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| Number | Title | Issue Date |
| 7368828 | Wind energy system A wind energy system comprising a queue of turbines housed in a horizontal air conduit. The inlet end of the conduit opens into a wind collector assembly, which preferably comprises in part downwardly extending earthen slope, such as a hillside or embankment. The wi... | 05/06/2008 |
| 7323791 | Louvered horizontal wind turbine A wind turbine, including: a rotatable frame; a plurality of airfoils extending in a direction parallel to an axis of rotation of the rotatable frame; and an enclosure surrounding the rotatable frame, wherein the enclosure comprises a plurality of moveable members c... | 01/29/2008 |
| 7132760 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 11/07/2006 |
| 6755609 | Radial pump A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and/or speed-sensitive element for ... | 06/29/2004 |
| 6533536 | Hydro-turbine runner A turbine installation comprising a turbine in combination with an electrical closed-loop control system. The turbine is disposed in a flow of water for producing electrical energy. The turbine includes a hollow hub and a plurality of runner blades pivota... | 03/18/2003 |
| 6402477 | Adjustable blade turbines A turbine, adaptable to improve the survivability of fish present in water flowing therethrough, includes a hub and associated runner blades. Each blade comprises an inner edge and a distal outer edge, a leading edge and a trailing edge separated by a wat... | 06/11/2002 |
| 6155038 | Method and apparatus for use in control and compensation of clearances in a gas turbine A method and an apparatus for use with a gas turbine engine receive a signal indicative of an engine operating condition, generate signals representative of thermal conditions of a rotor, blades, and a case, and in response to each of the signals above, d... | 12/05/2000 |
| 5954474 | Hydro-turbine runner A turbine, disposed in water flowing therethrough, includes a hub and associated runner blades. Each blade comprises an inner surface and a distal outer surface, a leading edge and a trailing edge separated by a water directing surface. Each blade is rota... | 09/21/1999 |
| 5947679 | Adjustable blade turbines A turbine, adaptable to improve the survivability of fish present in water flowing therethrough, includes a hub and associated runner blades. Each blade comprises an inner edge and a distal outer edge, a leading edge and a trailing edge separated by a wat... | 09/07/1999 |
| 5754446 | Method and apparatus for optimizing performance of a kaplan turbine A method and system for optimizing performance of a Kaplan turbine power generating unit are provided wherein an optimal "N-dimensional" virtual cam is populated with gate and blade positional settings producing maximum power output for a set of N operati... | 05/19/1998 |
| 5561830 | Method of producing a sintered carbonitride alloy for fine milling According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 325 weight-% binder phase with extremely good properties at extremely fine machining with high cutting speeds and low feeds. The metho... | 10/01/1996 |
| 5209632 | Hydroelectric power generation equipment A hydroelectric power generator equipment includes a hydraulic turbine which has a runner with blades adjustable of opening thereof and a hollow turbine shaft mounting thereon the runner, a power generator having a hollow shaft connected to the turbine sh... | 05/11/1993 |
| 5165844 | On-line stall margin adjustment in a gas turbine engine The deflection angle of a gas turbine stator is adjusted in proportion to the difference between two parameters computed from N2 and TT2 using the same function generator. One parameter is a reference adjustment under standard conditions for me... | 11/24/1992 |
| 5165845 | Controlling stall margin in a gas turbine engine during acceleration Stall margin in a gas turbine compressor is controlled during acceleration by synthesizing the thermal enlargement of critical compressor stages to synthesize the temporary increase in blade-case clearance during acceleration. The change in clearance is u... | 11/24/1992 |
| 4743160 | Process and device for limiting the overspeed of a low head hydroelectric generating set A process and apparatus for preventing the overspeed of a low head hydroelectric generating set including a turbine having an adjustable distributor valve assembly and adjustable vanes wherein the openings of the valve assembly and vanes are continuously ... | 05/10/1988 |
| 4700541 | Shape memory alloy actuator An electrically controlled shape memory alloy actuator capable of being miniaturized for use in robotics and other fields. The actuator is made of a shape memory alloy wire which is torsioned end along its longitudinal axis and with its ends constrained a... | 10/20/1987 |
| 4523434 | Air ventilator An air ventilator for ventilating indoor air to the environment comprising a motor provided with a shaft, a rotor mounted on said shaft, a plurality of fan blades pivotally attached to the rotor, a rotating circular plate having a plurality of sliding slo... | 06/18/1985 |
| 4485888 | Vehicle engine cooling apparatus Transversely mounted engine cooling fan in parallel with vehicle engine mechanically driven by straight drive and having blades whose pitch is varied in accordance with engine speed and load for optimized cooling performance. The fan has small radial dime... | 12/04/1984 |
| 4405283 | Gas turbine construction and method of controlling the labyrinth seal clearance automatically and continuously A flow machine particularly a superheated gas turbine comprises a housing with a rotor disposed in the housing for rotation therein and sealed at each end with the housing by a labyrinth seal. The construction includes rotor shaft bearings which rotatably... | 09/20/1983 |
| 4279568 | Vane angle control A linkage system for the variable stator vanes of a gas turbine engine is augmented by control means operable as a function of compressor speed designed to match the aerodynamic requirements of the airflow through the compressor so as to define the rate o... | 07/21/1981 |
