Abstract: A pneumatic tire may include a tread, an inner tire surface positioned opposite the tread, and an internal heat exchanger attached to the inner tire surface. The wheel assembly may include a wheel rim, the pneumatic tire, and a pump. The pneumatic tire may be attached to the wheel rim. The pump may be attached to the wheel rim outside of the pneumatic tire and configured to rotate with the wheel rim. The pump may be coupled to the internal heat exchanger through an opening in the wheel rim. The wheel assembly may further include a coolant disposed in the internal heat exchanger and configured to absorb heat from the pneumatic tire. The wheel assembly may also include an external heat exchanger configured to remove heat from the coolant.

Abstract: A pneumatic tire includes a tread development width TDW in a tread portion and a tire maximum width SW which satisfy 0.70?TDW/SW?0.75. A profile line forming an outer surface of a sidewall portion in a tire meridian cross-section includes at least three arcs having mutually different radii of curvature. In the profile line, a radius of curvature R1 of an arc from a first point to a second point, a radius of curvature R2 of an arc from the second point to a tire maximum width position, and a radius of curvature R3 of an arc forming a portion on an inner side in the tire radial direction from the tire maximum width position satisfy R1>R2>R3. A height SDH in the tire radial direction from a bead heel to the tire maximum width position and a tire cross-sectional height SH satisfy 0.47?SDH/SH?0.50.

Abstract: A tire comprises a tread portion axially divided by circumferential grooves into a first middle land portion, a crown land portion and a second middle land portion. Each land portion has a profile protruding radially outwardly from a reference tread profile. The maximum protrusion amount of the second middle land portion's profile is larger than the maximum protrusion amount of the crown land portion's profile which is larger than the maximum protrusion amount of the first middle land portion's profile.

Abstract: A first belt cord made of organic fibers of a spirally wound belt layer extends at an angle of equal to or less than 5° relative to a tire equatorial plane, a second belt cord made of organic fibers of a zigzag belt layer extends at an inclination of an angle of 2° to 45° relative to the tire equatorial plane, to folding back points where the second belt cord is folded back at each width directional end edge of the zigzag belt layer, and a relation of N95>N50 is satisfied. N50 is the number of stacked belt layers of the spirally wound belt layers, at 50% of half the length of a maximum belt width of belt layers from the tire equatorial plane. N95 is the number of stacked belt layers of the spirally wound belt layers, at 95% of half the length of the maximum belt.

Abstract: A two-wheeled vehicle tire achieves a further improvement particularly in the traction performance during turning on soft ground. A two-wheeled vehicle tire includes a tread portion formed in an annular shape. The tread portion includes: center land portions arranged on a tire equator CL; middle land portions arranged on the tire width-direction outer side of the center land portions; and shoulder land portions arranged on the tire width-direction outer side of the middle land portions, and T-shaped or Y-shaped land portions each constituted by three partial land portions connected at one end are arranged between the center land portions and the shoulder land portions.

Abstract: An arrangement is proposed for controlled guidance of a wheel axle (22) or of a bogie of a rail vehicle passing over points, whereby the wheel contact point (48, 50) is subjected to a controlled influence such that the wheel axle runs substantially vertical to the track longitudinal axis. The controlled influence of the wheel contact point can be exerted by, for example, the stock rail (32) veering away outwards in the area that the blade begins.

Abstract: A continuous action track maintenance or rehabilitation machine comprises a first machine frame, a carrier frame arranged between the undercarriages supporting the first machine frame on the track, ballast tamping and track lifting and lining units vertically adjustably mounted on the carrier frame, and a drive linking the carrier frame to the first machine frame for longitudinally displacing the carrier frame with respect thereto. A second machine frame is linked to the rear end of the first machine frame, and a plow arrangement is vertically adjustably mounted on the second machine frame between the undercarriages thereof, the plow arrangement comprising a drive connecting the plow arrangement to the second machine frame for vertically adjusting the plow arrangement with respect thereto, a center plow for plowing ballast between the rails of the track, shoulder plows for plowing ballast laterally adjacent each one of the rails, and a drive for operating each one of the plows.

