Abstract: A ceiling fan cover that can be easily placed onto and removed from a ceiling fan to provide the fan from dust, wind, water, moisture, paint and other potentially harmful element. The cover can be constructed of a flexible or non-flexible material that contains opening and closing means that permit the cover to be placed onto and closed around said fan and then opened to remove the cover from the fan. The cover preferably is made of a material to permit its reuse.

Abstract: The present invention concerns a wind power installation and in particular the identification of a wind power installation as an aviation obstruction. The object of the present invention is to provide a simple daytime identification which can be easily modified and which avoids the disadvantages of the blades identified by color marking. Apparatus for temporary signal identification of a wind power installation wherein the apparatus comprises a sheath which is of a predetermined colored configuration and also has releasable fixing means for releasably fixing the sheath to a rotor blade of the wind power installation, wherein during fixing the sheath at least partially encloses the rotor blade.

Abstract: The invention relates to a rotor blade (60) of a wind energy plant with a top side (suction side) and a bottom side (pressure side) wherein profiles (21, 22, 23, 24, 25) with a front edge and a back edge (62) in cross-section are designed along a longitudinal axis between a rotor blade root and a rotor blade tip, one designed-based direction of air inflow (31, 32, 33, 34, 35) is predetermined for each profile (21, 22, 23, 24, 25) and the profiles (21, 22, 23, 24, 25) in the outer area facing the rotor blade tip are designed with a relative thickness of less than 30%.

Abstract: A lift device for a rotor blade and a method for increasing the lift of a rotor blade for a wind turbine are disclosed. The rotor blade has exterior surfaces defining a pressure side and a suction side extending between a leading edge and a trailing edge. The lift device includes a first aerodynamic surface configured for mounting to the pressure side of the rotor blade, and a second opposing aerodynamic surface configured to interact with wind flowing past the lift device. The lift device has a generally increasing cross-sectional area in a flow direction of the wind. The lift device is configured to increase the lift of the rotor blade.

Abstract: The subject of the present invention is to provide a blade end portion protecting bag which is fit onto an end portion of a plurality of blades for protecting the blade end portion from damage when the plurality of the blades are hoisted with a rotor head to the position of an upper nacelle in assembling a wind turbine, the protecting bag having such structure that a rope joint for connecting a control rope is hard to break and therefore the durability of the rope joint portion is improved; and a rotor installing method for installing the rotor to the nacelle with the protecting bag fit onto the blade.

Abstract: A kit for decorating ceiling fan blades is provided. The kit includes a plurality of fan blade covers adapted to readily conform to the shape of a ceiling fan blade. The covers are embellished with interchangeable decorative images or themes selectable by user.

Abstract: A rotor blade assembly is disclosed. The rotor blade assembly includes a main rotor blade, the main rotor blade including a pressure side and a suction side extending between a leading edge and a trailing edge, and an auxiliary rotor blade associated with the main rotor blade, the auxiliary rotor blade including a pressure side and a suction side extending between a leading edge and a trailing edge. The rotor blade assembly further includes a support member connecting the auxiliary rotor blade to the main rotor blade. The auxiliary rotor blade is configured to modify a lift force associated with the rotor blade assembly.

Abstract: A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, the rotor blade further defining a pitch axis. The rotor blade assembly further includes a noise reducer mounted to the rotor blade. The noise reducer includes a base plate defining a base line, a plurality of noise reduction features extending from the base line, and a plurality of apertures defined in the base plate. Each aperture is positioned on an opposite side of the base line from the plurality of noise reduction features such that the aperture is fully defined in the base plate.

Abstract: A rotor blade assembly is disclosed. The rotor blade assembly includes a rotor blade and a blade extension. The rotor blade has a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade further has an aerodynamic profile. The blade extension is mounted to the rotor blade. The blade extension includes a cutaway mounting portion for mounting the blade extension to the rotor blade such that the blade extension is generally flush with at least one of the pressure side or the suction side of the rotor blade. The cutaway mounting portion defines a notch configured to locate the blade extension relative to the rotor blade.

