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 |
| 4466201 | Method and an arrangement for storing organic fibrous material in a stack A method of and apparatus for drying stored fibrous materials is disclosed. Dry air is injected into a stack of fibrous materials via delivery tube means, and air is withdrawn from the stack via suction tube means. The air withdrawn is then treated so as ... | 08/21/1984 |
| 4413383 | Buckles for harnesses A buckle for a safety harness consists of two identical parts. Each part comprises a plate 10 having a D-shaped aperture 12 in one end, for receiving a harness, and a portion 14 at the other end folded at right angles to the rest of the plate 10 along an ... | 11/08/1983 |
| 4387941 | Work place arrangement A work place arrangement particularly adapted for laboratory work is described. The work place arrangement comprises a workbench including at least one attached board, at least one drawer, at least one arm rest, at least one working instrument or work too... | 06/14/1983 |
| 4374478 | Storage tanks for liquids The invention relates to tanks for the storage of liquid and has particular application to the land storage of liquefied gas at low temperature at or above atmospheric pressure. Thus, the invention provides a storage tank of the kind in which the walls ar... | 02/22/1983 |
| 4374041 | Testing reagent A reagent composition particularly adapted for use in treating organic samples suspected of containing chemically-bound heavy metals preparatory to electrically detecting and measuring the heavy metal content of the samples. The composition includes an el... | 02/15/1983 |
| 4369987 | Folding wheeled chair/luggage carrier The invention relates to a folding wheeled chair/luggage carrier of the kind having a pair of side frames which can be folded between an erected, spaced side-by-side position and a stowage position via releasable locking means, and thereafter collapsed fa... | 01/25/1983 |
| 4362227 | Clutches and brakes A clutch or brake assembly in which a hub and reaction member are, in the operative condition of the clutch or brake, coupled together through coupling discs, has one or a plurality of first coupling discs restrained against rotation relative to the react... | 12/07/1982 |
| 4357978 | Roller shade seal system A simple, relatively low cost system for sealing an ordinary roller shade with respect to the window frame sides, top and bottom is provided. The roller shade seal system essentially comprises a pair of edge seal assemblies in the form of elongate mountin... | 11/09/1982 |
| 4357750 | Jumper cable An electrical jumper cable comprising a plurality of spaced metallic conductors is formed from a rigid metallic sheet by selectively reducing the sheet in cross-section so as to define conductor patterns and integral terminal ends, and to render flexible ... | 11/09/1982 |
| 4352309 | Trimming and/or fin cutting tools with interchangeable cutting edges The present disclosure relates to a trimming and/or fin cutting tool for removing ridges, burrs and casting seams of the kind having interchangeable cutting edges, preferably made of hard metal, in which one or more cutting lines of the tool is or are for... | 10/05/1982 |
| 4350755 | Auger microlithography Relatively monochromatic soft X-rays at 4.5 mμ is used to induce auger electrons from the silver-halide crystal to sensitize the photosensitive grain, and the exposed crystal is developed into a fine silver grain. The pattern of the silver grains with si... | 09/21/1982 |
| 4342930 | Step-by-step miniature motor for watch movement The present invention concerns a miniature stepping motor 10 for a watch movement comprising a rotor 12 and a stator 11 pierced with a circular opening in which the rotor is located. A reinforcing band 18 surrounds the rotor concentrically and is pressed ... | 08/03/1982 |
| 4341005 | Manufacture of hollow fiber fluid fractionating cells Hollow fiber fluid fractionation cells such as used in artificial kidney machines are manufactured by placing a series of half sections of the longitudinal walls of the cell on the periphery of a winding wheel; winding fluid-filled permeable hollow fibers... | 07/27/1982 |
| 4337861 | Bingo card box An adjustable card box to hold a multiplicity of the slide-type bingo cards in an upright viewing position and in a manner such that they can be rapidly flipped through comprises two trays, one of which fits and telescopes within the other. A finger-opera... | 07/06/1982 |
| 4335918 | Vehicle safety seat In a safety seat installation in a vehicle such as a bus or coach, where the seat is one of a longitudinal row of similar forward facing seats, the back is constructed in two portions 4 and 5 which are pivotally mounted at 3 and 6 respectively. In the eve... | 06/22/1982 |
| 4321975 | Slurry diverter A slurry diverter for use in well drilling of the type having a canister surrounding the drill shaft containing at least one compression ring member adapted to surround the drill shaft, having an O-ring-like outer portion and a thinner inwardly protruding... | 03/30/1982 |
| 4317036 | Scanning X-ray microscope A scanning X-ray microscope including an X-ray source capable of emitting a beam of X-rays, a collimator positioned to receive the beam of X-rays and, to collimate this beam, a focusing cone means to focus the beam of X-rays, directed by the collimator, o... | 02/23/1982 |
| 4316146 | Method and device for measuring and detecting a change in the mechanical state of a body A method and device are described for measuring a change in the mechanical state aiming at detecting the disturbance the change in state has on a magnetic flux ($c;). This flux is brought to flow through at least a part of the body (1) under the influe... | 02/16/1982 |
| 4309895 | Arrangement for straightening damaged vehicle bodies The invention relates to arrangements for straightening damaged vehicle bodies by means of straightening devices which pull and/or press, which is of the kind having a transportable alignment bar equipped with retractable wheels, said alignment bar during... | 01/12/1982 |
