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| Number | Title | Issue Date |
| 8186964 | Spar assembly for a wind turbine rotor blade A spar assembly for a rotor blade of a wind turbine is disclosed. The spar assembly may generally include a first spar cap and a second spar cap spaced apart from the first spar cap such that a cross-sectional area is defined directly between the first and second sp... | 05/29/2012 |
| 8177515 | Wind turbine blade A sectional blade for a wind turbine comprising a first and a second blade section extending in opposite directions from a blade joint, and each blade section comprising a spar section forming a structural member of the blade. The blade sections are structurally con... | 05/15/2012 |
| 8177514 | Wind turbine blade A sectional blade for a wind turbine comprising a first and a second blade section extending in opposite directions from a blade joint, and each blade section comprising a spar section forming a structural member of the blade. The blade sections are structurally con... | 05/15/2012 |
| 8167570 | Fluid turbine blade and method of providing the same A fluid turbine blade is provided. The fluid turbine blade includes a centrally disposed longitudinal spar having a substantially circumferential cross section. The fluid turbine blade also includes at least one rib assembly affixed to said longitudinal spar. The fl... | 05/01/2012 |
| 8142164 | Rotor blade for use with a wind turbine and method for assembling rotor blade A method for assembling a rotor blade for use with a wind turbine. The method includes providing a blade sidewall at least partially defining a cavity extending from a blade root towards a blade tip of the rotor blade, the blade sidewall having a leading edge and a ... | 03/27/2012 |
| 8123488 | System and method for joining turbine blades A blade assembly including an outboard blade segment is provided. The outboard blade segment includes an outboard blade shell, first and second outboard bulkheads situated within the outboard blade shell, and an outer box supported by and aligned by the outboard bul... | 02/28/2012 |
| 8118559 | Lightning arrester system for a wind generator blade The invention relates to a lightning arrester system for wind generator blade, which replaces the standard main copper cable and which employs two strips of copper that extend along the entire length of the beam such as to be in direct contact with the carbon fibre.... | 02/21/2012 |
| 8096778 | Structural beam for a wind generator blade production method thereof Structural beam of a wind turbine blade comprising a body-root and a body-trunk in the form of a box with a section decreasing towards the blade tip, comprising various piles each formed by various layers of carbon fiber impregnated with a synthetic resin, located o... | 01/17/2012 |
| 8096779 | Rotorcraft blade provided with a radial segment and with at least one forwardly- and/or rearwardly-swept segment A rotorcraft blade (P) is provided in succession with a radial segment (1) and then a swept segment (2), the swept segment (2) being provided with at least one forwardly-swept segment (2′) and/or rearwardly-swept segment (2″). ... | 01/17/2012 |
| 8079819 | Optimization of premium fiber material usage in wind turbine spars The use of premium material in the construction of wind turbine blades may provide increases in blade efficiency and enable the use of thinner blades. By providing a spar cap having a section of premium material having a constant thickness, the use of the premium ma... | 12/20/2011 |
| 8075275 | Wind turbine spars with jointed shear webs A spar for a wind turbine blade includes at least one shear web extending between pressure and suction sides of the blade; and a joint, arranged substantially midway between ends of the shear web, for sizing the shear web. The joint may include a resilient and/or ex... | 12/13/2011 |
| 8070452 | Blade provided with a horizontally-wound spar, and a method of fabricating such a spar The present invention relates to a rotorcraft blade (1) provided with a distributed spar (10) on a leading edge (4), a suction side (2), and a pressure side (3) of the blade, and the invention also relates to a method of fabricatin... | 12/06/2011 |
| 8070451 | Modular construction for wind turbine blade A vertical axis wind turbine including a blade having a modular structure, comprising at least two connectable blade sections. Each section has an upper and lower panel with a cavity formed therebetween through which extends a spar. ... | 12/06/2011 |
| 7993104 | Turbine blade with spar and shell A turbine blade assembly with a spar and shell construction. The shell is held in place between a tip edge of the spar and an airfoil shaped groove on the platform surface. A segmented seal assembly is held within the groove between the shell bottom surface. The seg... | 08/09/2011 |
| 7976282 | Preform spar cap for a wind turbine rotor blade A spar cap for a wind turbine rotor blade. The spar cap may include multiple preform components. The multiple preform components may be planar sheets having a swept shape with a first end and a second end. The multiple preform components may be joined by mating the ... | 07/12/2011 |
| 7972114 | Composite blade root structure A spar of a rotor blade having moderate depth transitions to a relatively much deeper shank over a relatively short distance. This rapid transition enables a low-weight blade root that is structurally efficient, offers a high moment capability, and enables high Mach... | 07/05/2011 |
| 7942637 | Sparcap for wind turbine rotor blade and method of fabricating wind turbine rotor blade A sparcap for a wind turbine rotor blade. The sparcap includes a first carbon material layer coupled to an inner surface of the wind turbine rotor blade. The first carbon material layer extends along at least a portion of a length of the wind turbine rotor blade. A ... | 05/17/2011 |
| 7866951 | Wind turbine blades with cross webs A blade for a wind turbine includes a spar having a shear web, and at least one cross web extending from the spar. ... | 01/11/2011 |
| 7854594 | Segmented wind turbine blade A rotor blade for a wind turbine includes a plurality of individual blade segments, with each blade segment defining an internal passage extending between the longitudinal ends of the blade segment. A rigid spar member extends longitudinally through the internal pas... | 12/21/2010 |