Abstract: An expansion assembly for a rotor blade of a wind turbine is disclosed. The expansion assembly may generally include a spacer having a first end configured to be attached to a blade root of the rotor blade and a second end configured to be attached to a hub of the wind turbine. Additionally, the expansion assembly may comprise a wing defining a substantially aerodynamic profile and including a base portion configured on the spacer and an outboard portion extending from the spacer in a generally spanwise direction. The outboard portion of the wing may generally be configured to be disposed adjacent to at least one of a suction side and a pressure side of the rotor blade.

Abstract: A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, the rotor blade further defining a pitch axis. The rotor blade assembly further includes a noise reducer mounted to the rotor blade. The noise reducer includes a base plate defining a base line, a plurality of noise reduction features extending from the base line, and a plurality of apertures defined in the base plate. Each aperture is positioned on an opposite side of the base line from the plurality of noise reduction features such that the aperture is fully defined in the base plate.

Abstract: Efficient traditionally appearing ceiling fan blades with aerodynamical upper surfaces and wide tip ends for ceiling fans with blades formed from plastic and/or wood and/or separately attached surfaces that run at reduced energy consumption that move larger air volumes than traditional flat shaped ceiling fan blades. And methods of operating the novel ceiling fans blades for different speeds of up to and less than approximately 250 rpm. The novel blades twisted blades can be configured for ceiling fans having any diameters from less than approximately 32 inches to greater than approximately 64 inch fans, and can be used in two, three, four, five and more blade configurations. The novel fans can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional flat and planar upper and lower surface blades.

Abstract: The invention relates to a pitch controlled wind turbine blade including a pressure surface side and a leeward surface side, where the surfaces establishes a leading edge and a trailing edge. The blade includes a turbulence generating mechanism where the mechanism is placed on the leeward surface sides of the wind turbine blade and at the outer section of the wind turbine blade in direction of the blade tip. The invention further relates to a wind turbine including at least two pitch controlled wind turbine blades and a pitch controlling mechanism for pitching the blades. The blades include a turbulence generating mechanism where the mechanism is placed on the leeward surface sides of the wind turbine blades and at the outer section of the wind turbine blades in direction of the blade tips.

Abstract: A wind turbine blade comprising one or more oscillation dampers for damping oscillations or vibrations of the wind turbine blade. The first damper parts being rigidly connected to the blade or being a part of the blade. The dampers further comprise second damper parts, wherein the first damper part surfaces and the second damper part surfaces are arranged to move relatively to each other during the oscillations. Even further the dampers comprise a load transferring coupling, coupling the first damper part surfaces and the second damper part surfaces, so that the relative movement results in a oscillation-damping dissipation of kinetic energy.

Abstract: A dust collecting cover assembly capable of being covered upon a blade comprises a rotary disk having an axial hole for connecting with other elements; at least one blade set having at least one blade which is extended from the rotary disk; a rotary shaft having one end pivotally to the axial hole of the rotary disk for pivotally connecting with other driving elements; a driving device connected to another end of the rotary shaft directly or indirectly for driving the rotary shaft to rotate so that the blades also rotate; and at least one dust collection cover being covered or adhered to the blade.

Abstract: In a supersonic area, on a leading edge (2) of a compressor blade (1) for a gas turbine engine, a replaceable, longitudinally elastically deformable leading edge rail (7) with slender tip (11) and limited weight is positively held in a locating groove (3) and at a stop (6) and elastically locked by the curved blade form. While the maintenance effort is reduced, safe operation and long service life of the compressor (fan) are ensured.

Abstract: An axial flow turbine motor is provided which includes a rotor with a peripheral row of drive blades and a peripheral band-shaped wall element radially clamped against the tops of the drive blades, and a housing with at least one pressure medium inlet nozzle and an annular inner surface surrounding the rotor drive blades and the wall element, wherein the wall element is arranged to withstand centrifugal forces and uphold its clamping engagement with the drive blades at rotor speed levels up to a predetermined speed level, but to expand and loosen its clamping engagement with the drive blades at speed levels above the predetermined speed level, thereby moving into contact with the annular surface and interfering with the rotational movement of the rotor so as to prevent the rotor from reaching hazardous high speed levels.

