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| Number | Title | Issue Date |
| 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 |
| 7305762 | Method for production of a rotor of a centrifugal compressor An improved method for production of a rotor (10) of a centrifugal compressor, wherein the rotor (10) is produced from a monolithic disc; this disc is worked in a radial direction by at least one tool (20) of a numerical control machine, such as... | 12/11/2007 |
| 7273352 | Inlet partial blades for structural integrity and performance Methods and apparatus for conveying fluids (e.g., liquids, gases, and mixtures thereof) are disclosed. A turbopump in accordance with an exemplary implementation of the present invention comprises an impeller defining at least one flow channel and a shroud defining ... | 09/25/2007 |
| 7264446 | Centrifugal-fan impeller, and method of its manufacture A tiny-diameter, lengthwise extensive impeller utilized in an ultra-small centrifugal fan is molded by an injection molding operation. In order to avert difficulties attendant on injection-molding ultra-miniature parts, the thickness and length of a reinforcing ring... | 09/04/2007 |
| 7214033 | Blower fan A blower fan includes a shroud, a hub for guiding airflow being discharged, and a plurality of blades disposed between the shroud and the hub. A first outer diameter of a first portion, which is close to the hub, of the blade is different from a second outer diamete... | 05/08/2007 |
| 7192254 | Radial fan having axial fan blade configuration The present invention is a radial fan having an axial fan blade configuration. The present invention comprises a hub; a first set of blades around the hub; and a second set of blades on the extending part. Therein, the hub comprises a hollow at the center, an axle, ... | 03/20/2007 |
| 7179057 | Velocity profile impeller vane In accordance with the present invention, an impeller for use in a centrifugal pump has at least one vane the radially outer terminal end of which is configured to produce a flow velocity profile that controls and reduces the wear caused by slurry fluid being expell... | 02/20/2007 |
| 7156612 | Spigot arrangement for a split impeller A spigot arrangement for split impeller (inducer and exducer) includes a recess of the exducer and means for reducing exducer blade root stresses and localized contact stresses between inducer and exducer. ... | 01/02/2007 |
| 7108482 | Centrifugal blower The present invention provides a centrifugal fan including a hub adapted for rotation about a central axis and a plurality of blades arranged about the central axis and coupled for rotation with the hub. Each of the blades includes a curvature in a plane that extend... | 09/19/2006 |
| 6677564 | Blower apparatus A blower apparatus which is used inside an Over-The-Range (OTR) microwave oven and the like, includes a centrifugal fan, a bracket which is fixed and combined with a side of the driving unit and a fan housing having a suction port which rotably accommodat... | 01/13/2004 |
| 6629818 | Impeller for use with portable blower/vacuums An impeller for generating an air flow, for use in a device such as a blower/vacuum, the impeller having a hub structure for mounting the impeller on a rotatable shaft of the blower/vac and a plurality of air-flow generating vanes coupled to the hub struc... | 10/07/2003 |
| 6609300 | Pump impeller and method A pump impeller which is modified so as to achieve selected operating performance parameters. The impeller includes a front shroud and a rear shroud, the shrouds being spaced apart so as to form a plurality of passageways therebetween which are separated ... | 08/26/2003 |
| 6539605 | Method of making a support structure A support structure includes first and second support members which are interlocked with a body. The second support member is placed in a die such that a hole of the second support member is located at a predetermined position and the body is placed on th... | 04/01/2003 |
| 6508627 | Airfoil blade and method for its manufacture This centrifugal blower fan wheel has extruded-aluminum airfoil blades. The preferred blades have two hollow regions, separated by an angled mid-load support beam, inside the blade. The nose section of the blade (at the leading edge) and the tail section ... | 01/21/2003 |
| 6457940 | Molten metal pump An impeller for a molten metal pump includes an exterior bearing mounting surface that is trued about the axis of the impeller and drive shaft assembly. Another impeller arrangement includes a pumping chamber having an axis offset from the impeller axis t... | 10/01/2002 |
| 6416285 | Process for manufacturing an impeller A method for producing a rotor of a fan, which has support disks and lamellae which each have a curved cross-sectional profile, is proposed. The method is distinguished by the fact that firstly the lamellae are pushed axially into receiving openings in th... | 07/09/2002 |
| 6050772 | Method for designing a multiblade radial fan and a multiblade radial fan Specifications of the impeller and the scroll type casing of a multiblade radial fan comprising an impeller having numerous radially directed blades circumferentially spaced from each other and a scroll type casing accommodating the impeller are determine... | 04/18/2000 |
| 5925960 | Electric motor An electric motor comprises a stator having a plurality of conductive windings radially spaced about a central axis. The motor includes a rotor located radially inward of the stator and rotationally fixed with respect to a shaft disposed along the central... | 07/20/1999 |
| 5873164 | Method for manufacturing a fan wheel A fan wheel for high-temperature operation, especially in ovens, includes a star-like or ray-like base plate having a central middle region, protrusions protruding substantially radially beyond the central middle region and having an outer contour, axiall... | 02/23/1999 |
| 5158432 | Centrifugal blower housing and methods of fabrication The scroll wrap portion of a centrifugal blower housing is joined to the opposite scroll side portions thereof using uniquely configured double tab locking joints spaced apart around the peripheries of the scroll side portions. To form the joints, spaced ... | 10/27/1992 |
