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5320493 Ultra-thin low noise axial flow fan for office automation machines  
An ultra-thin low noise axial flow fan is provided for office automation machine. The center line along the blade from its root portion to its tip portion is circular arc form and it is...
5313103 Auger shaped fluid medium engaging member  
An auger shaped, fluid medium engaging member is disclosed which includes a helically or auger shaped outer region disposed about a longitudinal axis which passes through a central region of the...
5312230 Fan device capable of reducing the stagnant flow at the root area of fan blades  
An axial flow fan device capable of reducing the stagnant flow at the root area of blades. These blades 18 are arranged so that they extend radially from a boss portion 14 so that they are...
5310316 Impeller for a propeller pump  
The hub is conically formed, and the vanes attached thereto are given a substantially radial direction; consequently, the turning axes of the vanes are situated in the center of the vanes,...
5297931 Forward skew fan with rake and chordwise camber corrections  
An improvement to forwardly skewed axial fans whereby blade camber and rake are coordinated with skew. The blades are characterized in that a line defined by the points of maximum chordwise camber...
5292193 Apparatus for the high intensity dispersion of agglomerated powders in crowded suspensions having an agitator disk  
An apparatus for deagglomerating powder in a mixture of liquid and powder which contains a mixing tank, an agitator disposed within the mixing tank, and a baffle. The agitator disk is circular,...
5290149 Impeller for an axial-flow type fan  
The invention is directed to an impeller of an axial-flow type fan, in particular for appliances for drying and dressing hair, in which adjacent blades overlap each other completely over the...
5277661 Titanium MMC fanshaft with superalloy end attachment  
A first hollow titanium MMC driveshaft portion is diffusion bonded to a third portion which in turn is fastened to a second superalloy portion via circumferentially positioned pins which are...
5266009 Impeller structure for water jet propelled boat  
A water jet propelled boat is equipped with a water intake opening, a water jet outlet, and with a mixed flow type impeller, where the above mentioned water intake opening and the above mentioned...
5253979 Variable diameter rotor having an offset twist  
A variable diameter rotor for a tilt rotor aircraft has an inboard section having a linear twist from a root end to an outboard end thereof, and an outboard section telescoped over the inboard...
5249928 Fixed pitch propeller  
A fixed pitch propeller has blades that are not solely dependent on the blade angle dictated by the helical path of the blade tip. An outboard portion of the blade has a range of blade angles that...
5249993 Weed resistant boat propeller  
A weed resistant boat propeller is disclosed. The propeller includes a generally circular hub that is adapted for mounting to and being rotatably driven by a boat motor. There are a plurality of...
5246343 Fan assemblies and method of making same  
A low cost assembly and method for assembly of a fan having a hub, a spider with arms and blades attached to the arms is provided. The spider is arc welded to the hub and the blades are projection...
5241230 Cooling fan with reduced noise capability in an AC generator  
A vehicular AC generator comprising a stator supported by a front bracket and a rear bracket; a rotor fixed to a rotating shaft supported by the front bracket and the rear bracket through...
5238367 Impeller assembly for aquarium power filter  
A water pump including a rotating impeller is located between the two filter chambers, and pumps water from the aquarium tank, via the inlet conduit, into a corridor which communicates with the...
5236310 Marine propeller with performance pitch, including five blade version  
A marine propeller (100) combines progressive pitch with both increasing pitch and increasing progressiveness of pitch along at least a portion of increasing radii from the axis of rotation to the...
5226783 Axial flow fan with centrifugal elements  
An axial flow fan has each of its fan blades provided with an integrally formed centrifugal element which extends substantially parallel to an imaginary plane containing a central axis of the fan....
5226804 Propeller blade configuration  
A propeller type runner is described in which the leading edge of each blade "leans" forward from the root in the direction of rotation to reduce cavitation and increase efficiency. The "lean"...
5221188 Blade device for turbo-engines  
A blade device for turbo-engines, comprising a blade shell, a blade core and a blade base, has a blade core comprising a bundle of small tubes which provides the blade device with high stability...
5217349 System and method for suppressing noise produced by rotors  
Disclosed is a system and method for suppressing rotor noise by distributing mass and momentum sources and sinks on the rotor blade. A source is located on the blade, and therefore has the...
5215831 Ductility Ni-Al intermetallic compounds microalloyed with iron  
A beta phase nickel aluminide microalloyed with iron having improved ductility. Nickel aluminide intermetallics alloyed with no more than about 0.5 atomic percent iron have significantly improved...
5215441 Air conditioner with condensate slinging fan  
An air conditioning system having a fan that moves air over the outside heat exchanger of the system. The fan is of the bladed axial flow type. A winglet projects curvilinearly both radially...
5211924 Method and apparatus for increasing conversion efficiency and reducing power costs for oxidation of an aromatic alkyl to an aromatic carboxylic acid  
Improved mixing performance with reduced power input is obtained in an agitated oxidation reactor for converting an aromatic alkyl to the corresponding aromatic carboxylic acid by decreasing the...
5209643 Tapered propeller blade design  
An aircraft propeller blade utilized in subsonic flight at relatively slow turning applications with relatively high power coefficients. The blade in plan form is tapered at both ends with the...
