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| Number | Title | Issue Date |
| 8186950 | Aerodynamic device for detection of wind turbine blade operation An aerodynamic device is provided for detection of physical conditions of wind turbine blade operation. One or more vibration sensors are mounted on the blades in an aerodynamic housing and configured to monitor a physical condition of the blades that varies in acco... | 05/29/2012 |
| 8038398 | System and method of distributing air within a wind turbine An air distribution system for use with a wind turbine. The wind turbine includes a nacelle that is coupled to a tower and a rotor that is rotatably coupled to the nacelle with a rotor shaft. The rotor includes at least one rotor blade that is coupled to a hub. The ... | 10/18/2011 |
| 8038397 | System and method of deicing and prevention or delay of flow separation over wind turbine blades A system for deicing a wind turbine blade includes an electrically powered active plasma actuator applied to a desired portion of a wind turbine blade. The activated plasma actuator energizes the air in the vicinity of the plasma actuator to increase the surface tem... | 10/18/2011 |
| 7708524 | Method and system for utilizing lateral tower acceleration to detect asymmetric icing A method and system for detecting asymmetric utilizing lateral tower acceleration data may include: providing a lateral tower acceleration monitoring system; determining from the lateral tower acceleration monitoring system whether a lateral tower acceleration is ab... | 05/04/2010 |
| 7331760 | Fan revolution speed control method Actual temperatures of intake air, hydraulic oil, and coolant, to be cooled by a cooling fan, are detected. Target fan revolution speeds are determined by PI control units based on differences between the actual temperatures and target temperatures. The cooling fan ... | 02/19/2008 |
| 7310959 | Method for actuating a fan using a plurality of characteristic curves and a control program for controlling the power of the fan The present invention relates to control of a fan during which the power of the fan is determined from the characteristic curves of the fan motor, the operating parameters of the cooling system and the reference variables which are predefined in the form of temperat... | 12/25/2007 |
| 7219247 | Methods and apparatus for replacing cooling systems in operating computers An apparatus and method for replacing a CPU cooling system, for example, a fan, while a computer continues to operate has a mechanism for maintenance personnel to signal that cooling fan replacement is about to begin. In response to the signal, a control mechanism c... | 05/15/2007 |
| 7182575 | Method of operating a wind turbine A wind turbine has a generator (7) with a connected rotor (3) having a hub (4) and blades (5) rotatably connected to the hub for adjusting the pitch angle. In a method of operating such a wind turbine under climatic conditions, where ther... | 02/27/2007 |
| 7118336 | Pressurized oil supply for propeller engine system A system and method for providing pressurised oil during non-feathered in-flight shutdown conditions in a variable-pitch aircraft propeller engine. A secondary pump provides pressurised oil substantially independent of an engine main oil circuit. ... | 10/10/2006 |
| 7086834 | Methods and apparatus for rotor blade ice detection A method for detecting ice on a wind turbine having a rotor and one or more rotor blades each having blade roots includes monitoring meteorological conditions relating to icing conditions and monitoring one or more physical characteristics of the wind turbine in ope... | 08/08/2006 |
| 7077622 | Emergency cooling system for a thermally loaded component In an emergency cooling system (17) for a component (1) which is subject to thermal load in operation, in, e.g., a turbine, the component (1) has a wall (3) which, in operation, is acted on by heat on a first wall side (14) and is ... | 07/18/2006 |
| 7063563 | Freely rotational receptacle A freely rotational receptacle includes an upper casing member with a hollow space, a receptacle body, a terminal set, a first contact ring, a second contact ring, a relay seat and a lower casing member. When the freely rotational receptacle is assembled, the recept... | 06/20/2006 |
| 7055316 | Fluid coupling for mobile equipment In an assembly including a diesel engine, a fluid coupling connected to the flywheel of the diesel engine, a comminuting machine and a conveyor for feeding the comminuting machine, a fluid coupling module is common to various output power train assemblies. Slip spee... | 06/06/2006 |
| 7025559 | Methods and systems for operating rotary machines A method for operating a rotary machine is provided. The rotary machine includes a stationary member and a rotatable member wherein the rotatable member is configured to rotate at least partially within the stationary member. The method includes determining an off-n... | 04/11/2006 |
| 7008184 | Control for cooling fan A control for changing direction of air flow through a cooling core in response to an external signal and a purge signal includes a logic circuit and a relay assembly. The logic circuit generates a fan control signal based on the external signal, which causes the fa... | 03/07/2006 |
| 6893221 | Fan control A method for controlling fan operation that includes detecting a stopped fan and attempting to start the stopped fan. The method includes attempting to start the stopped fan again after at least one first time interval when the fan does not start. The method include... | 05/17/2005 |
| 6890152 | Deicing device for wind turbine blades Methods and Apparatuses for deicing a wind turbine blade are described herein. In one embodiment, an exemplary process includes detecting an icy condition on a wind turbine blade and causing at least a portion of the wind turbine blade to vibrate, causing the ice bu... | 05/10/2005 |
| 6729844 | Controller for variable pitch fan system An electronic control device for opening and closing valves in a valve assembly that actuates a variable pitch fan system capable of operating in a plurality of fan blade pitch positions including a temperature switch actuated in response to a temperature condition ... | 05/04/2004 |
| 6537019 | Fan assembly and method A fan assembly includes a first fan and a second fan. The first fan has a first housing and a first blade assembly. The first blade assembly includes a plurality of blades attached to a hub, and is configured to rotate about a first axis of rotation in a ... | 03/25/2003 |
| 6485255 | Cooling air flow control device for a gas turbine engine A cooling air flow control device for a gas turbine engine, the cooling air flow control device comprising a component, a cooling passage defined within the component and a shaped memory metal valve, the shaped memory metal valve disposed in the cooling p... | 11/26/2002 |