Abstract: Efficient traditionally appearing ceiling fan blades with aerodynamical upper surfaces and wide tip ends for ceiling fans with blades formed from plastic and/or wood and/or separately attached surfaces that run at reduced energy consumption that move larger air volumes than traditional flat shaped ceiling fan blades. And methods of operating the novel ceiling fans blades for different speeds of up to and less than approximately 250 rpm. The novel blades twisted blades can be configured for ceiling fans having any diameters from less than approximately 32 inches to greater than approximately 64 inch fans, and can be used in two, three, four, five and more blade configurations. The novel fans can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional flat and planar upper and lower surface blades.

Abstract: A ceiling fan scent holder and placement handle which allows a user to distribute fragrance or aromatic substances into the air by using ceiling fans is provided. Said scent holder comprises a lune-shaped piece with an interior channel into which is placed a scent packet, vent holes in each side of a scent holder, and a magnet affixed to the holder top or holder bottom. Said scent holder may be removably placed inside a bracket well of a blade mounting bracket or removably attached to other parts of a ceiling fan via said magnets or also using hook and loop fasteners. A placement handle, comprising a telescopic handle with rotatable arm having at least one magnet affixed between or to prong located at the arm's distal end, may be used to easily place or attach a scent holder in a user-determined ceiling fan location.

Abstract: Disclosed is a ceiling fan cover for protecting a ceiling fan while the ceiling fan is not in use. The invention comprises a cover, preferably of a semi-waterproof, vinyl material, that encloses an indoor or outdoor ceiling fan. The invention also includes an attachment means, preferably a zipper, to close the cover around the ceiling fan's blades and a drawstring to tighten up the cover around the top of the fan. The invention could have an additional drawstring to cinch the middle. An alternative embodiment would be made of a plastic, disposable material, for use by painters to protect ceiling fans. When the cover is in place, it prevents ceiling fan blades from spinning in the wind or swinging up and breaking off, and also protects the fan from dust and debris.

Abstract: The Ceiling Fan Blade Slipcovers is a potential new commercial product generally involving ceiling fans. This product is put on each blade to protect the blades from dirty greasy build up. No more scrapping or overhead cleaning of ceiling fan blades. The slipcovers are also disposable too. It's like changing blown out light bulbs. When dirty greasy build up gets on them take them off throw away replace with a new set of slipcovers. The slipcovers are much easier and quicker to change than to clean ceiling fan blades.

Abstract: A fan device includes a protective net and a fan. The protective net has a mounting plate. The fan comprises a base, a coil assembly, a blade assembly and a permanent magnet. The base is provided on the mounting plate of the protective net. The coil assembly is provided on the base. The blade assembly is provided rotatably on the base. The permanent magnet is provided in the blade assembly adjacent to the coil assembly. Via the above arrangement, since the fan is connected to the protective net with the fan being disposed on the protective net, a frame can be omitted to reduce the material cost. Further, when being mounted to a housing of an electronic device, the present invention can be assembled or disassembled very easily.

Abstract: A gas turbine engine is used for power generation or propulsion and includes vanes. Each vane includes a trailing edge having a curvature and cooling slots that cool the vane. A photochemical edge shield includes an edge and projections that project from the edge. Before coating the vane, the photochemical edge shield is positioned on the vane such that each of the projections is received in one of the cooling slots. A ceramic coating is then applied to the vane. The photochemical edge shield prevents the ceramic coating from entering and clogging the cooling slots of the vane during the ceramic coating process.

Abstract: A bell-shaped ornamental cover of a ceiling fan mainly makes the bottom of a hanging bell covered by an ornamental cover to keep exposed screws hidden to beautify the ceiling fan. The hanging bell has its bottom shrunk as a neck opening with at least two engaging projections extended towards the center. The ornamental cover possesses a positioning ring extended upward around its inner circumference for being fixed in the neck opening. The positioning ring has its outer wall extended outward with plural locking portions for corresponding to the engaging projections that are respectively to be engaged with a locking groove formed inside the locking portions. In assembling, just aim the engaging projections at recesses formed between every two adjacent locking portions and then, turn around the ornamental cover.

