic profile and a wind turbine comprising a wind turbine blade with reduced sensitivity towards surface irregularities are provided. The invention is mainly directed towards pitch-regulated wind turbines, which are operated at variable rotor speed and have blades longer than about 30 meters.... http://www.freshpatents.com/Replaceable-blade-tip-shroud-dt20090813ptan20090202355.php Tue, 18 Aug 2009 22:29:01 -0700 One embodiment of the present invention is a blade with a replaceable blade tip shroud that includes an airfoil shaped spar extending from a leading edge to a trailing edge between a root end and a tip end. It can also include a plurality of tiles coupled to an exterior... http://www.freshpatents.com/Vertical-axis-rotor-type-wind-turbine-dt20090813ptan20090202356.php Tue, 18 Aug 2009 22:29:01 -0700 The invention refers to the field of wind power engineering, particularly to the vertical axis rotor-type wind turbines, which can be used for drive of electric generators or other using equipment of mechanical energy. The rotor-type wind turbine contains a central vertical shaft, mounted in a hollow elongated supporting column,...