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5971710 Turbomachinery blade or vane with a permanent machining datum  
A turbine blade (18) for a gas turbine engine includes a machining datum (60) that extends radially from a pocket (54) in the outer shroud (36) of the blade. The datum is spaced from a sidewall...
5965240 Metal/composite  
A composite article comprising of a non-metallic composite core, a fluoroelastomer adhesive layer which has a curing temperature substantially similar to the composite core, and a metallic...
5966525 Acoustically improved gas turbine blade array  
The blades (38) of a gas turbine engine fan rotor (32) are uniquely distributed in the rotor hub (48) so that combination tone noise attributable to one or more physical nonuniformities in the...
5957661 High efficiency to diameter ratio and low weight axial flow fan  
A high efficiency axial flow fan includes a hub, fan blades and a circular band. The hub rotates about a rotational axis when torque is applied from a shaft rotatably driven by a power source. The...
5944496 Molten metal pump with a flexible coupling and cement-free metal-transfer conduit connection  
A molten metal pumping device is disclosed that comprises a pump base including at least one input port, a pump chamber, and a discharge leading to an output port. A rotor is retained within the...
5934877 Rotor with logarithmic scaled shape  
A rotor (18) for use with a fluid flow generator or reactor, the rotor being intended to rotate about a central axis (19) and having a surface which defines an arcuate fluid pathway for fluid flow...
5911559 Airfoiled blade for a propeller  
An airfoiled blade for improving the performance of a propeller at low aircraft speeds and for maintaining good performance of the propeller at high aircraft speeds is disclosed. The blade...
5906179 High efficiency, low solidity, low weight, axial flow fan  
A high efficiency, low solidity, low weight, axial flow fan (100, 200, 300) includes a hub (102, 202, 302), fan blades (104, 204, 304) and a circular band (106, 206, 306). The hub (102, 202, 302)...
5879131 Main rotor system for model helicopters  
A main rotor is provided for use on a model helicopter. The main rotor includes rotor blades having an inboard section and an outboard section. The inboard section includes a higher camber, thin,...
5879132 Stainless steel type 13Cr5Ni having high toughness, and usage of the same  
An ultra high head pumpturbine power generating plant with a turbine having a runner rotating with water flow supplied through a high head conducting tube. A rotary electric machine rotates with...
5876610 Method and apparatus for monitoring liquid flow through an enclosed stream  
A liquid flow meter is designed to monitor the flow of a liquid through an enclosed stream such as through the tubes or internal passageways of a device such as a filtration system. The liquid...
5877566 Submersible magnetic motor having improved rotary blades  
A submersible magnetic motor having improved rotary blades comprising a magnetic motor body, a magnetic rotor and a rotary impeller wherein the rotary impeller comprises a rotary hub provided with...
5863494 Iron-nickel superalloy of the type in 706  
An iron-nickel superalloy of the type IN 706 has an addition of 0.02 to 0.3 percent by weight of boron and/or 0.05 to 1.5 percent by weight of hafnium. By means of this addition, a virtual...
5860788 Low drag fan assembly  
A fan assembly includes a circular first array of first fan blades; a first primary ring member supportively connecting inner extremities of the first blades about a fan axis, respective end...
5858558 Nickel-base sigma-gamma in-situ intermetallic matrix composite  
A nickel-base gamma-sigma intermetallic matrix composite material suitable for forming gas turbine engine components and structural coatings for such components. The composite material contains,...
5816775 Drainage pump with interposed disk  
A pump body 10 of a drainage pump 1A comprises a pump chamber 12, inlet 15, and outlet 17. A rotary vane 300 mounted in the pump body 10 is coupled to a motor mounted above the pump body 10, and...
5813837 Axial-flow impeller for mixing liquids  
An axial-flow impeller having a maximum blade width less than 20% of the impeller diameter, the pitch angle at the radial position 0.6 is 12°-22°, the width at the tip end portion of the blade is...
5800223 Marine propulsion device  
A marine propulsion device improves the handling characteristics and the responsiveness of the watercraft on which it is used. The propulsion device includes a pair of counter-rotating propellers....
5791878 Airfoiled blade for cargo transport aircraft  
An airfoiled blade is disclosed which comprises a plurality of airfoil sections, a root portion, and a tip portion. Each section has along substantially the entire length thereof a cross-sectional...
5775878 Turbine of thermostructural composite material, in particular of small diameter, and a method of manufacturing it  
The turbine comprises a plurality of blades disposed between two end plates and defining flow passages between an inner ring and an outer ring. The turbine is formed by first and second parts,...
5711653 Air lifted airfoil  
An aerodynamic-shaped airfoil having a cross-section which is essentially an inverted pan-shape with a leading edge into the wind and a trailing edge which has a flange doubled back underneath,...
5709419 Wind energy collection  
A method and device for collecting energy from wind includes an airfoil having an outer surface defining a leading edge, a central section of greatest breadth adjacent to which a Bernoulli effect...
5681145 Low-noise, high-efficiency fan assembly combining unequal blade spacing angles and unequal blade setting angles  
A vehicle engine-cooling fan assembly for circulating air to cool an engine. The fan assembly has a central hub with a plurality of blades extending radially outward from the central hub. Each...
5681146 Low head pumping system for fish farms  
An impeller pump for moving large volumes of liquid against heads of up to 1 meteris formed by a substantial circular housing having its axis substantially vertical in which an impeller is mounted...