| 4310395 | Process for electrolytic recovery of nickel from solution The present invention provides a method for electrolytically recovering or inning pure metallic nickel from nickel sulfate-containing solution using an electrolysis cell having nickel electrodes. The cell has at least one anode space, at least one cathode ... | 01/12/1982 |
| 4308301 | Process for metal-coating plastic surfaces A process for metal-coating plastic surfaces by chemical pretreatment with n acid pickling agent whereby to prepare the plastic surfaces for the subsequent superposition thereon of a metal layer is described. The plastic surfaces to be coated are chemicall... | 12/29/1981 |
| 4301576 | Tongue and buckle fastener for a safety belt harness A tongue and buckle fastener for a safety belt harness has a tongue 1 with a radiused head portion 3 shaped to mate with a recess 8 in an ejector 17. A latch plate 20 moves at right angles to the direction of insertion of the tongue 1 to engage behind the... | 11/24/1981 |
| 4298014 | Hair processing shield A hair processing shield to assist tinting, coloring and bleaching comprises a cylinder or tube of a clear polyolefin film. The tube is sized to fit over the head and cover the hair. The tube has longitudinal lines of perforations that are torn apart to f... | 11/03/1981 |
| 4295184 | Circuit board with self-locking terminals The present invention provides an apertured circuit board having self-locking terminals which partially cover at least some of the apertures. The terminals, which are integral extensions of the circuit pathways, each include a pair of inwardly disposed ge... | 10/13/1981 |
| 4288303 | Electrochemical processing system An electrochemical processing system is provided. The system comprises an electrochemical cell having a first compartment adapted to contain a first solution, a first counter electrode and a first reference electrode in contact with the first solution, a ... | 09/08/1981 |
| 4270639 | Synchronizing arrangement for a motor vehicle gear box The invention relates to a synchronizing arrangement for a motor vehicle gear box, comprising at least one synchronizing hub disposed locationally fixed in the longitudinal direction on a shaft, which hub co-acts via external teeth with internal teeth on ... | 06/02/1981 |
| 4270612 | Method for preventing the spontaneous combustion of stored organic and inorganic substances Apparatus and method for preventing the spontaneous combustion of a stack of stored organic and inorganic substances by injecting a control medium into selected areas of the stack. The apparatus comprises a source of a control medium such as air, steam, c... | 06/02/1981 |
| 4269870 | Solder flux and method Electrical and electronic components loosely mounted in a circuit board with their leads extending through holes in the board are temporarily stabilized in position in the board by treating the board and component leads at least in part with a selected ma... | 05/26/1981 |
| 4267753 | Apparatus for producing a blank from stock material The present invention relates to a method and apparatus for producing a smooth edge blank from stock material. A blanking die is carried by the movable die shoe and a closely cooperating blanking punch is secured on the fixed die shoe. Spring biassed mean... | 05/19/1981 |
| 4267817 | Wood-burning stove A wood stove is of all welded steel plate construction except for the door which is of heavy cast iron. When the door is closed, the only source of combustion air is through an adjustable air inlet on the face of the door. The door is hollow and serves to... | 05/19/1981 |
| 4265333 | Portable fence stile A portable fence stile comprises in combination: (a) a U-shaped metal tubing of a sufficient strength to support a man and adapted to have the legs thereof placed over a fence in a generally vertical position, (b) a foot support on each of the legs a stepping ... | 05/05/1981 |
| 4262845 | Concrete slab structure for railway track A concrete slab structure for supporting railway track is itself resiliently supported on a base structure by a spring system comprising tubes secured against longitudinal movement in holes extending through the slab from its top surface to its bottom sur... | 04/21/1981 |
| 4254625 | Turbo charging systems The invention relates to super-charged combustion engines in which a compressor is arranged in the engine inlet system and driven by a turbine in the engine exhaust system, a duct is provided for by-passing the turbine to the exhaust outlet, and a valve i... | 03/10/1981 |
| 4253847 | Preparing sample for electrochemical testing system An electrochemical measuring system which effects, measures and sorts charge transfer reactions of selected substances in a sample solution is provided. The system includes a novel electrode which is adapted to measure simultaneously on at least two elect... | 03/03/1981 |
| 4251102 | Elevating roofs The invention relates to an elevating roof for use in conjunction with a vehicle having a substantially rectangular roof opening defining a pair of longitudinal edges and a pair of transverse edges, of the type comprising a rigid substantially rectangular... | 02/17/1981 |
| 4249409 | Bench aligner The invention relates to a straightening jig for vehicle bodies, particularly for the cabs of trucks, of the kind comprising a stand for fastening to a floor or other foundation, and being equipped with a number of bearing fixings in which a number of bea... | 02/10/1981 |
| 4248650 | Method and apparatus for forming an open mesh criss-cross yarn net A system for making self-supporting scrim is described. The apparatus includes a net forming means in which scrim yarns are arranged in overlapping pattern such as a criss-cross net; a net carrier and support for continuously advancing the criss-cross yar... | 02/03/1981 |