Abstract: A kit for decorating ceiling fan blades is provided. The kit includes a plurality of fan blade covers adapted to readily conform to the shape of a ceiling fan blade. The covers are embellished with interchangeable decorative images or themes selectable by user.

Abstract: A ceiling fan, including a plurality of blades, wherein at least one surface of at least one blade in the plurality of blades is covered by a decorative motif.

Abstract: A spoiler attached to helicopter main rotor blades, tail rotor blades, propellers, aircraft wings, and machined into turbine blades, that reduces vibration and silences their operation. Also, when added to a substantial part of the trailing edges of its rotor blades, the spoiler eliminates the repetitive pop-pop sound common to current helicopter flight. Preferably, the spoiler is made from durable resilient materials that bend with resistance for high speed oscillation and it is secured on the top or bottom side, or both, of the trailing edge of a blade or wing. Further, the free edge of the spoiler exhibits a non-repeating pattern of feather-like projections that collectively break up vortex formation so that the next wing or blade traveling through the same location has clean air/fluid in which to move. In addition to noise reduction, the spoiler increases blade efficiency and wing lift.

Abstract: A fan blade assembly includes a fan blade and a blade iron. The proximal end of the blade iron is configured for securement to a conventional, commercially available fan motor. An openwork defines the perimeter of the fan blade. A decorative cover spans and is secured to the openwork. The distal end of the blade iron includes a fixture for detachably receiving and holding the proximal end of the openwork.

Abstract: The airfoil of fan/compressor and turbine rotors is constructed to include a leading edge that is detachable. The leading edge includes an airfoil section and an attachment that is adapted to fit into a complementary groove formed in the rotor disk. The detachable leading edge is efficacious in integrated bladed rotor (IBR or BLISK) designs because damage to the leading edge can be fixed by either removing the leading edge and repairing it or replacing it without having to disturb the remaining portion of the IBR.

Abstract: A wind turbine blade is situated on a wind turbine and includes a side and a tip. The blade is configured to rotate about an axis upon an impact of a wind flow on the blade. An active flow modification device is disposed on the blade. The active flow modification device is configured to receive active flow instructions and to modify the wind flow proximate to the blade. The resulting wind turbine blade uses these active flow modifications to achieve reduced loads, reduced aerodynamic losses, reduced noise, enhanced energy capture, or combinations thereof.

Abstract: A filter assembly for mounting on a conventional or ceiling fan blade includes a fan blade mount, a filter mount, and an air filter. The fan blade mount has a blade mount slot formed therein that is dimensioned to slidably engage a ceiling fan blade. The filter mount is coupled to the fan blade mount and has at least a portion thereof that is disposed substantially perpendicular thereto. The air filter is coupled to the filter mount and extends a distance therefrom in a direction perpendicular to at least a portion of the fan blade mount slot.

Abstract: A ceiling fan blade-mounted air freshener including a wedge-shaped housing with a clip attached to the housing for removably mounting the air freshener to a ceiling fan blade. The interior of the wedge-shaped housing defines an air-flow duct. Air enters air intake apertures provided in a low forward wall of the housing and passes through a porous fragrance emitting unit and exits through vent apertures provide in the top of the housing. The housing is mounted on a fan blade such that the low forward wall faces the leading edge of the fan blade.

Abstract: The present invention features a fluid flow regulator that functions to influence fluid flow across an airfoil or hydrofoil, as well as various rotating or rotary devices, including propellers, impellers, turbines, rotors, fans, and other similar devices, as well as to affect the performance of airfoils and hydrofoils and these rotary devices subjected to a fluid. The fluid flow regulator comprises a pressure recovery drop that induces a sudden drop in pressure at an optimal pressure recovery point on the surface, such that a sub-atmospheric barrier is created that serves as a cushion between the molecules in the fluid and the molecules at the airfoil's or hydrofoil's surface. More specifically, the fluid flow regulator functions to regulate the pressure gradients that exist along the surface of an airfoil or hydrofoil.