5649807 Blade configuration for a ventilation fan  
A structure of a ventilation fan provided with a plurality of blades has a performance curve characterized by a gentle slope throughout the wide operating range instead of an S-hysteresis curve,...
5609472 Rotor blade for a rotary-wing aircraft  
A rotor blade for a rotary-wing aircraft, of an airfoil section has a basic blade thickness at 12% chord length, a portion of an increased blade thickness between the leading edge and a point...
5597138 Yaw control and stabilization system for helicopters  
A device for stabilizing yaw motion is provided for use on a helicopter having a main rotor rotatable about a main rotor axis, a power source, and a tail rotor boom with a longitudinal axis. The...
5595475 Agitating element  
The present invention generally pertains to an agitating element for agitating low-to-medium-viscosity liquids. The agitating element comprises an inner main blade and an outer side blade, and the...
5588804 High-lift airfoil with bulbous leading edge  
An airfoil defining the shape of the blades of a vehicle engine-cooling fan assembly. The airfoil has a leading edge; a rounded, bulbous nose section adjacent the leading edge; a trailing edge; a...
5540790 Single crystal nickel-based superalloy  
This invention relates to a single crystal casting to be used under high stress, high temperature conditions up to about 2030° F., characterized by an increased resistance to creep under such...
5536146 Combined generator system  
The present invention relates to a steam turbine comprising a rotor shaft integrating high and low pressure portions provided with blades at the final stage thereof having a length not less than...
5522220 High efficiency blade  
A vaned element of a fluid coupler such as a torque converter includes vanes having a depression extending from a leading surface area to a trailing edge of the vane. The depression avoids...
5513951 Blower device  
The present invention relates to a fan having a plurality of equiangularly spaced, radially extending blades. The spacing provided between adjacent blades is substantially constant along the...
5474425 Wind turbine rotor blade  
Horizontal axis, free yaw, self-regulated wind turbines which have strong, lightweight, fatigue resistant, fixed pitch, wood/GRE blades and exhibit superior performance a range of wind speeds. The...
5454695 High output engine cooling fan  
A high output fan assembly for cooling the radiator of a motor vehicle. The fan assembly comprises a shaft, first and second fans, and a motor. The first fan includes a plurality of first blades,...
5445215 Fan assembly with heat sink  
Heat transfer from the inside of a fan duct to the air is very good because the air in this region has a high velocity and is turbulent due to the rotation of the fan blades. Devices mounted on...
5443789 Low yttrium, high temperature alloy  
An improved nickel-based single crystal superalloy has both an extremely low sulphur content and a very low lanthanum, cerium, or lanthanum plus yttrium, or cerium plus yttrium, or content,...
5437541 Blade for axial fan  
A blade for use in an axial fan includes a plurality of vanes which each have a winglet formed on their front face to increase the air flow of the fan at a given blade velocity.
5417548 Root region airfoil for wind turbine  
A thick airfoil for the root region of the blade of a wind turbine. The airfoil has a thickness in a range from 24%-26% and a Reynolds number in a range from 1,000,000 to 1,800,000. The airfoil...
5403091 Spindle for rotary mixing device  
A novel rotatable mixing device having two intersecting mixing elements attached to an end of a rotatable shaft. The mixing elements intersect at 90°, have a generally U-shaped base portion, liner...
5403160 Fan blade configuration  
A fan blade includes a plate and a board fixed on the plate, an opening is formed in the fan blade for facilitating air circulation when the fan blade is operated. The plate and the board each...
5394016 Solar and wind energy generating system for a high rise building  
A solar and wind energy generating system for mounting to a building comprises a wind generator system including at least an auger shaped air engaging member. A plurality of wind generators having...
5386146 In-line auger driven charging system  
An in-line fluid medium driven charging system includes a fluid medium driven generator disposed in a fluid medium directing tube. The fluid medium driven generator includes an auger shaped, fluid...
5381048 Solar venturi turbine  
A solar venturi turbine includes an upwardly oriented venturi tube supported by a venturi support skirt. The venturi tube includes a tapered thermopane glass enclosure which allows sunlight to...
5366345 Turbine blade of a basic titanium alloy and method of manufacturing it  
A turbine blade, preferably used in the low pressure stages of a steam turbine, is formed from a basic titanium alloy. Near the blade tip, it has a region, including the blade leading edge with a...
5344102 Rotary-wing blade of rotary-wing aircraft  
A rotary-wing blade of a rotary-wing aircraft has an airfoil section which has an asymmetrical region of positive camber from its leading edge to its approximately 30-percent chord length point...
5332362 Blade for aircraft rotary wings, with swept-back tip  
The variation in the length of the chord L and the variation of the offset Y'f of the aerodynamic center are such that the leading edge (5) and the trailing edge (6) of the blade (1), along its...
5330326 Method for producing profiled parts by grinding and a turbomachine blade produced thereby  
A method for producing a profiled part from a blank, wherein the cross-sectional profile of the part to be produced differs in some portions both quantitatively and qualitatively from the...
5326168 Stirring blade unit  
A stirring blade unit includes a plurality of main blade bodies radially projected from the outer periphery of a boss and auxiliary blade bodies respectively provided at tip portions of the main...
5326226 Continuous curve high solidity hydrofoil impeller  
A high solidity impeller has a number of equally spaced blades, each formed from a sheet that is bent to a continuous cylindrical curve along a roll axis that lags (in the rotation direction) the...