5209642 Modified optimum pitch propeller  
An asymmetric set of pre-swirl vanes (stators) and a specially matched propeller for use on an inclined shaft. The propeller is designed by considering the mutual interaction of the propeller on...
5209608 Air grain conveyor system  
An air grain conveyor comprising a means for generating high velocity air, a grain ejection section, a connection between said means and said ejector section whereby the high velocity air is...
5207558 Thermally actuated vane flow control  
Thermally actuated flow diverters for gas turbine engines are provided which include an arrangement of vanes in spaced overlapping array, which direct, e.g. coolant air flow to rotating engine...
5193608 Radiator with fan for motor vehicles  
A radiator with a fan is arranged at a forward tilt under the footrest floor part of a cab floor of a cab-over-engine vehicle. The fan confronts the front of the engine. The fan is connected with...
5188508 Compact fan and impeller  
A compact centrifugal fan that draws air in past the impeller hub, which encloses a motor and which spins about a central axis, and then urges the air through a bend in the fluid passageway. As...
5184938 Axial fan with a cylindrical outer housing  
The invention relates to an axial fan with an essentially cylindrical outer housing and with a fan wheel which rotates therein and the hub of which is located on the rotor of an electric drive...
5181830 Blade for axial flow fan  
An axial flow fan blade (11) having an enhanced tip (12, 12') to reduce or eliminate tip vortices and therefore vortex induced noise. The enhancement is a rounded body extending from the blade tip...
5178517 Turbine bucket rotor construction  
A rotor for an air motor is constructed with a central, milled, aluminum disc having a peripheral flange to which is integrally molded an outer ring of epoxy compound or a composite material, the...
5174721 Helicopter rotor blades  
Flow separation behind the notch region of a swept tip of a helicopter rotor blade is reduced by features of the geometry and aerodynamic characteristics of the notch region itself. In particular...
5165881 Rotor for a screw rotor machine  
A rotor for a screw rotor machine, which rotor comprises a metal shaft (3, 13) and a rotor body (1) of plastics material moulded on the shaft, which is provided with a number of radially extending...
5163813 Wind-driven energy conversion device  
A power-producing windmill is disclosed. A paddle assembly having a central axis is supported for rotation on a frame. Two spaced-apart lateral sides supports the central axis and forms a channel...
5161953 Aircraft propeller and blade element  
A propeller blade element which virtually eliminates stall conditions. The rotatably driven blade element employs a long straight extended sharp leading edge from hub to tip, without helix, to...
5161952 Dual-plane blade construction for horizontal axis wind turbine rotors  
Dual-plant blade construction for wind turbine rotors having a horizontal shaft having a rotor hub adapted to be mounted on the horizontal shaft and having a horizontal axis. First and second sets...
5158434 Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having a wide range of viscosities  
Impellers and impeller systems are described which enable liquids and liquid suspensions to be mixed and blended where the size of the impeller and the viscosity of the liquid may require...
RE34109 Propeller blade  
A propeller having blades, designed to achieve maximum thrust at lower static velocities in both forward and reverse pitch modes is disclosed. Each blade has a generous leading edge radius leading...
5154574 Gearless air motor  
A gearless air motor utilizes a high speed rotor having turbine buckets defined in epoxy rather than metal to substantially avoid the danger inherent in high speed rotor fragmentation. The unit...
5153371 Ribbon stabilizer for a weapon  
A weapon arranged to travel in a given orientation when in flight, has a body and a ribbon. The body has a payload casing and a spindle rotatably mounted at the rear of the payload casing. The...
5147187 Blood pump and extracorporeal blood circulating apparatus  
An extracorporeal blood pump which comprises a pump housing having a pump chamber defined therein, and a rotary vane assembly accommodated within the pump chamber and including a substantially...
5147181 Hydrodynamic retarder  
A hydrodynamic retarder has a stationary element and a rotary element, each of which has a semi-toroidal cavity with a plurality of blade members disposed therein. The semi-toroidal cavities are...
5145333 Fluid motor driven blood pump  
A rotary blood pump includes an impeller in a pump chamber driven by a fluid motor. In a first preferred embodiment, the fluid motor includes a rotary member having a series of cupped fluid...
5137427 Quiet tail rotor  
A quiet tail rotor (QTR) blade for helicopters that provides reduced noise levels and increased thrust efficiency. The QTR blade includes a first segment for connecting the QTR blade to a...
5131815 Rotor blade of axial-flow machines  
The known rotor blade for use with axial-flow machines is improved. The improvement resides in a novel configuration of the blade body of the rotor blade. A leading edge of a tip end portion of...
5118257 Boot attachment for composite turbine blade, turbine blade and method of making turbine blade  
A root attachment for a turbine blade is integrally molded with a composite turbine blade for a ram air turbine. The root attachment includes an insert at the one end of the root attachment for...
5102301 Variable pitch propeller blades, hub and drive and adjusting mechanism therefor  
Stern drive propulsion systems for boats in which there is at least one prime mover (outboard or inboard motor) and a power train for rotating at least one propeller in the water to propel the...
5074753 Rotor blade  
A composite rotor blade comprising an outboard portion defining an airfoil surface, an inboard portion defining an end tang having a mounting section and an extension lug section. The mounting...
5045246 Suction device  
A novel turbine is described which consists of a disc or a shaft, to the upper and lower sides of which blades are attached, the blades on the upper side being at least three times larger than...