Match Document Document Title
6386830 Quiet and efficient high-pressure fan assembly  
A high-pressure vane-axial fan assembly is provided. A rotor assembly has a plurality of rotor blades disposed circumferentially around and extending radially outward from a hub. Each rotor blade...
6382919 Two-phase impeller with curved channel in the meridian plane  
An Improved impeller which imparts energy to or receives energy from a multiphase fluid comprising at least one gas phase and at least one liquid phase is disclosed. The impeller comprises an...
6364615 Blade for the rotary wings of an aircraft  
The present invention relates to a blade with a swept-back tip for the rotary wings of an aircraft, particularly a helicopter, said blade (1) being formed from successive elementary cross...
6364614 Spinner with continuous 3-fold symmetry for multiple utilitarian, educational and ornamental uses  
The Mamikon spinner is a continuous 3 twist, single surface, having threefold symmetry and dynamic properties. It spins with a slight flow of air in the direction of the axes, and when rotated...
6361279 Blade profile for aircraft rotor and rotor comprising same  
The invention concerns a blade profile for aircraft rotor, comprising, between a leading edge (1A) and a trailing edge (1B), a suction face (2) and a blade face (3) whereof the geometric locus of...
6354798 Blade for a fluid-flow machine, and steam turbine  
A blade for a fluid-flow machine is directed along a blade axis. Cross-sectional profiles which are disposed at a distance from one another axially and at right angles to the blade axis are offset...
6340290 Controllable pitch propeller with a fail safe increased pitch movement  
A controllable pitch propeller is provided with a blade that naturally tends to rotate in a direction toward maximum pitch as a result of the hydrodynamic forces on the blade. As a result, the...
6315522 Helicopter blade aerofoil and helicopter blade  
Upper and lower faces of a helicopter blade aerofoil are defined by the following coordinates. TBL TABLE 1 X/C Yup/C Ylow/C 0.00000 0.00000 0.00000 0.00100 0.00511 -0.00584 0.00250 0.00843...
6312216 Multiphase turbo machine for improved phase mixing and associated method  
The invention is a device and method which varies the pressure of a multiphase fluid comprising at least one liquid phase and at least one gaseous phase. The device comprises a housing, a hub, a...
6276899 Impeller manufacturing process  
A method of manufacturing an impeller, comprising machining hub, shroud and core portions, such that contacting surfaces between the hub and core, and shroud and core form mating surfaces, for...
6266958 Stator wheel for a hydrodynamic torque converter  
A stator wheel for a hydrodynamic torque converter comprises a stator wheel hub arrangement and a plurality of stator wheel blades arranged successively in the circumferential direction of the...
6254476 Air circulating fan  
In a fan for circulating an air stream in an air-treating environment, an improved fan blade structure designed to optimize airflow along the rotational axis of the fan blade within an optimized...
6244821 Low speed cooling fan  
A low speed cooling fan that is designed to cool individuals located in large industrial buildings. A fan with a diameter between 15 to 40 feet consisting of a plurality of blades, with each in...
6241474 Axial flow fan  
An axial flow fan has a hub and plural blades. Each blade extends from hub to a blade support ring and has a pitch which decreases over a first inner part of the radial extent and increases over a...
6238184 Axial fan, particularly for motor vehicles  
The fan comprises a central hub and a plurality of blades extending radially from the hub and each having a root portion adjacent the hub, a radially intermediate portion, and a radially...
6238186 Method of manufacturing a blade for fluid machinery  
A method for manufacturing a blade for fluid machinery from a plate-shaped component which is first machined to make a blade preform. The preform is then worked to obtain a blade in its final...
6238185 Fan with low noise, high air flow and high wind pressure  
This invention relates to a fan. According to the rotational direction, the outermost point of the front side of the fan is leading to the innermost point of the front side such that the portion...
6237873 Composite material wing structure  
A composite material wing structure is disclosed, comprising a plurality of composite material multi-spar structures, each including a plurality of spar extending in a span direction, placed in...
6238187 Method using laser shock peening to process airfoil weld repairs pertaining to blade cut and weld techniques  
A method is disclosed for repairing damage to an airfoil. The method provides for the removal of a section of the airfoil that substantially encompasses the damaged area, which consequently leaves...
6224338 Polygonal windmill  
The polygonal windmill is essentially a windmill with the blade components contained within a rigid polygonal frame, preferably cubic in shape. The polygonal windmill relies on its much larger...
6206641 Micro fan  
Disclosed is a micro fan. The micro fan comprises a hub rotatably mounted to a shaft, and a plurality of blades radially formed on a circumferential outer surface of the hub, wherein each blade...
6195983 Leaned and swept fan outlet guide vanes  
A gas turbine engine fan assembly has a plurality of axially swept fan exit guide vanes circumferentially disposed around an axially extending centerline, a plurality of fan frame struts having...
6190122 Intake and exhaust air damper with movable motor fan assembly  
An intake and exhaust fan assembly is provided having a motor and fan assembly mounted for movement on rails toward and away from a rotatable blade damper mounted on an angle to the motor/fan...
6168383 Rotor blade for rotary-wing aircraft  
A rotor blade (1) comprises a main blade (2) having a substantially fixed chord length (C), a front tip blade (3) having a chord length (C1) smaller than that of the main blade and connected to...
