Class / Patent application number | Description | Number of patent applications / Date published |
416240000 | Flexible | 9 |
20090148304 | Wind turbine rotor assembly - A rotor assembly for a wind turbine including at least one blade adapted to automatically adjust its shape as a function of rotational speed to create an efficient fluid dynamic profile over a wide range of wind conditions and rotational speeds. The rotor assembly includes at least one blade configured to respond to rotation induced forces to automatically bend in a manner to optimize its wind profile. | 06-11-2009 |
20090238692 | Blade of a turbo machine - The invention relates to a blade for a turbo machine
| 09-24-2009 |
20090311105 | ROTARY METER FLEXIBLE EDGE IMPELLER ASSEMBLY - An assembly for use in a rotary positive displacement fluid meter having an inner body wall surface that includes a first impeller having an outer surface located within the rotary positive displacement fluid meter and adapted to be directly driven by a fluid flow. The assembly also includes a flexible edge member situated at a distal end of the impeller such that there is a clearance between the flexible edge member and the inner body wall of the rotary positive displacement fluid meter. The impeller defines a longitudinal axis and the flexible edge member has a length along the longitudinal axis and a width in a direction that is orthogonal to the longitudinal axis. | 12-17-2009 |
20100014981 | VARIABLE-TWIST ROTOR BLADE CONTROLLED BY HUB PITCH ANGLE AND ROTATIONAL SPEED - The twist distribution of torsionally-flexible rotor blades is adjusted by exploiting centrifugal effect on inertial torquers affixed at one or more stations along the blade span. Twist is thereby made to vary passively as a function of rotor speed and hub incidence angle. With inertias of appropriate size and location, the twist variation is such that high rotor efficiency is maintained over a wide range of operating conditions. Satisfactory dynamic behavior of the blade, including cyclic-pitch response and flutter resistance, is simultaneously achieved. | 01-21-2010 |
20110255987 | COMPOUND BALDE OF A FAN - The invention relates to a compound blade and a fan installed with it. The compound blade is composed of at least a flexible layer and a rigid layer, with the rigid layer smaller than the flexible layer. So the edge of the compound blade is only formed of the flexible layer after the flexible layer combined with the rigid layer. A fan installed with the compound blade can not only run without danger because of the flexible layer, but also run as efficiently as a general one owing to the rigid layer. | 10-20-2011 |
20120294727 | RADIALLY COMPRESSIBLE AND EXPANDABLE ROTOR FOR A FLUID PUMP - In a rotor for a fluid pump which is made radially compressible and expandable and has a hub ( | 11-22-2012 |
20120294728 | WIND DIODE SYSTEMS - A wind diode with vanes having flexible flaps arrayed linearly along flap supports to catch the wind against the flaps supported by a filament array or, rotating to the opposite direction, to allow the wind to pass through the filament array by moving the flaps into a position that does not catch the wind. By using multiple flaps in the array, variations in the wind velocity profile across the vane are accounted for, thereby reducing drag. The wind diode is preferably mast-mounted, with the drive train attached to the exterior of the mast. Vertical and horizontal wind diodes are possible, as is a hybrid that is reconfigurable to be used in either orientation. The drive train preferably uses a continuous variable range transmission to provide constant speed output. | 11-22-2012 |
20130108458 | VERTICAL AXIS WIND TURBINE WITH SOFT AIRFOIL SAILS | 05-02-2013 |
20130287588 | FAN BLADE - A fan blade for a turbine system includes a root portion connectable to a rotating member of a turbine system and airfoil portion having a morphable portion on an edge of the airfoil portion. The morphable portion includes a plurality of layers aligned unsymmetrically relative to each other in a thickness direction and changes in shape in response to a change in a speed of the airfoil portion. | 10-31-2013 |