Abstract: A power takeoff assembly, a drive assembly, a saw and a kit for a saw include a drive plate and drive shaft, for example for mounting to a fly wheel, and a bell housing for mounting to an engine block and for supporting a sheave. The sheave rotates on bearings supported by a housing tube on the bell housing, and a coupler couples the drive shaft, which extends into the tube, to the sheave. Side loading and cyclical loading on the drive shaft are reduced, dimensions of the saw can be reduced and operation of the saw can be more reliable.

Abstract: A concrete cutting saw (10) includes a wheeled main frame (12) on which a blade support frame (14) is mounted for movement between upper idle and lower cutting positions. Low and high speed blade arbors (16, 18) are rotatably mounted on the blade support frame (14) and each has an arbor head (24, 26) for selectively and alternately mounting either a low or high speed rotary cutting blade without any blade interference with the other arbor head. A drive mechanism (32) rotatively drives the low and high speed blade arbors (16, 18) at low and high speeds such that concrete cutting can be performed at the best rotational speed for the particular job cutting to be performed.

Abstract: A rugged demolition system, and method for its use, for pulling up horizontal structures such as concrete or asphalt and breaking them into pieces, pulling over and breaking up vertical structures such as retaining walls and house/building walls, pulling up vertically extending objects from the ground such as tree roots, and breaking up hard or compacted surfaces such as dirt for easier grading. The system has a spear mounted horizontally to the top of a downwardly curving pry hook assembly, a digging tooth and optional side hooks connected to the pry hook assembly, and the pry hook assembly optionally secured to a tubular support member depending perpendicularly from a plate. Although any position-controlling vehicle can be employed to cause the needed vertical, horizontal, and rotational movement of the plate during system use, the plate is configured for attachment to the standard mount of a skid steer loader.

Abstract: A method for cutting pavement of an asphalt road or a concrete road in a circle for installation of a manhole, by using a cutting blade which has a pavement cutting edge serves as a tip for cutting the pavement and side edges serve as an inclined cutting surface to bore an inside of the pavement cut by the pavement cutting edge, thereby cutting the pavement in a frusto-conical shape.

Abstract: A method for detaching a manhole frame (7) that is embedded in a road surface, wherein the manhole frame (7) is cut horizontally starting from the inside, without significant exposure of the outside area surrounding the manhole frame (7), by using a horizontally oriented rotating cutting blade (15) that performs eccentric circumferential runs along the inside of the manhole frame.

Abstract: A method for detaching a manhole frame (7) that is embedded in a road surface, wherein the manhole frame (7) is cut horizontally starting from the inside, without significant exposure of the outside area surrounding the manhole frame (7), by using a horizontally oriented rotating cutting blade (15) that performs eccentric circumferential runs along the inside of the manhole frame.

Abstract: A power takeoff assembly, a drive assembly, a saw and a kit for a saw include a drive plate and drive shaft, for example for mounting to a fly wheel, and a bell housing for mounting to an engine block and for supporting a sheave. The sheave rotates on bearings supported by a housing tube on the bell housing, and a coupler couples the drive shaft, which extends into the tube, to the sheave. Side loading and cyclical loading on the drive shaft are reduced, dimensions of the saw can be reduced and operation of the saw can be more reliable.

Abstract: To make a concrete roadway; a continuous section of concrete is poured and cut at an angle of between 5 degrees and 45 degrees downwardly in the direction of traffic flow, to form an angled cut with an overlying surface that can be pressed downwardly by a vehicle to reduce movement of the concrete with respect to the sections on either side of a joint in the pavement. With this cut, vehicles will press a top layer downwardly against a bottom layer. A rotary saw blade mounted at an angle to the roadway is used to cut the concrete.

Abstract: A machine for cutting pavement, street curbs, bridge components, or sidewalks. The cutting apparatus is mounted on a truck body for transport and can be extended from the truck and supported directly on the ground for cutting. The cutting apparatus includes a rotary saw mounted on rails for mobility in all directions at different angles. The rails are supported on the ground by extendable supports, and the supports can be adjusted to allow the saw to b used on uneven ground.

Abstract: A trencher with a rock saw wheel has a foldable section that may be pivoted to one side during transport of the trencher on a truck or trailer, in order to decrease the overall height of the trencher during transport, or can be removed to reduce transport weight.

Abstract: A trencher with a rock saw wheel has a foldable section that may be pivoted to one side during transport of the trencher on a truck or trailer, in order to decrease the overall height of the trencher during transport, or can be removed to reduce transport weight.

Abstract: A single arm support apparatus for a rockwheel for excavating a trench through difficult materials, including rock. The rock cutting attachment includes a frame assembly which supports a cutting wheel in a manner that permits it to be inserted into the ground to approximately the radius of the wheel. The cutting wheel mounts to a shaft that is supported by bearings on a single side of the wheel, and is rotationally driven by a hydraulic motor. Additional structure mounted on the frame provides depth control.