Abstract: A disc wheel, particularly for rail vehicles, with a composite metal/plastic structure. In order to make possible simple manufacture with at the same time adequate force transmission, a structure between the hub and the tread comprises a plastic structure comprising two half shells of the same design which are subdivided in sector fashion by spoke-like reinforcement ribs. The reinforcement ribs each have a longitudinal slot into which rib plates are inserted which connect the two half shells to each other. Advantageously, plastic foam is inserted into the cavities of the half shells. All joints between the plastic structure and the hub or the tread are cemented joints.

Abstract: A system and method for bracing and cushioning the impact of movable massive loads during sudden deceleration of a transport vehicle, such as created during humping of railway cars. Resilient elastomeric pads separate adjacent objects of the load with the thickness and density of the elastomeric material chosen to dampen typical impact forces without damage to the objects. The resilent pads are preferably formed with at least one face contoured to envelope the side of an object. Three types of resilient pads are disclosed for use in transporting massive sheet metal coils with one pad adapted for particular use at endwalls, another pad for use between coils, and yet another pad for use between mid-row coils and doorway dunnage.

Abstract: In a magnet-floating toy running inside a loop of vacuum-like state, a .perp. shape monorail is provided within a loop of air-tight, transparent round pipes, air within the loop is drawn by suction to make loop reach a vacuum-like state to reduce air resistance. In the two extended wings of the monorail and also underneath the surfaces of the car body, permanent magnets are installed and are arranged so that the magnet poles of the two magnets are the same to induce repulsion force and that when the car rides on the monorail, it may float. Power is supplied from source outside the loop to the conductive rail mounted in the top surface of the monorail and through the brush, then in turn, transmit to the motor. Thus motor will enable car to run within the loop.

Abstract: A traction wheel turn for a power and free conveyor employs a single rotary unit to effect a complete, 180.degree. reversal of the course of the conveyor. A circular track component forms a part of the free track at the inside of the turn and is carried by the traction wheel and rotates therewith. The inside wheels of the free trollies transfer from a standard, straight track section to the circular component at the turn, are carried thereby through the turn, and are delivered to the next stationary track section at the end of the turn. The horizontal space occupied by the turn is therefore, no greater than the diameter of the traction wheel.

Abstract: A railroad hopper car having bottom discharge doors, an elongated beam assembly along the bottom of the car, door operating levers to open and close the doors connected to the beam assembly and doors, and lost motion timing connections in the beam assembly which permits displacement of beam sections to open and close pairs or sets of doors in a sequential but substantially simultaneous and automatic order so ast to permit reduction of air pressure required to open the doors, or permit use of smaller diameter air cylinder, a pneumatic drive to move the beam in opposite directions to open and close the doors, and a secondary lock to maintain the beam stationary unless pneumatic pressure intentionally operates the pneumatic drive, with the lock being positioned to be readily seen when locked and safely operated if necessary from the wayside.

Abstract: A railway wagon suspension system which includes an axle assembly comprised of two wheelsets supporting springs for the wagon and interconnected by linkages at each of their ends via a respective bellcrank both of which bellcranks are pivoted to the wagon, confronting arms of the two bellcranks being pivotally interconnected by a link, and the linkages from each end of the two wheelsets being pivotally connected to the other arm of a respective one of the bellcranks with the linkages from one wheelset being closer to the end of that arm than the linkages from the other wheelset.

Abstract: A rope hook arrangement for a vehicle has a case fixed to a vehicle body, and a movable member slidable rectilinearly in the case so that a rope hook fixed to the movable member can be projected from the vehicle body and retracted. A spring is disposed between the case and movable member for urging the movable member to a projected position. A push-lock-push-release mechanism is provided for holding the movable member in a middle position in which the rope hook is retracted, allowing the movable member to move to the projected position when the movable member is depressed from the middle position to a depressed position and unhanded at the depressed position, and allowing the movable member to return to the middle position when the movable member is depressed from the projected position to the depressed position and unhanded. The push-lock-push-release mechanism comprises a rotatable member mounted on the case, and engaging and actuating projections formed in the movable member.

