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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 |
| 5866273 | Corrosion resistant RAM powder An iron-silicon compound powder whose predominant phases are Fe5 Si3, Fe2 Si and Fe3 Si, which is useful as a radar absorbing material (RAM) in corrosive and oxidizing atmospheres and when used with corrosive or... | 02/02/1999 |
| 5188905 | Coated steel sheets Disclosed are electro-plated steel sheets having a primer coating composed of 5 to 30% by weight of Cr, 0.005 to 5% by weight of cation polymer, with the balance being Zn, with or without a further Zn or Zn-alloy coating formed on the primer coating. The ... | 02/23/1993 |
| 5132278 | Superconducting composite article, and method of making the same A superconducting composite material comprising a superconducting element, coated on its exterior surface with noble or inert metal, in a conductive metal matrix which includes nonsuperconducting fibers. The superconducting element may suitably comprise a... | 07/21/1992 |
| 5132083 | Laser padding material and a laser padding method using the same A laser padding material in accordance with the present invention comprises copper as its main component and at least one, as other contained elements, selected from the group consisting of 1-5 weight % of nickel (Ni), 0.2-5 weight % of silicon (Si), less... | 07/21/1992 |
| 5122422 | Composite body made of graphite and high-melting metal A composite body for rotary anodes of X-ray tubes is made from graphite, a carbide-forming, high-melting metal component and a multi-layered intermediate layer. The first layer of the intermediate layer closest to the graphite is made up of a metal or an ... | 06/16/1992 |
| 5106699 | Apparatus for filling in an opening in a wall of a safe A simple cylindrical steel element, having a tapered portion at an insertion end and a plug of a difficult-to-machine material securely attached therein, is forcibly inserted into a previously formed hole, e.g., in a hard inner layer of a multilayer wall ... | 04/21/1992 |
| 5106434 | Method for producing a metal and ceramic heat-connected body In heat-connections between metal and ceramic, martensite stainless steel or martensite heat-resistant steel which can be hardened by quenching in a gas or vacuum after having been heated beyond the quench hardening temperature thereof are used as metal. ... | 04/21/1992 |
| 5104745 | Multifilament superconductor strand having an anti-diffusion barrier layer A multifilament superconducting strand for use at industrial frequencies and made from an initial billet comprising a superconducting core niobium-titanium alloy surrounded by an anti-diffusion barrier layer which is in turn surrounded by a copper based m... | 04/14/1992 |
| 5102621 | Ternary brazing alloy for carbon or graphite A ternary brazing alloy for carbon or graphite consisting essentially of 0.5-10 wt % titanium, 10 to 50 wt % tin, balance copper.... | 04/07/1992 |
| 5102746 | Multicoated steel sheet susceptible to cationic electrodeposition coating This invention provides an organic multicoated steel sheet susceptible to cationic electrodeposition coating which comprises a zinc or zinc alloy plated steel sheet and as a first layer provided on the surface of said plated steel sheet a sparely soluble ... | 04/07/1992 |
| 5100487 | As-cast, age-hardened Cu-Sn-Ni worm gearing and method of making same Worm gearing having improved wear and strength properties comprises a Cu, 8.0-13.0 w/o Sn, 3.5-5.0 w/o Ni alloy aged in the as-cast condition to strengthen the dendritic microstructural constituent (e.g., alpha phase) while retaining the as-cast, relative... | 03/31/1992 |
| 5100485 | Method for manufacturing permanent magnets A method for manufacturing permanent magnets from a plurality of thin flakes of a rare earth-Fe-B alloy metal, comprising the steps of subjecting the thin flakes to a discharge electric field, the thin flakes being comprised of an R-Fe-B alloy metal; and R-Fe-... | 03/31/1992 |
| 5100617 | Wires made of copper-based alloy compositions Metal filler compositions and methods of employing the same are disclosed, in which the compositions are copper base with the addition thereto of tin and silicon. For thermal spraying applications, aluminum is included in the formulation. By practice of t... | 03/31/1992 |
| 5100738 | Reinforced concrete containing coated steel reinforcing member The reinforcing steel has a protective coating formed from a first layer of synthetic material and a second layer of aluminum or aluminum alloy between the first layer and the outer surface of the reinforcing steel.... | 03/31/1992 |