6164918 Helicopter blade aerofoil  
Upper and lower surfaces of an aerofoil are defined by the following coordinates given in the table below, and the configuration of a leading edge of the aerofoil is defined by the following...
6155784 Variable pitch aircraft propeller  
A propeller for aircraft has a tip-to-tip flex-beam spar and torsionally stiff hollow blades bonded to the spar throughout an outer portion of the blades. The spar has two end caps which are...
6145787 Device and method for heating and deicing wind energy turbine blades  
The invention relates to heatable wind energy turbine blades and to a method of heating and deicing the turbine blades using conductive fabrics to displace and/or cease the buildup of ice on the...
6142738 Blade for rotary wing aircraft  
A blade for a rotary wing aircraft includes a blade tip winglet intended to reduce the blade-vortex interaction noise during descending flight. The winglet has, in plan view, an at least...
6132826 Method of manufacturing hollow blade and hollow blade manufactured by same  
In injection-molding first and second blade bodies (2, 3), convex parts (23, 32) are formed on the surfaces of the first and second blade bodies (2, 3), respectively. Then, a horn (16) of an...
6132181 Windmill structures and systems  
A windmill having a plurality of radially extending blades, each being an aerodynamic-shaped airfoil having a cross-section which is essentially an inverted pan-shape with an intermediate section,...
6129528 Axial flow fan having a compact circuit board and impeller blade arrangement  
An axial flow fan comprising a printed circuit board which mounts the circuitry for operating the motor which is a bipolar winding motor. A voltage regulator IC and a driving IC for a bipolar...
6116856 Bi-directional fan having asymmetric, reversible blades  
A bi-directional fan includes asymmetrically-shaped fan blades wherein, at each transverse cross-section of the blade, the profile of the blade includes a leading portion lying on one side of a...
6113353 Axial fan  
In an axial fan having a plurality of blades (2, 2, . . . ) around an outer periphery of a hub (1), a cross-sectional configuration of each of the blades (2) at an arbitrary distance from a center...
6086330 Low-noise, high-performance fan  
The present invention provides a fan (100) that includes a hub (102) and a plurality of blades (104). The hub (102) has a blade attachment surface (106) that extends around the circumference of...
6086016 Gyro stabilized triple mode aircraft  
A triple mode aircraft which can take off as a helicopter, or in gyrocopter mode with no power to the rotors or as a conventional aircraft obtaining lift from a circular wing and in another...
6082969 Quiet compact radiator cooling fan  
A quiet compact radiator cooling fan having a hub portion, which extends radially outwardly and axially from its inlet to its outlet end, a shroud portion, which extends radially inwardly and...
6079948 Blade for axial fluid machine having projecting portion at the tip and root of the blade  
A blade for an axial fluid machine comprises an effective blade portion having a root portion and a tip portion and projecting blade portions. The projecting blade portions are defined by axis...
6079280 Insertion paddle wheel flow sensor for insertion into a fluid conduit  
A flow sensor using induction pickup and having an improved paddle wheel type impeller within an impeller housing having a concave opening defining a protective skirt area for shielding a portion...
6068446 Airfoils for wind turbine  
Airfoils for the tip and mid-span regions of a wind turbine blade have upper surface and lower surface shapes and contours between a leading edge and a trailing edge that minimize roughness...
6065936 Axial fan, method of manufacturing impeller for axial fan, and mold for manufacturing impeller for axial fan  
This invention provides a compact, flat axial fan which is not limited by the shape of an incorporated rotor magnet and ensures a sufficiently large air flow and wind pressure, wherein the slide...
6065352 Turbine meter with a rotor having accuracy enhancing rotor blades  
A turbine meter used for measuring the volume of fluid flowing through a conduit includes an elongated housing having an upstream end and a downstream end and a rotor mounted within the housing. A...
6039533 Fan blade, structures and methods  
An aerodynamic-shaped fan blade for use in a fan apparatus. The blade has a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge section, and a...
6039541 High efficiency ceiling fan  
Ceiling fan blades for low speed fan operation. The blades have a positive twist at the root motor portion of the blade and a slightly twisted rounded tip. The chord of the blades taper down from...
6030179 Airfoil structures and method  
An aerodynamic-shaped airfoil having a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge into the wind, and a trailing edge which has a flange...
6009763 Flow sensor and impeller therefor  
An air flow sensor and impeller flow for use in industrial, agricultural and civil applications as well as in process control, emission control and measurement. The impeller is suspended for free...
6010307 Propeller, structures and methods  
An aerodynamic-shaped propeller blade. The blade has a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge section, and a trailing edge section...
6007298 Optimum speed rotor  
A variable speed helicopter rotor system and method for operating such a system are provided which allow the helicopter rotor to be operated at an optimal angular velocity in revolutions per...
6000911 Blade with swept-back tip for the rotary wings of an aircraft  
The present invention relates to a blade with a swept-back tip for a rotary wings of an aircraft, a blade being formed of successive elemental cross sections. The blade is divided into different...
5993158 Method and apparatus for aeration using flexible blade impeller  
An impeller having flexible impeller blades with a stiffness which allows the blades to flex into a backward-curved impeller configuration at the maximum intended rotational speed of operation,...
5993161 Rotors with mistuned blades  
A method for designing a mistuned rotor with improved stability and forced response.