| 6416279 | Cooled gas turbine component with adjustable cooling At least one adjustable restricting point is introduced into the cooling air path of a coolable gas turbine component, and means which make it possible to change this restricting point during the operation of the machine are provided. In this way it is po... | 07/09/2002 |
| 6361276 | Method and apparatus for removal of moisture from rotor blades Composite rotor blades are constructed from a honeycombed polymer interior core structure having a bonded glass skin covering associated with the top and bottom surfaces thereof. Over time, environmental conditions lead to cracks or fissures in the glass ... | 03/26/2002 |
| 6358006 | Quick disconnect bracket system for propeller deicer A wiring system for an electrothermal propeller deicer for both left and right hand rotating propellers, where the deicer has leads extending therefrom and terminating in a connector which mates with a connector connecting leads from the power supply. The... | 03/19/2002 |
| 6340289 | Single lever power controller for manned and unmanned aircraft Method and apparatus for controlling an aircraft engine with a single, manually-operable lever includes structure and function for generating a pilot thrust command from the single lever. A processor is coupled to the single lever and (i) receives the gen... | 01/22/2002 |
| 6216979 | De-icing connection systems for rotor aircraft rotor The system connects a power supply conductor to an electrical de-icing device of a blade by at least one cable with a first section connected to the power supply conductor by a connector and to a second section with an aerial brace in a flattened half-loo... | 04/17/2001 |
| 6171055 | Single lever power controller for manned and unmanned aircraft Method and apparatus for controlling an aircraft engine with a single, manually-operable lever includes structure and function for generating a pilot thrust command from the single lever. A processor is coupled to the single lever and (i) receives the gen... | 01/09/2001 |
| 6170275 | Fan for refrigerator A fan suitable for use in a refrigerator includes a motor frame having a bracket insertion hole, a bracket including a cylindrical portion fitted into the bracket insertion hole so as to project from the motor frame and a bearing, a stator including a sta... | 01/09/2001 |
| 6146090 | Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof In a turbine rotor, a thermal mismatch between various component parts of the rotor occurs particularly during transient operations such as shutdown and startup. A thermal medium flows past and heats or cools one part of the turbine which may have a delet... | 11/14/2000 |
| 6109872 | Rotor blade cover system A helicopter rotor cover system to prevent ice formation on the rotors. The system is comprised of a main rotor cover and a tail rotor cover providing an enclosed space around the rotors, a tubular member connecting the enclosed spaces of the two covers a... | 08/29/2000 |
| 6065934 | Shape memory rotary actuator A rotary actuator (18) is provided, including an actuator assembly (20). The actuator assembly includes a torque tube (24) formed of a shape memory alloy, a super elastic NiTinol return spring (26) having a proximal end (46) and a distal end (44), and a t... | 05/23/2000 |
| 6065930 | Cooling control apparatus A cooling control apparatus controls a plurality of cooling members. The apparatus has a monitor which monitors states of predetermined combinations of the cooling members and a controller which controls the cooling members based on the states monitored b... | 05/23/2000 |
| 6015263 | Fluid moving device and associated method A fluid moving device (100) includes a rotatable assembly (101), and a plurality of fan blades (102-04) disposed circumferentially around and extending outward from rotatable assembly (101), at least one of plurality of fan blades (102-04) includes shape ... | 01/18/2000 |
| 5997250 | Method and apparatus for controlling pitch of an aircraft propeller A propeller pitch control apparatus for an aircraft in which the vector sum of the aircraft forward speed and the propeller rotational tip speed is a selected fraction of the speed of sound, the fraction based on percent power and altitude, to maximize ef... | 12/07/1999 |
| 5769606 | De-icing connection installation for rotorcraft rotor The installation links a supply conductor to an electrical device for de-icing a blade using at least one cable with a first stretch linked to the supply conductor by a connector and to a second stretch with an overhead hook in the form of flattened half ... | 06/23/1998 |
| 5716193 | Installation for affording electrical continuity for rotorcraft rotor The installation for removing electrostatic charge and passing lightning current between a conductor of each blade of the rotor and a metallic part of the hub comprises at least one conductive member integral with the member for linking the blade to the h... | 02/10/1998 |
| 5709532 | Propeller ice protection system and method providing reduced sliding contact maintenance The invention relates to a propeller ice protection system having more evenly distributed sliding contact wear resulting in reduced maintenance, and a method of operating the system. According to the invention, polarity of a DC potential applied to the sl... | 01/20/1998 |
| 5564899 | Engine cooling system with blade angle controllable cooling fan An engine cooling system with a blade angle controllable cooling fan. The system has a water temperature sensor, a controller and a pitch actuator. The sensor senses a cooling water temperature and outputs a temperature signal. The controller generates a ... | 10/15/1996 |
| 5545009 | Hot air/cold air dual-mode electric fan A hot air/cold air dual-mode electric fan including a vane assembly having an electric heating coil in the mica sheets of each vane, a bakelite mount fixedly secured to the vane assembly and having a circuit board with backward female contacts, a barrel m... | 08/13/1996 |
| 5350273 | Wind energy collection system A wind-driven apparatus for converting the kinetic energy of wind into mechanical energy. This invention incorporates a wind collector that is rotated upon an elevated turntable in order to position the wind collector as required. This turntable incorpora... | 09/27/1994 |
| 5230606 | Electric fan with hot air/cold air dual-mode control An electric fan includes a vane assembly fastened to a hub connected to a base plate in front of a motor output shaft of the motor by a connector and two bearings, which vane assembly is consisted of a plurality of vanes, of which each is comprised of an ... | 07/27/1993 |