Abstract: The conventional fan blade is replaced by a frame over which any of a wide range of decorative fabrics or other similar materials is drawn and secured by a clamping method to form a lightweight fan blade of any surface design desired by the user. The decorative fabric replaces the heavy fan blade while still providing its function of air circulation. The same decorative fabrics or other similar materials are also used as coverings or trim for the body of the fan motor housing. The fan blade frame may take any shape suitable for causing the circulation of air as by a conventional fan blade. Elimination of the fan blade mass of conventional designs makes possible significant reductions in power consumption, and significant reductions in stress, wear, and tear on the fan's ceiling mountings.

Abstract: Methods and systems for starting propeller driven aircraft and other devices are disclosed. A system in accordance with one embodiment of the invention includes a removable fixture that is coupled to the propeller and has at least one portion exposed to a flowstream to rotate the propeller during engine start-up. The fixture is configured to separate from the propeller after the engine begins to turn over (e.g., after the engine starts and/or rotates above a threshold rate). Accordingly, the system can include a releasable link between the fixture and the propeller.

Abstract: A fan blade is provided with a recess for mounting an air freshener insert therein. The air freshener insert, after being mounted in the recess provided in the blade, releases a fragrance which is dispersed in the air when the fan blade is in rotary motion due to airflow over the air freshener insert.

Abstract: The conventional fan blade is replaced by a frame over which any of a wide range of decorative fabrics or other similar materials is drawn and secured by a clamping method to form a lightweight fan blade of any surface design desired by the user. The decorative fabric replaces the heavy fan blade while still providing its function of air circulation. The same decorative fabrics or other similar materials are also used as coverings or trim for the body of the fan motor housing. The fan blade frame may take any shape suitable for causing the circulation of air as by a conventional fan blade. Elimination of the fan blade mass of conventional designs makes possible significant reductions in power consumption, and significant reductions in stress, wear, and tear on the fan's ceiling mountings.

Abstract: A method for the improvement of wind turbine rotor efficiency blades of a wind turbine rotor with serrated trailing edges each having a plurality of span-wise, periodic indentations, in the form of saw teeth having approximately 60 degrees included angles between adjacent vertices. The efficiency of an existing wind turbine rotor is improved by the attachment of an apparatus to at least part of the trailing edge of the wind turbine blades, the apparatus being in the form of a serrated panel that is fixed to the surface of the blade and has the serrations extending into the airflow behind the trailing edge of the existing blade. The efficiency of a new wind turbine blade is improved by manufacturing the blade with serrations of at least part of the trailing edge of the wind turbine blade.

Abstract: A ceiling fan blade cover for positioning over a fan blade. The cover has a covering portion and a plurality of strategically positioned adhesive strips. The covering portion is wrapped around the blade, and the adhesive strips adhere the cover to itself around the blade. A perforated strip along the cover splits the cover longitudinally to allow the cover to be easily removed from the blade.

Abstract: An air purifier is provided for mounting to a leading edge of a fan paddle so that equal, mirror-image portions reside above and below the fan paddle. The air purifier is formed with a synthetic fiber filter medium assembled to a lattice framework. Adhesive tape strips are positioned on the framework for mounting the air purifier to the fan paddle.

Abstract: The present invention features a fluid flow regulator that functions to significantly influence fluid flow across an airfoil or hydrofoil, as well as various rotating or rotary devices, including propellers, impellers, turbines, rotors, fans, and other similar devices, as well as to significantly effect the performance of airfoils and hydrofoils and these rotary devices subjected to a fluid. The fluid flow regulator comprises a pressure recovery drop that induces a sudden drop in pressure at an optimal pressure recovery point on the surface, such that a sub-atmospheric barrier is created that serves as a cushion between the molecules in the fluid and the molecules at the airfoil's or hydrofoil's surface. More specifically, the present invention fluid flow regulator functions to significantly regulate the pressure gradients that exist along the surface of an airfoil or hydrofoil.

Abstract: A ceiling fan assembly is provided having a frame defining a plurality of fan blades, a replaceable one-piece fabric covering attached to the frame, and a frame holder that supports and positions the frame and attaches it to a fan motor. The fabric covering may be used to provide a visual display such as decoration or advertising.

