| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 416087000 | RADIALLY EXTENSIBLE OR RETRACTIBLE ROTOR WORKING MEMBER | 17 |
| 20090304507 | RETRACTABLE ROTOR BLADE STRUCTURE - A power generating system includes a turbine which is mounted on top of a tower or tethered under water. The turbine includes a rotor having a main blade connected to a rotor hub and an extender blade module. An adjusting device positions the extender blade between a retracted position within the main blade and an extended position to expose more or less of the rotor to the fluid flow. An extendible rotor blade structure provides support for an air foil shell by extending a structural beam of a base blade portion of the rotor blade through a telescoping module of the blade. This occurs both when an extender blade portion of the rotor blade is retracted and when it is extended. | 12-10-2009 |
| 20100266408 | Methods and System for Providing Power and Signals in a Turbine - Power and signals may be transmitted from a root portion of an extendable rotor blade to a moving tip portion using a slide block and a slide channel. The slide block is configured to fit within the slide channel and includes a conductive element that comes into contact with a conductive element of the slide channel. The tip portion may be attached to the slide block such that as the slide block moves along the slide channel, the tip portion is extended or retracted accordingly. The conductive elements may be fixed within each of the slide block and slide channel so that when the tip portion is retracted or extended, the conductive elements do not move. | 10-21-2010 |
| 20080286103 | FAN WITH POWER DEPLOYED FAN BLADE - A fan comprising: a housing unit; a retractable fan blade; and a means for driving the retractable fan blade from a retracted position within the housing unit to an extended position exterior to the housing unit. | 11-20-2008 |
| 20100150717 | Variable-Diameter Rotor with Centrifugal Forces Compensation Mechanism - A variable-diameter rotor comprises a hub with a shaft and rotor blades, wherein each of the rotor blades comprises a radially internal blade part and a radially external blade part. In each of the rotor blades, a jackscrew mechanism is arranged therein and includes a jackscrew arranged in the radially internal blade part and a nut connected with the radially external blade part, the nut cooperating with the jackscrew for radially moving the radially external blade part with respect to the radially internal blade part. The rotor further comprises an energy storage system, including a compressed-gas accumulator. The compressed-gas accumulator comprises a volume of gas and a piston for compressing and expanding the volume of pressurized gas. The energy storage system also includes a means for converting a radial motion of the radially external blade part into a motion of the piston of the compressed-gas accumulator and vice-versa. | 06-17-2010 |
| 20100260603 | Variable Length Wind Turbine Blade Having Transition Area Elements - A wind turbine blade having a longitudinal axis is provided. The wind turbine blade includes a root portion and a tip portion. The root portion has a supported end and an unsupported end. The tip portion is configured to be slidably received within the unsupported end of the root portion. A transverse gap is defined between the root portion and the tip portion. A transition element is affixed to the unsupported end of the root portion such that the transition element at least partially bridges the transverse gap. The wind turbine blade may further include blade cleaning elements and/or sensing elements, particularly in the vicinity of the transition element. | 10-14-2010 |
| 20120195757 | VERTICAL WIND POWER GENERATOR - The present invention relates to a vertical axis turbine rotor blade arrangement for a wind power generator adapted to rotate around a vertical axis. The vertical axis turbine rotor blade arrangement comprises a rotor blade having a first and a second end and being pivotally connected to a pivot arm. The pivot arm has a first and a second end and is pivotally connected to a base member. The rotor blade is adapted to be displaced between an active position and a retracted position. The base member and the pivot arm defines a horizontal plane when the rotor blade is in the active position, the base member is rotateable around a pole, the pole is configured to extend in a first direction. | 08-02-2012 |
| 20100226773 | IMPELLER FOR A CENTRIFUGAL PUMP - The impeller for a centrifugal pump includes a carrier disk and possibly a shroud. The blades of the impeller are identical, but are arranged in pairs such that impellers of different hydraulic characteristics are formed with blades of the same shape. | 09-09-2010 |
| 20080226449 | Combined Light Fitting and Ceiling Fan - A combined ceiling fan and light fitting (fan/light) ( | 09-18-2008 |
