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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 |
| 4746143 | Vibration control apparatus for vehicles A vibration control apparatus for vehicles to be installed on the vehicle wherein a vehicle body is supported on a truck through springs and damping mechanisms, for suppressing the vibrations of the vehicle body and enhancing the riding quality of the veh... | 05/24/1988 |
| 4652495 | Resilient coat for tie of direct-connection type track A resilient coat for a direct connection-type tie (Danchoku tie) which is composed of a concrete tie body and a microcellular polyurethane elastomer coating layer which adheres to and coats the lower portion of the tie body to form an integral body therew... | 03/24/1987 |
| 4648224 | Tendon for prestressed concrete A tendon for prestressed concrete wherein inorganic particles are coated on an outer surface of a rod made of fiber reinforced plastic through a plastic adhesive layer. The inorganic particles are formed with minute rugged surface portions on the outer su... | 03/10/1987 |
| 4622664 | Channel control system for loop type signal transmission channel A channel control system for a scattered loop type information transmission channel has posts that are linked in a single loop and are served both ways by the same loop. Each post consists of an A-system working in one direction and a similar B-system wor... | 11/11/1986 |
| 4576324 | Gas pressure welding machine A gas pressure welding machine comprises a movable clamp means for clamping one of reinforcing rods to be joined together, a stationary clamp means for clamping the other reinforcing rod, a punching die for punching-shearing a bulge being formed around a ... | 03/18/1986 |
| 4557087 | Metallic sheath for a posttensioning method provided with rust proofing treatment A metallic sheath for a posttensioning method wherein an outer peripheral surface or outer and inner peripheral surfaces thereof is (or are) coated with phosphate layer (or layers) and plastic resin layer (or layers) thereupon and preferably further coate... | 12/10/1985 |
| 4556164 | Method of field welding head-hardened rails A method of field welding head-hardened rails which includes the steps of gas pressure welding the rails, shearing off excess metal therefrom at the welded portion with a portable welder device, subjecting the railhead of the pressure welded portion of th... | 12/03/1985 |
| 4520756 | Build-up spraying apparatus A build-up spraying apparatus is disclosed which is capable of positionally adjusting the spreading rate of build-up metal powder on an article along the spreading direction to satisfactorily carry out partial or local build-up as well as uniform build-up... | 06/04/1985 |
| 4468572 | Feeder voltage compensating apparatus for electric railway This invention serves to reduce the drop of feeder voltage in an electric railway, and relates to a feeder voltage compensating apparatus for electric railways wherein an accumulator and a thyristor rectifier are connected by a thyristor switch circuit wh... | 08/28/1984 |
| 4459668 | Automatic train control device An automatic train control device which has a detector for detecting whether a newly received train speed signal instruction is for instructing the train to run at a lower speed than that according to an earlier signal while the train is running at a spee... | 07/10/1984 |
| 4454389 | Lambda type direct suspending overhead contact system for electric railway A lambda type direct suspending overhead contact system for an electric railway including two or more pairs of anchor ears connected to a contact wire and outer and inner suspension wires held by a suspension clamp on a fixed beam at a ratio of a tensile ... | 06/12/1984 |
| 4436313 | Device for sealing a propeller shaft against invasion of sea water A sealing device for a ship's propeller shaft installed around the propeller shaft in which longitudinally spaced annular iron pole blocks, and circularly spaced permanent magnets fixed between the blocks are mounted in a cylindrical housing surrounding t... | 03/13/1984 |
| 4436179 | Noise control apparatus A noise control apparatus for reducing a sound volume of a noise propagating from a noise source such as a railroad includes a sound arresting wall placed apart from the noise source. Means for shifting in phase and refracting the acoustic wave of the noi... | 03/13/1984 |
| 4416158 | Punching-shearing method for inspecting quality of butt welded joint A punching-shearing method for inspecting the quality of a butt welded joint comprises pressure butt welding steel members under heat to form an annular bulge around the joint portion of the steel members, punching-shearing the bulge under red heat immedi... | 11/22/1983 |
| 4299173 | Levitation and guide mechanism for curved track in inductive repulsion type vehicle magnetic levitation and guide system An improvement in an inductive repulsion type vehicle magnetic levitation and guide system for a curved track in which the vehicle is levitated by an electromagnetic force generated between levitation conductors having the same time constant and laid in t... | 11/10/1981 |
| 4273054 | Vehicle vibration damping method in the induced repulsion type magnetically suspended railway vehicle In an induced repulsion type magnetic suspension system for a railway vehicle, superconductive magnets of opposite polarities are alternately set at specific intervals in the longitudinal direction of vehicle, while in the longitudinal direction of the tr... | 06/16/1981 |
| 4272003 | Butt welding and burr shearing machine for reinforce steel A butt welding and burr shearing machine for metal rod, e.g., reinforce steel has opposed relatively slidable clamping devices (8, 9), which has positioning clamp (10) and pivotable clamp lever to clamp the rod by lever action. One of the clamping devices... | 06/09/1981 |
| 4267085 | Injection materials for railroad track beds In a railroad track bed an injected layer is formed between the railroad ties and the roadbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a vi... | 05/12/1981 |