Abstract: A pavement cutter that saves construction materials and prevents repaired pavements from subsiding or collapsing includes a first tilting mechanism attached to a front wheel axis as a base for a tilting mechanism where the base chassis tilts around the rear wheels without restraint; a frame where a spherical shell disk, its rotating axis and a driving unit are mounted is rotatably connected to one side of the base chassis via a hinge, a second tilting mechanism to move the spherical shell disk upward/downward and a cutting circle determining mechanism to determine a cutting radius and its center, where circular or straight cuttings are attained by exchanging the spherical shell disk to the flat disk and vice versa.

Abstract: A cured-concrete-cutting saw which is sufficiently mobile as facilitates its transport to a work site located within a building, and between work sites within a building, for example, and which is useful in cutting block-out grooves for expansion joints between adjacent sides of adjacent concrete slabs and/or troughs in the surface of such slabs. The saw includes a housing, a blade assembly comprising a plurality of circular blades disposed in spaced apart parallel relationship to one another on the outboard end of a driven shaft that is mounted on the bottom of the housing. A motor provides power for rotation of the shaft and its blade assembly. Optionally, the motor provides power for propelling the saw over the top surface of a concrete slab. A mechanism is provided for operator adjustment of the depth of cut of the blades of the blade assembly from a position adjacent the aft end of the saw.

Abstract: An assembly is provided for excavating cavities in a road surface for a variety of purposes, among them, the formation of rumble strips, the installation of light reflective road markers, the milling of potholes, boring of holes for various purposes and the like. The system is used in combination with a vehicle having a motor powered vertically movable rear lift gate which in use defines a vertically displaceable substantially horizontal platform. A cutting apparatus is secured to the upward facing surface of the lift gate with the actual cutting portion being mounted on a rotatable drive shaft extending laterally of the gate, such that the cutting portion projects at least partially below the bottom surface of the lift gate, whereby with the gate in a lowered position, the cutting portion can engage the surface of the road on which the vehicle resides. A motor is secured to the upper surface of the gate powers the drive shaft.

Abstract: A machine is disclosed, for cutting pavement such as a sidewalk, a side edge of a bridge, a curb of an highway or the like. This machine has a powered truck-like vehicle having a support base, and a cutting apparatus mounted on the base. The cutting apparatus has two spaced-apart cylindrical booms where each boom has one end pivotally mounted on the base and an opposite end. Each boom may tilt about its one end in a vertical plane. A supporting bar is mounted on the opposite ends of the cylindrical booms so as to be free to rotate about the cylindrical booms within a plane perpendicular to the cylindrical booms. The supporting bar is provided with two extendible, ground-contacting legs at each opposite end thereof for stabilizing the apparatus. A rail-structure-holding head is slidably mounted on each cylindrical boom so as to slide along the cylindrical boom and to be free to rotate about the cylindrical boom within a plane perpendicular to the cylindrical boom.

Abstract: In order to simply and easily treat drainage produced by cutting a face to be cut such as concrete without discharging the drainage on a road, a floor of a building, or the like, the concrete cutting machine of the present invention comprises a cutting mechanism for cutting the face by means of a rotating blade covered by a cover, a water supply mechanism for supplying and jetting water cooling to the rotating blade, and a collecting mechanism for collecting the drainage produced inside the cover by the jetting of the water cooling when the face is cut by the rotating blade. Further, in the collecting mechanism, the drainage produced inside the cover is sucked through a sucking portion provided on the lower end periphery of the cover to a collecting portion by a sucking operation of a suction blower so that the drainage in which air is removed at the collecting portion is discharged by a pump for collection.

Abstract: A cutting device for performing a cutting operation, which can reduce wasteful cutting, can easily perform an accurate and neat cutting, and can have a long service life. The cutting device includes a guide supporting member, mounted to a distal end of a working machine on a self-propelled working vehicle in such a manner as to be freely swingable; a guide element, horizontally supported by the guide supporting member; a cutter, mounted to the guide element; a first movement device, for moving the cutter with respect to the guide element; and a second movement device, for moving the cutter in a direction along the guide element. A vibration preventing system can be included. Since the cutter vertically moves at a time of entering, a cutting can be efficiently performed with no wasteful cutting; and since vibration is reduced, the service life is extended.

Abstract: A road cutting apparatus is detachable and connectable to a self-propelled front end loading machine. The cutting apparatus includes a rigid frame structure having a connecting section for attaching the frame structure to the front end loading machine and a planar mounting section. An engine including a power take off (PTO) is mounted to a top surface of the mounting section for driving the circular cutting apparatus, and a belt drive is attached to the PTO. The belt drive includes a driving pulley and a following pulley, and a belt disposed between the driving pulley and following pulley provides for transfer of torque therebetween. A driven shaft with a first end and a second end is mounted to the mounting section and attached to the following pulley at its first end, and a retainer blade is connected to the second end for coupling to a circular cutting blade. A cutting assembly is mounted on the mounting section which includes the circular cutting blade and a cooling system for cooling the cutting blade.