| 20100310374 | RETRACTABLE BLADE STRUCTURE WITH A SPLIT TRAILING EDGE - An extendable blade structure includes an extender blade module and a base blade module. The extender blade module includes a carrier airfoil shell housing, an extender blade and an adjusting device for positioning the extender blade between a retracted position within the carrier airfoil shell and an extended position. The extender blade is provided with trailing edge flaps and a support structure between the trailing edge flaps. The flaps are urged together to form a trailing edge in the extended position. The carrier airfoil shell is provided with a carrier airfoil shell support structure and slots formed at upper and lower sides of the carrier airfoil shell support structure. Each slot is adapted to accommodate one of the flaps, the flaps being forced apart and guided into the slots by the carrier airfoil shell support structure in the retracted position of the extender blade. The carrier airfoil shell support structure and the support structure of the extender blade rest against each other between the flaps. | 12-09-2010 |
| 20100196159 | Mass-Centralizing Blade Extension Drive Mount Locations for a Wind Turbine - Drive units for variable-length rotor blades are located so as to move mass closer to the center of a wind turbine rotor. In some cases, drive units are located within a root portion of a base blade of a blade assembly. In other cases, drive units are located outside of the blade assemblies. In some such cases, drive units are contained within separate couplers used to connect blade assemblies to a wind turbine rotor hub. In other cases, one or more drive units are located within a rotor hub. | 08-05-2010 |
| 416088000 | Variable work surface or non-rigid connection | 4 |
| 20110206513 | Drive Mechanisms For Variable Diameter Rotor Systems - A rotor hub assembly includes a rotor hub for supporting a telescoping rotor blade having an outboard section; and a drive mechanism associated with the telescoping rotor blade, the drive mechanism including: a motor; a spool driven by the motor; and a strap wound on the spool, the strap coupled to the outboard section of the telescoping rotor blade. | 08-25-2011 |
| 20120243994 | ROTOR SYSTEM - Embodiments of the invention relate to a rotor system, particularly for use in a wind turbine generator system. A support ( | 09-27-2012 |
| 20120039711 | FLUID PUMP - The invention relates to a fluid pump, in particular liquid pump, with a rotor, with a rotor shaft ( | 02-16-2012 |
| 20100202882 | BLADE ASSEMBLY FOR A CEILING FAN - A blade assembly for a ceiling fan includes a mounting arm, a bearing, a cover, a spiral spring, a blade, and three screws. The mounting arm has a plate. The plate has a boss. The boss has a split. The bearing is sleeved on the boss. The cover has a stub. The stub has a receiving recess for receiving the bearing. The cover has a through hole for passing the boss. The cover has three bosses. The spiral spring has one end sleeved on the boss of the cover and the other end engaged with the split. The blade has three mounting holes and corresponding to the boss of the cover. The three screws pass through the mounting holes and fasten with the bosses of the cover. | 08-12-2010 |
| 416089000 | Having pitch adjustment | 3 |
| 20100104437 | RETRACTABLE COMPOSITE IMPELLER ASSEMBLY - An extendable/retractable rotor for vertical lift has plural rotor blades, each with a rotor hub assembly, blade top and bottom hinged casings and a pitch disc rotateable about its longitudinal axis to change the rotor blade pitch angle. An interlink assembly has a blade base, a link base subassembly of top and bottom link hubs, two locking arms, a retracting reel assembly having exterior and interior rotor axles, a breaking actuator having plural outer breaking notches, plural recoiling spools forming a reel cage and a locking mechanism preventing blade retraction. A helical ribbon assembly with plural sequentially overlapped ribbons has pin restraints, plural layers each helically wound around the interlink assembly and a flexible and elastic sleeve of plural elastic ribs. An elastic and flexible skin made of composite elastomeric sheet reinforced by fibers is provided as is a zipper slider mechanism of a main slider, a zipper wedge, a wedge track, plural spring loaded wheels, plural hinged plates and plural hinge joints. | 04-29-2010 |
| 20090274557 | Propeller with Flexible Variable Blades - The proposed propeller consists of the rotor disc assembly | 11-05-2009 |
| 20120027593 | Blade Arm - The apparatus of the present invention comprises a user adjustable variable axial length and variable pitch ceiling fan blade arm. The blade arm includes a pair of extension elements. Each element is threadably engaged with each other. At the other end of the extension elements are custom flanges for the purpose of attaching a fan blade and connecting the blade arm to a ceiling fan motor. | 02-02-2012 |