| 4230209 | Means of stringing trolley wires Means of stringing trolley wires comprises a supporting portion, resilient portions and a sliding portion. The supporting portion comprises a box member having an opening at the bottom thereof, and each of the resilient portions comprises a spring member ... | 10/28/1980 |
| 4181430 | Method and apparatus for optical method of measuring rail displacement For optically measuring rail displacement, a light projector with a slit plate, a reflection mirror for light projection, a reflection mirror for light reception and a light receptor with a slit plate are installed at specified distances from one another ... | 01/01/1980 |
| 4166509 | Process for excavating and constructing tunnel and excavating device A process for excavating and constructing a tunnel, and an excavating device are disclosed. This process is directed to excavating and constructing a tunnel under a railway or a road on a banking or on level land in the direction transverse to the railway... | 09/04/1979 |
| 4156440 | Railroad track bed using injection materials and method therefor In a railroad track bed, an injection layer is formed between the railroad ties and the raodbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a ... | 05/29/1979 |
| 4146481 | Filter Disclosed herein is an improvement in a filter of the type having a plurality of filtering plates vertically spaced at fixed intervals to interpose filtering spaces therebetween and as many scrapers laid outwardly from the axis of the stack of filtering p... | 03/27/1979 |
| 4139320 | Process for excavating and constructing tunnel and excavating device A process for excavating and constructing a tunnel, and an excavating device are disclosed. This process is directed to excavating and constructing a tunnel under a railway or a road on a bank or on level land in the direction transverse to the railway or... | 02/13/1979 |
| 4095764 | Spot control type automatic train stop system utilizing ground control units common to more than one block signal A spot control type automatic train stop system utilizing ground control units common to more than one block section signal. For at least one particular block section signal, one or more of the ground units positioned in a block section which precedes the... | 06/20/1978 |
| 4091462 | Control apparatus for mortar compounding apparatus In a mortar compounding apparatus wherein water, cement, aggregate and sand are admitted into a mixing tank at a predetermined ratio and admixed to form mortar, there is provided a control apparatus including detection blades rotated by a constant torque ... | 05/23/1978 |
| 4084981 | Quick hardening cement-asphalt composition A quick hardening cement-asphalt composition used as a grout for a ballast-filled track structure comprising (a) 100 parts by weight of a cement composition prepared by adding to portland cement about 10 to 50% by weight of a mixture of a calcium aluminat... | 04/18/1978 |
| 4060425 | Super rapid hardening mixture This invention relates to a super rapid hardening mixture comprising A. a super rapid hardening cement in which 11CaO.7Al2 O3. CaZ (X is a halogen atom), 3CaO.SiO2 and CaSO4 are present as indespensable components; B... | 11/29/1977 |
| 4052109 | Air brake system employing combined automatic and direct braking An air brake system for a vehicle includes both automatic braking and direct braking. The equipment for direct braking requires the installation of a main air reservoir pipe in the longitudinal direction of a train. A single pipe serves both as the brake ... | 10/04/1977 |
| 4039297 | Heat insulating particles The present invention relates to improved heat insulating particles with a high heat insulating effect and high mechanical strength. The particles are smooth cells formed around hollow or solid grains of a low heat-conducting material such as silica, alum... | 08/02/1977 |
| 4031990 | Set of current collecting elements used for a current collecting roller There is disclosed a set of current collecting elements used for a current collecting roller which feeds current to a transportation apparatus. The set of current collecting elements comprises a plurality of electroconductive elements arranged in juxtapos... | 06/28/1977 |
| 4013017 | Remote railway container locking system A system for issuing instructional signals to individual cars of a train for causing actuation of a device such as a container locking device of the individual car. A plurality of instructional signal lines and a plurality of feedback lines extend through... | 03/22/1977 |
| 4008093 | Control method and equipment for charging ready-mixed concrete additives batchwise A control method for charging ready-mixed concrete additives batchwise which aims at keeping the slump of ready-mixed concrete within a certain range and making longer transportation by truck mixer possible without degrading the quality, where the slump o... | 02/15/1977 |
| 3998437 | Equipment for charging ready-mixed concrete additives batchwise Equipment for charging ready-mixed concrete additives batchwise, which aims at keeping the slump of ready-mixed concrete within a certain range and making longer transportation by truck mixer possible without degrading the quality. The slump of ready-mixe... | 12/21/1976 |
| 3986222 | Shock control device for use in the construction of buildings such as bridges and the like There is described a control device particularly suitable for use in the construction of buildings such as continuous girder or truss bridges, elevated highways and the like, for the purpose of controlling vertically imposed loads, more particularly, for ... | 10/19/1976 |
| 3958701 | Load-shifting cargo transfer apparatus The present invention relates to a cargo transfer apparatus of load-shifting type. The load-shifting type cargo transfer apparatus according to the present invention consists of a stationary unit and a mobile unit. The stationary unit comprises a series o... | 05/25/1976 |