| 7841835 | Spar cap for wind turbine blades A blade of a wind turbine is provided having an improved spar cap. The spar cap includes at least one trench extending in a substantially span-wise direction in at least a portion of the spar cap. At least one shear web is connected to the spar cap. At least a porti... | 11/30/2010 |
| 7762785 | Main rotor blade with integral tip section A main rotor blade assembly having a blade skin bonded to a main spar and a tip spar. ... | 07/27/2010 |
| 7758314 | Tungsten shell for a spar and shell turbine vane The present invention is a vane for us in a gas turbine engine, in which the vane is made of an exotic, high temperature material that is difficult to machine or cast. The vane includes a shell made from Tungsten, and is formed from a wire electric discharge process... | 07/20/2010 |
| 7758313 | Carbon-glass-hybrid spar for wind turbine rotorblades A fiber reinforced matrix for a wind turbine rotor blade includes glass fibers and carbon fibers embedded in the same matrix material. ... | 07/20/2010 |
| 7740452 | Highly extensible power and/or signal transmission cable as well as rotor blade with such a cable A fiber-composite rotor blade, especially of a rotary-wing aircraft, with a predefined rotor blade profile that has a predefined outer contour of the profile. The fiber-composite rotor blade includes a fiber-composite rotor blade structure having an upper and a lowe... | 06/22/2010 |
| 7740453 | Multi-segment wind turbine blade and method for assembling the same A multi-segment wind turbine blade comprises at least two blade segments. A first spar cap segment is attached to a first blade segment and a second spar cap segment is attached to a second blade segment. The first and second spar cap segments are configured to form... | 06/22/2010 |
| 7736131 | Turbine blade with carbon nanotube shell A turbine blade for use in a gas turbine engine, where the turbine blade is made from a spar and shell construction in which a thin walled shell is formed from carbon or molybdenum nanotubes arranged in a direction such that the nanotubes are under tension when the ... | 06/15/2010 |
| 7670116 | Turbine vane with spar and shell construction The present invention is a vane for us in a gas turbine engine, in which the vane is made of an exotic, high temperature material that is difficult to machine or cast. The vane includes a shell made from either Molybdenum, Niobium, alloys of Molybdenum or Niobium (C... | 03/02/2010 |
| 7470114 | Rotor blade for a wind energy turbine The rotor blade for a wind energy turbine comprising a longitudinal shell defining a root to be connected to a hub of a rotor, a tip, a forward edge and a rearward edge, the shell having a spar including two spar caps connected via at least one shear web arranged be... | 12/30/2008 |
| 7452189 | Ceramic matrix composite turbine engine vane A vane has an airfoil shell and a spar within the shell. The vane has an outboard shroud at an outboard end of the shell and an inboard platform at an inboard end of the shell. The spar has a first chamber essentially along the suction side and a second chamber alon... | 11/18/2008 |
| 7427189 | Wind turbine rotor blade A wind turbine rotor blade includes a pressure side sparcap having a carbon fiber reinforced section extending substantially a full longitudinal length of the pressure side sparcap and a suction side sparcap having a glass fiber reinforced section extending substant... | 09/23/2008 |
| 7410342 | Airfoil support A blade or a vane preferably used in a gas turbine engine, the blade or vane being formed of a metallic core or insert with a ceramic airfoil surface bonded to the metallic insert. The insert includes a series of concave and convex portions arranged along the outer ... | 08/12/2008 |
| 7377752 | Wind blade spar cap and method of making A wind blade spar cap for strengthening a wind blade including an integral, unitary three-dimensional woven material having a first end and a second end, corresponding to a root end of the blade and a tip end of the blade, wherein the material tapers in width from t... | 05/27/2008 |
| 7364407 | Transition zone in wind turbine blade The invention relates to a wind turbine blade and a transitional shell blank for the manufacture of the shell of a wind turbine blade, the blade or the transitional shell blank being made of fibre-reinforced polymer including a first type of fibres (1, 3, 6) ... | 04/29/2008 |
| 7360996 | Wind blade assembly and method for damping load or strain The transducers are incorporated in or laminated to wind blades and electrically connected to a self-powered electrical circuit. The transducers in combination with the self-powered electrical circuit improve the wind blades' response to changing wind conditions by ... | 04/22/2008 |
| 7353603 | Method for mounting rotor blades to a rotor hub of a wind power installation A method of mounting rotor blades to a rotor hub which is connected to a pod of a wind power installation, includes the following steps: rotating the rotor hub into a predetermined first position, fitting a rotor blade, rotating the rotor hub by means of the rotor b... | 04/08/2008 |
| 7334989 | Method for producing a rotor blade, a corresponding rotor blade and a wind power plant The invention relates to a process for producing a rotor blade for a wind power system, wherein at least two rotor blade elements are arranged one behind the other in a longitudinal direction of the rotor blade and are glued together via at least one, preferably at ... | 02/26/2008 |
| 7322798 | High structural efficiency blades and devices using same A blade for a rotor has integral stiffeners with at least one of unidirectional caps configured to carry blade bending loads in axial tension or webs to carry transverse shear resulting from blade bending. ... | 01/29/2008 |
| 7303373 | Wind turbine systems, monitoring systems and processes for monitoring stress in a wind turbine blade Wind turbine systems, monitoring systems, and processes for measuring stress in a wind turbine blade generally includes embedding and or disposing optical glass fibers on a surface of the wind turbine blade and monitoring light transmission through the optical glass... | 12/04/2007 |
| 7303374 | Disbond resistant composite joint and method of forming A disbond resistant multi-laminate composite product is provided having, a first member; a second member of composite material bonded to the first member; a third member of composite material bonded to at least the second member and being so positioned and arranged ... | 12/04/2007 |
| 7273349 | Fabric fan blade and fan body trim 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 fabr... | 09/25/2007 |
