Abstract: Provided with a wheeled road surface cutter comprising a front section attached thereto with steerable front wheels on both sides thereof, a rear section attached thereto with rear wheels, a pivot joint for coupling the front end of the rear section to the rear end of the front section, and a cutting device attached to the rear section on one side and substantially aligned with one of the front wheels on the same side.

Abstract: A vehicle for transporting and dispensing materials required for filling and repairing cracks in roadways and highways or similar traffic-bearing surfaces comprises a supply tank for asphalt mix or emulsion or the like liquid crack-filling material, a hose leading from the asphalt supply tank to a dispensing area adjacent the vehicle, a directable applicator connected to the hose for directing crack-filling materials from the asphalt supply tank into cracks in the roadway, a resilient squeegee blade supported from the vehicle for dragging across the roadway dispensing area after crack-filler material is directed into cracks so that the crack-filler material is leveled, a hopper for carrying sand, rock chips, or other substantially dry structural material for covering the liquid crack-filler material and binding therewith to form in the aggregate substantially firm roadway surfaces, a dispensing broadcaster attached to the vehicle adjacent the dispensing area, and a conveyor interconnected with the hopper for

Abstract: A paving material distribution system for uniformly distributing a layer of paving material includes a containment member that is slidably mounted on the rear frame of a paving machine. A first means for conveying paving material laterally with respect to the direction of travel of the paving machine is positioned at a preselected distance from the containment member. Power means are also included to controllably, simultaneously move the containment member and the first means in a substantially vertical direction.

Abstract: A pick hole plug for sealing an opening in a manhole cover and the process for using such plug. The plug is formed from a soft uncured rubber polymer which has a larger diameter than the hole which it is to seal. The plug is compressed by hand and inserted into the pick hole. The plug deforms to conform to the shape of the sides of the pick hole and cures over a period of time as the heat and sunlight contact it.

Abstract: Telerobotic control apparatus for aligning the movable end of a motorized passenger loading bridge to the door in a vehicle enabling the loading and unloading of passengers and freight. The apparatus includes an improvement display and control system. The apparatus includes: sensors, a display, a set of operator command input devices, and a computer to implement the whole system. The display includes video from a camera, a graphic representation of the relative position of the passenger loading bridge, and text and graphic information on the system status. The control system accepts commands from the operator in the operators frame of reference and converts them to the passenger loading bridge's frame of reference for moving the passenger loading bridge.

Abstract: A pavement marker including a body (1), at least one hermetic chamber (14) in the body, a reflector panel (6,7) positioned in the side of the body (1) for each chamber and sufficiently transparent to allow the passage of light therethrough and form a window in the body (1) into the hermetic chamber (14), a substantially smooth external face on the reflector panel (6,7) which lies at an acute angle to a base surface of the body (1) and reflective prismatic projections (8) on an inner face of said reflector panel (6,7) with the projections spaced from a back face (11) of said chamber (14).

Abstract: A self-propelled screeding apparatus for uncured concrete or the like includes a frame, propulsion means for the frame, a telescoping boom including at least one longitudinally slidable member and hydraulic means to move the latter with respect to the frame, and a screeding device mounted on the boom which includes a vibratory double plate providing two spaced-apart, substantially co-planar flanges for contacting material being screeded.

Abstract: A manhole adjusting ring includes ring sections each having a vertically disposed connecting plate which is selected from an inventory of different sized connecting plates to interconnect an outer ring portion to an inner ring portion. The resulting adjusting ring section will compliment the dimensions of the manhole casting including the distance from the top peripheral edge to the casting ledge on the inner wall.

Abstract: A movable asphalt mixing plant which is towed behind a milling machine. The mixing plant includes an input conveyor which receives the crushed aggregate from the milling machine. The aggregate is then introduced into a pug mill carried by the mobile plant. A heated storage tank and appropriate pumps and conduits for asphaltic cement located on the mobile plant allow the asphaltic cement to be mixed with the aggregate in the pug mill. The amount of asphaltic cement added to the aggregate may be controlled by a microprocessor which receives input regarding the production rate and input weight of aggregate. Asphaltic paving material produced by the pug mill is dispensed from the rear of the plant. A heating system employing hot circulating oil is also provided to ensure that the pumps and conduits for the asphaltic cement flow freely. A steering mechanism is provided for the plant to ensure centering for proper reception of aggregate and dispensing of paving material.

Abstract: A side-wall beam is installed on a base for a guideway for a magnetic levitation vehicle. An elastic body is interposed between the side-wall beam and the base. Then, the side-wall beam is fastened to the base with a tendon on an imaginary line which extends through an intermediate portion of the elastic body in the transverse direction of the side-wall beam and which extends along the longitudinal direction of the side-wall beam. The elastic body is thereby held under compression between the side-wall beam and the base. The side-wall beam is supported on the base through the elastic body, and also fastened to the base, holding the elastic body under compression between the side-wall beam and the base. Reactive forces produced by the compression of the elastic body act to resist forces tending to cause the side-wall beam to fall over. Any displacement of the side-wall beam which may be caused by forces generated when the magnetic levitation vehicle passes can thereby be kept within a predetermined range.