| 5100867 | Process for manufacturing wire or strip from high temperature superconductors and the sheaths used for implementing the process In a known process, oxide powders derived from the four-component systems yttrium-barium-copper-oxygen or lanthanum-strontium-copper-oxygen are mixed, pressed, sintered, ground and then heat-treated to produce a superconducting material which can be shape... | 03/31/1992 |
| 5100488 | Third element additions to aluminum-titanium master alloys An improved aluminum-titanium master alloy is provided. Such alloy contains a small but effective amount of, in weight percent, carbon about 0.005 up to 0.05 titanium 2 to 15, and the balance aluminum. After melting, the master alloy is superheated to abo... | 03/31/1992 |
| 5098654 | Alloy based on copper, manganese and aluminum, and objects made of said alloy An alloy based on copper, manganese and aluminum, said alloy further containing iron and nickel, besides unavoidable impurities, with less than 7% by weight zinc and possible other metals, which alloy is formed of 10-55% by weight manganese, 4-10% by weig... | 03/24/1992 |
| 5098797 | Steel articles having protective duplex coatings and method of production A sacrificial metallic undercoat is provided between the surface of the gas turbine engine stainless steel compressor blade and a protective overcoat of ceramic material.... | 03/24/1992 |
| 5098487 | Copper alloys for shaped charge liners A metal liner for a shaped charge device having a ductile metal matrix and a discrete second phase is provided. The allow composition is selected so the second phase is molten when the liner is accelerated following detonation. The molten phase reduces th... | 03/24/1992 |
| 5096513 | Very thin soft magnetic alloy strips and magnetic core and electromagnetic apparatus made therefrom A thin Co-based amorphous alloy strip is produced, the conditions for production being controlled to those specified by the invention. The thin strip has an extremely small thickness and few pinholes. The extremely small thickness of less than 4.8 μm not... | 03/17/1992 |
| 5096785 | Mirror and method of manufacturing same A mirror comprises a transparent glass sheet having a reflective metal coating deposited on the glass and a protective coating applied to the reflective coating. The protective coating comprises a paint having a residual internal stress SR equa... | 03/17/1992 |
| 5092920 | Sintered body for high-accuracy working tools A sintered body for high-accuracy working tools is obtained by sintering powder mixture containing at least 45 percent by volume and not more than 60 percent by volume of cubic boron nitride powder having an average particle size of not more than 2 μm an... | 03/03/1992 |
| 5093207 | Laminate material or laminate workpiece with a functional layer, especially a friction bearing layer, disposed on a backing layer A laminate material of a laminate workpiece with a backing layer and a functional layer, in particular a friction bearing layer with the structure of a solid but fusible dispersion with a matrix and at least one component which is dispersed in the matrix ... | 03/03/1992 |
| 5093208 | Laminated metal sheet A laminated metal sheet, the metal sheet having adhered on at least one major surface thereof a film of a non-crystalline polyester, and a process for the preparation thereof. The laminated metal sheet is particularly useful for forming into drawn and wal... | 03/03/1992 |
| 5090997 | Process for producing powdered aluminum alloys In an advantageous process for producing powdered aluminium alloys which have a catalytic action or are capable of acting as precursors of catalysts, good results are obtained if the alloy is atomized with water and/or a gas at a temperature of 50° to 50... | 02/25/1992 |
| 5089057 | Method for treating copper-based alloys and articles produced therefrom Copper based alloys, e.g. CuNiSnSi are processed by annealing followed by a high level of cold work area reduction then a recrystallization step which is followed by a low level of cold work prior to spinodal aging. The resultant material is isotropically... | 02/18/1992 |
| 5087530 | Automatic bonding tape used in semiconductor device A TAB tape or tape-like carrier used for an automatic bonding process when manufacturing high-frequency semiconductor devices has a plurality of electrically conductive circuit patterns on a flexible insulative film having a plurality of holes located in ... | 02/11/1992 |
