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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7981359 | Rotor and process for manufacturing the same A rotor comprising bonded magnet portions mainly composed of magnet powder and a binder, which are embedded in a soft magnetic portion mainly composed of soft magnetic powder and a binder, the rotor being produced by a compression-molding method, and the magnetic po... | 07/19/2011 |
| 7931856 | Method of manufacturing crankshaft bushing A method of forming a crankshaft bushing or similar component is provided. A compaction die is provided having an axial, generally cylindrical internal opening. An upper and a lower punch are provided with exterior surfaces corresponding to the internal opening of t... | 04/26/2011 |
| 7897103 | Method for making and using a rod assembly An elongated rod assembly is made by preparing a plurality of rods. Each rod is prepared by the steps of furnishing at least one nonmetallic precursor compound, thereafter chemically reducing the precursor compounds to produce the metallic material, and thereafter c... | 03/01/2011 |
| 7875237 | Method for manufacturing dental scaler tip using powder injection molding process, mold used therein and scaler tip manufactured by the same The invention relates to a method for manufacturing a dental scaler tip using a powder injection molding process, a mould, and a scaler tip that is excellent in shape-reliability and injects fluid to a front end thereof along a curved section of the tip. The method ... | 01/25/2011 |
| 7829015 | Formation of non-axial features in compacted powder metal components An apparatus and process for forming compacted powder metal parts having a non-axial undercut feature. An undercut die is located between the upper and the lower dies and contains a plurality of shaped punches aligned in a circular pattern. Each of the shaped punche... | 11/09/2010 |
| 7744812 | Dynamic consolidation of powders using a pulsed energy source A gas operated part forming die apparatus has compact high tonnage presses which are operated by high pressure gas generated within chambers and controlled to operate high pressure pistons and dies for compressing particulate material into dense formed parts. Combus... | 06/29/2010 |
| 7727462 | Method for meltless manufacturing of rod, and its use as a welding rod An article made of a metallic material having its constituent elements is made by furnishing at least one nonmetallic precursor compound, wherein all of the nonmetallic precursor compounds collectively include the constituent elements of the metallic material in the... | 06/01/2010 |
| 7582255 | Warm molding raw material powder and warm molding method A hydroxy fatty acid salt having an average particle diameter of from 5 μm to 100 μm with a composition of from 0.3 wt % to 2 wt %, and more preferably, from 0.5 wt % to 2 wt % is added to a raw material powder in powder metallurgy, and worm molding is performed. ... | 09/01/2009 |
| 7578964 | Powder injection molding composition and method of use A powder injection molding composition is disclosed. The composition comprises caprolactam and a plurality of particles, where that plurality of particles is selected from a metal powder, a metal hydride powder, a ceramic powder, a ferrite powder, and mixtures there... | 08/25/2009 |
| 7560068 | Method and apparatus for manufacturing a cutting insert A method for manufacturing a cutting insert green body having undercuts includes providing a die cavity formed in closed top and bottom dies; closing a bottom of the die cavity by a bottom punch accommodated in a punch tunnel formed in the bottom die; filling the di... | 07/14/2009 |
| 7560067 | Powder friction forming A method of forming dense articles from metal or metal alloy powders by friction forming. A self supporting shaped deposit of powder is formed on a substrate. Relative movement is established between the shaped deposit and a friction forming tool. The forming end of... | 07/14/2009 |
| 7470394 | Fabricating heating elements The present invention relates to a method and apparatus for producing heating elements in the form of tubes with a resistive heater therein, surrounded by refractory powder. A filling pipe is inserted into said tube, and powder is allowed to flow down said pipe. The... | 12/30/2008 |
| 7435306 | Method for preparing rivets from cryomilled aluminum alloys and rivets produced thereby High strength aluminum alloy rivets are provided in which the aluminum alloys exhibit high strength at atmospheric temperatures and maintain high strength and ductility at extremely low temperatures. The rivets are produced from an alloy which is made by blending ab... | 10/14/2008 |
| 7384596 | Method for producing a metallic article having a graded composition, without melting A method for preparing a metallic article made of metallic constituent elements includes furnishing a mixture of nonmetallic precursor compounds of the metallic constituent elements. The method further includes chemically reducing the mixture of nonmetallic precurso... | 06/10/2008 |
| 7371290 | Production method for permanent magnet and press device To avoid various problems caused by remnant magnetization and produce an anisotropic bonded magnet at a reduced cost, a method for producing an anisotropic bonded magnet by feeding a magnetic powder (such as an HDDR powder) into the cavity of a press machine and com... | 05/13/2008 |
| 7364803 | High density dual helical gear and method for manufacture thereof The present invention relates to a low cost technique for manufacturing dual helical gears, such as herringbone gears, from powder metals. The dual helical gears made by this technique are of high density (greater than 92% of theoretical density) and offer superior ... | 04/29/2008 |
| 7361239 | High-density metallic-glass-alloys, their composite derivatives and methods for making the same The invention includes a method for producing high-density composites of metallic glass alloy powders in combination with a refractory metal powder, and includes related methods for producing metallic glass alloys. The invention, in one aspect, employs a system of m... | 04/22/2008 |
| 7362015 | Apparatus and method for making an electrical component This invention relates to a transformer and more particularly, to a system and method for making a transformer utilizing dynamic magnetic compaction. A coil is placed in a conductive container, and a conductive powder material, such as ferrite, is placed in the cont... | 04/22/2008 |
| 7361301 | System and method for consolidating powders This invention relates to a system and method for consolidating particulate material, such as particulate material, in order to achieve at least ninety-five percent (95%) or even ninety-eight percent (98%) of its maximum theoretical density using a relatively long d... | 04/22/2008 |