| 5075964 | Method of making a cooling fan rotor for a rotating electrical machine in particular for an alternator for an automotive vehicle A cooling fan rotor for a rotating electrical machine such as an alternator for an automotive vehicle, has n ventilating blades. The rotor is made by a method including the following steps: an elongated metal strip is formed; the metal strip is formed with 2n ... | 12/31/1991 |
| 5013215 | Blowers for freezer system and methods of installation thereof A centrifugal blower assembly of the type having a finned barrel portion to be driven by a shaft by rotation about a longitudinal axis of rotation has the barrel portion divided longitudinally to provide two separable halves. A central hub assembly for se... | 05/07/1991 |
| 4958987 | Materials handling fan impeller An impeller for a materials handling fan can be made in several different diameters utilizing a single central hub of fixed diameter. The single central hub is designed to withstand the varying stresses imposed by different impeller diameters. A circular ... | 09/25/1990 |
| 4850802 | Composite compressor wheel for turbochargers A composite compressor wheel for turbochargers and the like comprises a cast shell having aerodynamically contoured centrifugal impeller blades and a hub section defining a generally conical recess into which a hub insert of noncast material resistant to ... | 07/25/1989 |
| 4817856 | Method for coating a pump impeller A pump impeller is coated essentially without use of core structures. The pump impeller coating is performed in several stages. Partial units of the impeller are coated, whereafter the coated partial units are assembled together. Exposed areas of the impe... | 04/04/1989 |
| 4787818 | Centrifugal blower assembly A centrifugal blower assembly is provided which includes an improved blower housing construction wherein a pair of end panels each define a plurality of apertures disposed along a line corresponding to the profile of a blower spiral. An elongated scroll m... | 11/29/1988 |
| 4775270 | Impeller of centrifugal fluid-type rotary machine and manufacturing method thereof An impeller of a centrifugal fluid-type rotary machine includes impeller blades each having a concave and convex surface of which the shape is formed of parallel generatrices inclined with respect to a rotary shaft by an angle defined for each impeller bl... | 10/04/1988 |
| 4738593 | Centrifugal blower wheel A centrifugal blower wheel consisting of a wire hoop, a disk member and a plurality of separate blower blades arranged about the periphery of the wheel are operatively connected to the hoop and the disk member by a flange formed on each end of the blades.... | 04/19/1988 |
| 4669164 | Method and apparatus for the manufacture of variable dimension fans Construction of impellers of various dimensions are manufactured from tubular hub stock and sheet-like blade stock by cutting a hub of particular length from said hub stock and blades of corresponding length from said blade stock and attaching said blades... | 06/02/1987 |
| 4603773 | Apparatus for assembling blower wheel blades Automatic apparatus for assembling elongated, transversely curved blades in a fixture for holding the blades in a predetermined spaced relationship corresponding to the blade spacing in a centrifugal blower wheel. A first transfer assembly transfers indiv... | 08/05/1986 |
| 4595349 | Supercharger rotor, shaft, and gear arrangement An improved supercharger (10) of the Roots-type. The supercharger includes a three-piece housing assembly (14, 16, 18) defining generally cylindrical chambers containing two rotors (20, 22) having meshed lobes (20c, 22c) of modified involute profile which... | 06/17/1986 |
| 4563801 | Method of reinforcing the edges of impeller vanes or the like The inlet and/or outlet edge of a blank which is to be converted into the vane of an impeller for use in a centrifugal pump is reinforced by providing an exposed surface of the blank with a pair of contiguous recesses which extend along the edge and the d... | 01/14/1986 |
| 4522558 | Blower wheel apparatus Blower wheel apparatus for squirrel cage type blowers includes flexible hubs with integral collars for fastening the blower wheel onto a rotating shaft so that the hubs and collars may be moved inwardly for inserting the blower wheel into a housing and th... | 06/11/1985 |
| 4520541 | Method for producing profiled product having fins Disclosed is a method of producing a profiled product having fins such as an impeller having vanes which cannot be formed directly by casting a preliminary product having fins of the desired shape, a concave filled out portion being provided at one side o... | 06/04/1985 |
| 4483660 | Submersible pump impeller locking method A method of installing the diffusers and impellers on a shaft of a centrifugal pump uses a latent locking member. The locking member is positioned within a counterbore of each impeller when the impellers are placed on the shaft between each diffuser. Afte... | 11/20/1984 |
| 4435126 | Centrifugal pump impeller with replaceable wear ring A centrifugal pump impeller, particularly for use in pumps for effecting forced circulation of contaminated fluids in the primary circuits of nuclear reactor plants, has an impeller body which is surrounded by a cylindrical wear ring. The wear ring has an... | 03/06/1984 |
| 4428717 | Composite centrifugal impeller for slurry pumps A highly wear-resistant impeller for centrifugal pumps of composite construction comprising a base and a cover plate formed of material which can be worked with relative ease and an insert sandwiched between said base and cover plate formed of high temper... | 01/31/1984 |
| 4425081 | Centrifugal pump with dismountable diffuser A diffuser having at least three parts separable and couplable along coupling surfaces passing through the whole of its body between its inner and outer surfaces and between its coupling end with the suction pipe and its opposite end. Each of the parts of... | 01/10/1984 |
| 4363601 | Impeller in a centrifugal blower Disclosed is a centrifugal-blower impeller made from a back plate and a front plate and blades attached between these plates. The back plate or the front plate of the impeller or both of them are prestressed in a direction opposite to the stresses produce... | 12/14/1982 |
| 4329118 | Centrifugal blower wheels A line of forwardly curved blower wheels of different diameters incorporates blades of the same angular extent in all wheels but with the radii of curvature of the individual blades proportional to the diameter of the wheel wherein they are incorporated. ... | 05/11/1982 |