| 5085411 | Apparatus for processing grain-oriented electrical steel strip An apparatus for processing grain-oriented electrical steel strip has a groove-scribing unit, which comprises a groove-scribing roll mounted above a pressing roll, disposed on the entry side of an insulation coating unit. A bridle roll is provided above t... | 02/04/1992 |
| 5085690 | Preparation of iron whiskers Iron whiskers are produced by thermal decomposition of iron pentacarbonyl vapor in an indirectly heated empty-space decomposer in which the cross-sectional area for entry of the iron pentacarbonyl into the empty-space decomposer is from 10 to 40% of the c... | 02/04/1992 |
| 5080981 | Nickel-containing alloys as an adhesive layer bonding metal substrates to ceramics The invention relates to the use of alloys containing 50 to 70% by weight of nickel, 10 to 40% by weight of chromium, 3 to 10% by weight of aluminum, 4 to 10% by weight of titanium and 1 to 3% by weight of silicon, which alloys have a coefficient of thermal expansion &#... | 01/14/1992 |
| 5079100 | Wear resistant coatings for engine components and a process for producing such coatings Engine components of steel or superalloy subject to wear from alternating friction at medium temperatures in the region of 700° C. are provided with a protective wear-resistant coating by a) electrophoretic deposition of a metal-ceramic structure comprising a... | 01/07/1992 |
| 5079102 | Tool using gold as a binder A tool comprising a blank and shank, bonded at a low temperature through a bonding layer of gold formed by thermocompression bonding between the blank and shank is provided which can be used at a high temperature independently of the temperature at which ... | 01/07/1992 |
| 5079101 | Composite film The present invention relates to a composite film. More particularly, the present invention relates to a composite compound film and composite compound multilayered film, comprising a metal, an alloy and/or an inorganic substance with an organic substance... | 01/07/1992 |
| 5077140 | Coating systems for titanium oxidation protection Coatings that provide substantial oxidation protection for titanium substrates are comprised of a continuous coating of ductile MCrAl or ductile MCr alloys where M is at least one metal selected from the group consisting of iron, nickel, and cobalt. Ducti... | 12/31/1991 |
| 5076865 | Amorphous aluminum alloys An amorphous aluminum-valve metal alloy with special characteristics such as high corrosion resistance, high wear resistance and coinsiderable toughness, consisting of Al and at least one element selected from valve metals of Ti and Zr, a portion of the s... | 12/31/1991 |
| 5076863 | Joined body of ceramic member and metallic member, and process for joining ceramic member and metallic member A joined body of a ceramic member and a metallic member is used as tappets in internal-combustion engines, tools employing brazing etc., and is joined to each other through a layer of a brazing filler material, in which the brazing filler material has a s... | 12/31/1991 |
| 5076836 | Process for the preparation of ferromagnetic metallic particles for magnetic recording A process for the preparation of ferromagnetic metallic particles for magnetic recording which comprises (I) a step of preparing a slurry of acicular iron oxide hydrate containing nickel and, if necessary, manganese, (II) a step of coating the surface of the a... | 12/31/1991 |
| 5077138 | Fiber reinforced magnesium alloy A composite material having heat resistance at elevated temperatures and excellent mechanical properties to be used for parts of automotive vehicles, especially for pistons, machine parts or aerospace materials is composed of fiber reinforced magnesium al... | 12/31/1991 |
| 5074932 | Fine-crystalline iron-based alloy core for an interface transformer In an ISDN digital communications system, the transmission between the network termination and the terminal equipment ensues via what is referred to as the So interface, on the basis of interface transformers. Since the power supply of the term... | 12/24/1991 |
| 5074922 | Method of producing beryllium copper alloy member A beryllium copper alloy member is provided having both a high electrical conductivity of not less than 70% IACS and a high strength of not less than 70 kgf/mm2 by an extensively simplified production method which widely decreases the productio... | 12/24/1991 |