Abstract: A cover for a fan blade. The cover includes a sleeve having an open end for receiving the fan blade. The sleeve has hook and loop fasteners that are configured to engage each other to secure the sleeve about the fan blade. The cover also includes an ornament and connection features extending from the sleeve and the ornament. The connection features engage each other to connect the ornament to the sleeve such that, as the fan blade rotates, the sleeve and ornament rotate therewith.

Abstract: A fan blade includes a shaft base and plural wind guiders formed integral with the shaft base. The wind guiders are fixed spaced apart equidistantly on the peripheral edge of the shaft base. Each wind guider is formed integral with one or more than one netted portions, and each netted portion is fixed with non-woven cloth having sticky material fixed thereon. The sticky surface of the non-woven cloth is applied with activated carbon, or fragrant material able to give out fragrance or material able to remove bad smell in air. The fan blade has functions of filtering dust in air and giving out fragrance.

Abstract: A method for removing pollutants from a gas such as air includes attaching a multi-layer stack of sheets to the surface of a fan blade. The sheets have a tacky surface disposed on their outward facing side, so that as the fan blade rotates pollutants are captured by the tacky surface. When the tacky surface of the top most sheet becomes contaminated with pollutants, it is peeled off to expose a clean uncontaminated next lower sheet. In an embodiment of the invention, each sheet has a tab which facilitates the identification and removal of the topmost sheet when it becomes contaminated with pollutants.

Abstract: A protector for protecting aircraft, particularly helicopter rotor blades, from absorbing the sun's infrared rays and the accompanying heat build-up in order to keep adhesive material between spar connections from debonding and to avoid delamination from the rotor blade's composite skin. The rotor blade protector includes a cover configured to encircle the length of the rotor blade and a guide form for installing and removing the cover. The inner surface of the cover is coated, by vacuum deposition technology, with aluminum, titanium, or other metals or alloys. The coating thickness will be in the order of 9-30 billionths of a meter thick. A stripper rod is attached to the guide so that aircraft personnel can install and remove the protector from the helicopter rotor blade while standing on the ground. Optionally, a series of ribs can be provided along the cover to provide increased air insulation around the rotor blade.

Abstract: A fan blade cover for a fan blade of a ceiling fan includes an outer edge defining a main body. The main body has an outside surface and an inside surface. The outer edge of the main body is fold over to the inside of the cover from the top to creating a passage for the draw- string, an elastic string is threaded through the passage, to selectively fix the fan blade cover to the fan blade will not fall off the ceiling fan blade. The outer edges are sealed around the inside edge of the cover.

Abstract: The adjustable ceiling fan blade cleaner consists of a clamp that connects around the body of a ceiling fan motor via a two-member telescoping ring. Two arms project out the end of the cleaner. Each arm then has a section of cloth that hangs down and slightly drapes over the fan blade in much the same manner as a flag. Thus as the blades of the fan turn, the cloth swipes off any dust. When dirty, the cloths are simply slid off of the end, washed, and then replaced. Disposable, one-time cleaning cloths may also be used as well. The use of the attachable duster for ceiling fan allows for virtually effortless cleaning of ceiling fan blades in a manner, which is quick, easy and effective.

Abstract: A method for removing pollutants from a gas such as air includes attaching a multi-layer stack of sheets to the surface of a fan blade. The sheets have a tacky surface disposed on their outward facing side, so that as the fan blade rotates pollutants are captured by the tacky surface. When the tacky surface of the top most sheet becomes contaminated with pollutants, it is peeled off to expose a clean uncontaminated next lower sheet.

Abstract: A fan blade provided with an active carbon filter bed, wherein, an opening is provided in the center of the fan blade, and said opening is covered with an active carbon filter bed. And said active carbon filter bed can be in the form of powder, grain or fiber attached by any means to non-woven fabric, fiber layer, staple on the base filter element of porous PE or PU foam. Furthermore, both of the active carbon filter bed and the fan blade can be adhered to each other by glue, adhesive band, equi-directional magnet or other adhesion or structure.