| 7342775 | Fluted anode with minimal density gradients and capacitor comprising same An anode with an anode body with a first side and a second side opposite to said first side, multiple anode wires and a conductive polymer cathode. ... | 03/11/2008 |
| 7332123 | Method for manufacturing composite articles and the articles obtained therefrom A method of molding an article comprises inserting a mandrel into the cavity of the mold; placing a niobium based refractory metal intermetallic composite powder into a cavity of a mold; consolidating the niobium based refractory metal intermetallic composite around... | 02/19/2008 |
| 7313861 | Electric drive for a shaping die A driving mechanism for operating a shaping die to join stacked plates by a deep-drawing and swaging operation is implemented as an electric drive, such as a linear motor or a rotary motor, which is operatively connected to the shaping die. ... | 01/01/2008 |
| 7309374 | Diffusion bonded nickel-copper powder metallurgy powder In contrast to current industrial practice where alloying powders are added to starting powder metallurgy compositions either as powder mixtures or fully prealloyed powders, the present invention posits a diffusion bonded nickel-copper precursor additive mixture for... | 12/18/2007 |
| 7297310 | Manufacturing method for aluminum matrix nanocomposite A simple method to produce Aluminum Metal Matrix Nanocomposite with 2 to 35 volume percent of nano Al2O3 reinforcement phase without adding nano Al2O3 particles in a direct step of the metal matrix. The initial necessary m... | 11/20/2007 |
| 7290588 | Protective gas device for pressure die-casting machines A protective gas device for the melting furnaces of pressure die-casting machines, in particular for processing a magnesium melt. A collection container of a mixing device for the components of a protective gas, which covers the melt to prevent oxidation or other da... | 11/06/2007 |
| 7278353 | Reactive shaped charges and thermal spray methods of making same Shaped charge liners are made of reactive materials formed by thermal spray techniques. The thermally sprayed reactive shaped charge materials have low porosity and high structural integrity. Upon detonation, the reactive materials of the shaped charge liner undergo... | 10/09/2007 |
| 7261759 | Powder metal mixture including micronized starch A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch par... | 08/28/2007 |
| 7258720 | Metal powder composition for use in selective laser sintering A three-dimensional object of a desired shape is made by irradiating an optical beam on a metal powder layer to form a sintered layer and by laminating such sintered layer one above another. A metal powder composition for use in making such a three-dimensional objec... | 08/21/2007 |
| 7240619 | Identifiable bullet which is unduplicatable This invention is intended to provide an identifiable bullet which is unduplicatable by a third party. The means is to place plural (two or more) kinds of identification codes onto or into a bullet and to make the identification codes mutually related. By thi... | 07/10/2007 |
| 7238220 | Iron-based powder The invention concerns a powder composition including an iron or iron based powder and a lubricating amount of an alkylalkoxy or polyetheralkoxy silane, wherein the alkyl or polyether group has between 8 and 30 carbon atoms and the alkoxi group includes 1-3 carbon a... | 07/03/2007 |
| 7235201 | Split die and method for production of compacted powder metal parts A device to compact parts out of powder material including a top die and a bottom die movable with respect to each other from an open position to a closed position, at least one punch associated with each of said dies for relative movement between the die and associ... | 06/26/2007 |
| 7211217 | Process for the manufacture of compacts in a powder press A process for the manufacture of compacts, particularly cemented-carbide cutting blades, by compressing metallic powder and subsequently sintering the compacts wherein the compacts are formed in a powder press having a die-plate, an upper ram and at least one lower ... | 05/01/2007 |
| 7175685 | Dry conversion of high purity ultrafine silicon powder to densified pellet form for silicon melting applications A bulk silicon material for making silicon ingots, consisting of silicon pellets, and a method for making the pellets from an agglomerate-free source of high purity silicon powder by feeding a controlled amount of silicon powder that is free of intentional additives... | 02/13/2007 |
| 7160502 | Method for producing anode for rechargeable battery The present invention relates to a method for readily producing an anode for rechargeable batteries having conflicting properties in good balance, including the corrosion resistance and the activities such as the initial activity and the high rate discharge performa... | 01/09/2007 |
| 7150851 | Powder press An apparatus for pressing a mass into a coherent workpiece has a mold body defining a chamber and a mold liner in the chamber having a generally cylindrical pressing surface centered on an axis, directed in one radial direction, and defining a mold cavity and an opp... | 12/19/2006 |
| 7147820 | Method and apparatus for minimizing the spread of maximum compression forces in a powder press A method for minimizing the spread of the maximum compression forces in compacting powder, specifically metallic powder, by means of a powder press which has a die-plate, an upper ram, and at least one lower ram which are associated with a die-bore and are respectiv... | 12/12/2006 |
| 7148598 | Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw... | 12/12/2006 |
| 7140269 | Gear wheel with a multiple helical toothing, pressed in one part, and a method and device for manufacturing the same A gear wheel includes multiple helical toothings, each having a different helical angle. A pressing method for molding a gear wheel involves introducing a compactable material into a chamber of a pressing tool, compacting the material, exposing the helical toothings... | 11/28/2006 |
| 7135053 | Brittle formed product and iron-based power material and method for manufacturing these materials Cotton-like aggregates (B) including grinding chips from an iron-based metal and a grinding fluid containing oil and water are compression molded for forming a brittle compact (C) having the fibrous grinding chips roughly sheared and excessive water and oil removed ... | 11/14/2006 |
| 7135141 | Method of manufacturing a sintered body A method of manufacturing a sintered body, in which a material powder composed of metallic powder or alloy powder, a getter material having a higher oxidation potential than that of the material powder, and a hydride, which constitutes a hydrogen source, are sealed ... | 11/14/2006 |