Abstract: A rope hook arrangement for a vehicle has a case fixed to the vehicle body and a movable member slidable rectilinearly in the case. A rope hook fixed to one end of the movable member can be projected from the vehicle body and retracted. A spring is disposed between the case and movable member so that the movable member is always urged outwardly. A latch lever is swingably mounted on the movable member, and first and second pins are fixed to the case. The first pin engages with the latch lever and holds the movable member in a middle position in which the rope hook is snugly retracted. If the movable member is pushed down to a depressed position by hand, and unhanded at that position, the first pin pushes the latch lever to a release position, so that the movable member is lifted up by the spring to a projected position in which the rope hook is projected from the vehicle body.

Abstract: A stand alone double stack railroad well car for carrying stacked containers is disclosed. The car includes a platform suspended at each end upon swing hangers from a multiple axle truck or suspension system, utilizing leaf springs. Adjacent axles are connected by bridging beams which are pivotally connected to the leaf springs. Shear pads connected between the bridging beams and axles permit limited angular displacement of the axles relative to each other. Axle guards are provided for limiting lateral movement of the car relative to the trucks. An axle guard frame assembly is rotatably connected to the underside of the car body or platform at each end. It includes vertical axle guards which engage the axle bearing adapter housings to limit lateral movement. The rotatable connection of the axle guard frame assembly on the underside of the carbody permits limited rotational or pivotal movement of the axle guard frame as the suspension system negotiates a curve in the track.

Abstract: Modern D.C.-tractioned trains and track circuit signal systems as well as high load trains need a special track construction. A new concrete cross sleeper system is provided for high load and high velocity tracks as well as for urban rapid transit systems comprising rails and sleepers having center part, connected to bar shaped ends and having reinforcing means.On the bar shaped ends two rail seats for each rail are positioned having elastic, electrically non-conducting plastic pads. The rails are fastened onto the rail seat by special tension means clamping the foot of the rail and fixed into plugs in the sleepers. This feature allows a triple point fixing of the rail at each sleeper end. Tracks on asphalt pavement may be secured by anchor device of the general type as sold under the trademark NELSON.The new track construction decreases the intermittent load of the rail/sleeper system and avoids trouble in track circuit signal systems existing in normally used prestressed concrete sleepers (FIG. 1).

Abstract: A control device for an electric train formed of plural coupled carriages each of which receive power from an overhead power line via a collector, wherein each carriage is provided with a power converter for converting power from the overhead line to a suitable level for a load within the respective carriage. Each carriage also includes an auxiliary power supply device having an input coupled to the output of the power converter of the another carriage and an output coupled to an input of the power converter of the same carriage, so that if the power level from the overhead line to one carriage falls below a predetermined value, the power converter of that carriage is supplied with power from the power converter of another carriage through the intermediary of the auxiliary power supply device of the same carriage.

Abstract: A twin wheel rim assembly is disclosed for use with an axle having a hub with an outwardly extending lip adjacent its inner end. The entire wheel assembly includes a pair of substantially identical wheels each having a rim with an outwardly flared portion as well as a tubular and cylindrical spacer. The wheels and the spacer are coaxially positioned over the hub so that the outwardly flared circumferential portion of one wheel abuts against the outwardly extending lip of the hub and so that the spacer is sandwiched in between the wheel rims. The wheel spacer is unable to slip because it has affixed to it evenly spaced ribs between each pair of wheel spokes. Both ends of each rib abut between each pair of wheel spokes. The ribs on the inside of the spacer is the primary element which prevents wheel slippage. This element in conjunction with the serrated edges will prevent wheel slippage.

Abstract: A sectioned, roller type extensible and retractable enclosure for open bed vehicles employs a spring mechanism through which the slats of the cover are maintained in tension (in the direction of the length of the cover and away from the roll) during rotation of the stowage roller. As a result of this tension, the slats of the cover are effectively prevented from drooping as they are unwound from the roll and enter the guide channels, so that the unwanted bunching of the slats does not occur.