http://www.freshpatents.com/Prime-mover-dynamo-plants-dtnewntc290.php USPTO Class 290 - Prime-mover dynamo plants en-us Fri, 19 Dec 2008 00:06:33 -0800 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/Controller-computing-a-virtual-tuning-capacitor-for-controlling-a-free-piston-stirling-engine-driving-a-linear-alternator-dt20081211ptan20080303289.php Fri, 19 Dec 2008 00:06:33 -0800 A feedback control circuit and method for a control system used to control an electrical power generating source that comprises a free piston Stirling engine driving a linear alternator. A switching mode rectifier connects the alternator winding to an output circuit that includes an electrical energy storage means and is... http://www.freshpatents.com/Generating-unit-and-method-for-producing-a-current-with-a-predetermined-network-frequency-dt20081211ptan20080303279.php Fri, 19 Dec 2008 00:06:33 -0800 According to the invention, a drive is embodied to drive a rotor at a variable rotational frequency; the rotor has a winding that is embodied to produce a rotary field magnetomotive force of a generator, with a rotor rotary field frequency which is variable in relation to the rotor; the... http://www.freshpatents.com/Engine-start-system-with-quadrature-ac-excitation-dt20081211ptan20080303280.php Fri, 19 Dec 2008 00:06:33 -0800 A starter-generator system may be used to supply sufficient starting torque to start an aircraft main engine. The main starter-generator stator winding may be connected to a constant frequency (CF) power source to create a rotating field in the main starter-generator air gap. This rotating field, in turn, may induce... http://www.freshpatents.com/Rotational-speed-determination-dt20081211ptan20080303281.php Fri, 19 Dec 2008 00:06:33 -0800 The invention relates to a method for the operation of a wind power plant (11) with a rotor (10) and a rotating apparatus (20, 22, 24) connected with the rotor (10), wherein a rotor speed (nR) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, wherein... http://www.freshpatents.com/Water-cycling-system-with-compressor-motive-force-and-with-turbine-electric-power-generator-dt20081211ptan20080303282.php Fri, 19 Dec 2008 00:06:33 -0800 A water cycling system with compressor motive force and with turbine electric power generation, includes: (a) a water piping subsystem that has a circuitous loop means for continuously or intermittently circulating water in a loop, the loop having an upward flowing side and a downward flowing side, the loop having... http://www.freshpatents.com/Apparatus-for-converting-water-current-into-electricity-dt20081211ptan20080303284.php Fri, 19 Dec 2008 00:06:33 -0800 A low-profile apparatus for converting water current into electricity. Fabric scoops are spaced along a continuous belt and, when submerged in a current of moving water, are pushed by the current thereby causing the continuous belt to move. The current pushes the fabric scoops downstream and then fold closed as... http://www.freshpatents.com/Energy-transfer-apparatus-and-methods-dt20081211ptan20080303283.php Fri, 19 Dec 2008 00:06:33 -0800 The invention provides an energy transfer apparatus having an energy transfer chamber (optionally bounded by an energy transfer tube) in which rotating flow is established. Preferably, the apparatus has a cold-fluid-discharge end and a hot-fluid-discharge end. Also provided are methods of using such apparatuses.... http://www.freshpatents.com/Method-and-apparatus-for-hydroelectric-power-generation-dt20081211ptan20080303285.php Fri, 19 Dec 2008 00:06:33 -0800 A hydroelectric generation device utilizing a series of parachutes below the surface of a flowing body of water for imparting rotational energy to a generator assembly. The hydroelectric generation device can include a positioning assembly for positioning and retaining the hydroelectric generation device below a water surface. The generator assembly... http://www.freshpatents.com/Device-and-system-for-producing-regenerative-and-renewable-energy-from-wind-dt20081211ptan20080303288.php Fri, 19 Dec 2008 00:06:33 -0800 The invention relates to a device for producing regenerative and renewable from wind, comprising at least one generator for producing electric energy, and a drive shaft which is connected to the generator and which comprises a plurality of blades which are set rotating by the passing air. The blades are... http://www.freshpatents.com/Wind-driven-venturi-turbine-dt20081211ptan20080303287.php Fri, 19 Dec 2008 00:06:33 -0800 A venturi tube wind turbine comprising a venturi tube having inlet and outlet openings, opposed side members and a constricted throat section, where two of the opposing side members comprise rotatable endless belts each having mounted thereon a plurality of wind catching vanes.... http://www.freshpatents.com/Wind-electrical-generation-system-dt20081211ptan20080303286.php Fri, 19 Dec 2008 00:06:33 -0800 A wind electrical generation system includes a relatively large number of small, miniature wind-driven electrical generators or turbines arranged together in various predetermined configurations. Each generator includes a spinning wheel with a plurality of vanes driven by the wind flowing through a plurality of air channels. Each vane may be...