Abstract: A vehicle mounted vibrating tamping device for attachment to a support vehicle having an attenuated extensible boom to pre-position a vibrating multiple fixture head against a work surface. The tamping device is self-contained independently controlled for selective loading force on the work surface and interconnects with the hydraulic system of the vehicle.

Abstract: A method for fabricating and installation of a floating bridge or the like provides that a bridge superstructure is supported by a number of pontoons and has opposite ends anchored to shore fundaments. Prefabricated pontoons are positioned successively at mutually spaced locations on the water surface along a center line of a part of the bridge superstructure being formed. Such pontoons are suitably ballasted. Further bridge superstructure is fabricated successively in sections in a production unit positioned on a barge or on a platform stationarily positioned by the shore. Such sections are being pushed outwardly of the production unit one after the other, with a new section being made as a continuation of a preceding section. The fabricated part of the bridge superstructure, formed of several interconnected sections which gradually are protruded from the barge or platform, is slid or pushed out onto the pontoons that are positioned one after the other, and are mounted thereon.

Abstract: A modular ramp and landing assembly made from a plurality of similarly sized pre-manufactured concrete filled rectangular panels. The ramp portion is made from the modular panels attached by their shorter sides. A support post with an angularly arranged bracket is placed beneath the corners of adjacent panels to secure them together as well as support them. The landing or horizontal portion of this assembly comprises a similarly sized rectangular panel the long side of which is in abutting relationship with the short side of the end of the ramp. Fastener receivers are equi spaced in duplicate patterns from each corner through the bottom edge of each panel. The size of the panels and the spacing of the fastener receivers are such that minimum support legs and brackets may be utilized in constructing this assembly at a final site.

Abstract: An apparatus for operating a dock leveler including a linkage pivotally connected at a first end to the base plate. The second end of the linkage is adapted to selectively engage the center plate at times when the center plate is pivoted from its forward position toward its rearward position. Preferably, a roller is provided on the second end of the linkage and a cam member is mounted on the underside of the center plate in alignment with the path of the roller, such that the roller travels along the cam member to reduce the force required to operate the center plate pivoting means. A lever tube is rigidly connected to the second end of the linkage and is adapted to hold an operating lever. The operating lever is in a substantially vertical orientation at times when the center plate is in the stored and bridging positions.

Abstract: A three-wheeled machine carries a hopper positioned to receive paving material from a dump truck immediately in front of the machine, the hopper being emptied by a conveyor oriented transversely to the path of the machine. A left front wheel, a left rear wheel and a right side wheel support the machine and are so connected to the machine and to actuating mechanisms as to lift or lower the left and right sides of the machine in a selective manner, and thereby enable the machine to be elevated or lowered in level fashion, or to be inclined either toward the left or toward the right. The left rear wheel and the right wheel are independently driven and thus afford "skid steer" capability.

Abstract: A ditch filling fascine including a core comprising a plurality of inflatable core members, and a sleeve comprising a multiplicity of axially parallel sleeve members adjacent to one another and connected by at least two flexible ties such as chains. A compressed gas cylinder is provided for inflating the core, and is connected to the core members by a ring main manifold incorporating one way valves for allowing gas to flow into the core members only. The invention also provides a plurality of fascines in combination with a launching vehicle.

Abstract: A vehicle restraint is provided for securing a parked vehicle against a loading dock while the vehicle is being loaded or unloaded. The restraint includes a housing for below-ground installation and in which a ram is stored. The ram is mounted in the housing for vertical movement through an opening in the top of the housing, allowing the ram to move between a stored position and a raised position. Doors are provided for closing the opening in the top of the housing when the ram is in the stored position. A hydraulic cylinder is provided for moving the ram. A hook assembly is attached to the top of the ram for releasably retaining the vehicle. The hook assembly includes a hook in a stepped configuration to enable engagement of ICC bars having various heights and positioned various distances away from the loading dock wall. A sensor is provided for detecting when the hook engages the ICC bar of the vehicle and to stop the vertical movement of the ram when such engagement has been made.

Abstract: An expansion joint for bridge structure comprising a layer of composite consisted of rubber grains as the aggregates and synthetic resins with lower modulus of elasticity as the binder.

Abstract: A barrier gate for a longitudinal highway barrier of the type having first and second axially aligned barrier segments separated by a gap includes two elongated gates. These gates are mounted by rails and wheels for axial movement between an opened position in which the gates reveal the gap, and a closed position, in which the gates close the gap. The gates are designed to fit over and straddle the adjacent barrier segments, and are provided with a sidewall configuration that matches the shape of the barrier segments to eliminate snagging surfaces.

Abstract: An adjustable manhole top which can be readily raised up or down in minutes to correct problems when the ground around it heaves. A cylindrical sleeve with a plurality of spaced elongated ribs extending longitudinally along an internal surface thereof, is adjustably seated by its ribs resting in notches at predetermined elevations on riser blocks upwardly extending from height adjustment rings resting on the support rim.