Assemblies to cut a hollow piling are provided, which may have a pressurized hydraulic fluid supply configured to supply enough force to cut through up to the circumference of a piling having a housing having a cavity to receive the hydraulic fluid, the housing having at least one cylinder wall; at least one piston assembly slidably disposed within the at least one cylinder wall configured to extend from the at least one cylinder wall in response to the introduction of pressurized hydraulic fluid into the housing cavity; and a blade attached at a radially distal end of the piston assembly, whereby as the blade extends through the cylinder wall, a cutting force is applied to an encountered piling wall.

A cutter is provided for cutting through obstructions disposed in the interior of pipes ranging in size from approximately 8 to approximately 15 in diameter or from approximately 12 to approximately 24 in diameter. The cutter has been reduced in size relative to known root cutters to be capable of being used with smaller-diameter pipes, but is sufficiently powerful to cut through obstructions, such as mineral deposits, for example, that known flexible cutters capable of being used with these smaller-diameter pipes are incapable of cutting through.

A borehole is bored to a borehole target depth in a site and a geothermal heat exchanger is inserted into and then secured in the borehole at the desired depth. Once the heat exchanger has been secured in the borehole, the heat exchanger has a closed distal end and an open proximal end and has at least one fluid path between the closed distal end and the open proximal end, with installation fluid disposed in the fluid path(s). After securing the heat exchanger in the borehole and before excavation of a portion of the site immediately surrounding the borehole, the heat exchanger is temporarily sealed by installing, through the open proximal end, at least one respective internal seal in each fluid path. For each fluid path, the internal seal(s) will be disposed below a respective notional subgrade depth and excavation of the site immediately surrounding the borehole can proceed.

An exemplary pipe cutting accessory includes a shaft extending along an axis and having a front end portion a rear end portion configured to be coupled to a tool holder of a power tool. A disc-shaped cutting blade is fixedly coupled to the front end portion of the shaft and configured to rotate about the axis together with the shaft. A roller portion is concentrically received over the front end portion rearward of the cutting blade. The roller portion has a cylindrical outer surface configured to roll along an inside wall of a pipe while the shaft and cutting blade rotate about the axis to cut a pipe from an inside of the pipe. A depth stop may be movably coupled to the shaft or the roller portion and configured to abut an end of the pipe.

A cutting device for cutting a pipe having a pipe wall. The cutting device includes an elongate carrier having a tool end which is engageable with a power tool and an opposed free end. The device includes a guide wheel located at the free end of the carrier which is loosely mounted thereon for rotation relative thereto, having a bearing surface extending parallel to a longitudinal axis of the carrier. The device also includes a cutting element having a peripheral cutting edge which is located adjacent to the guide wheel being positioned intermediate the guide wheel and the tool end. The cutting element is of greater transverse dimension than the guide wheel so that when the bearing surface bears against an internal surface of the pipe the distance between the cutting edge of the cutting element and the bearing surface enables the cutting element to cut through the pipe wall.

The invention relates to a tray covering element essentially constituted of a first portion (2), which covers the upper surface of a tray (5), in the manner of a placemat, and a second portion (3), which creates an outer edge for the first portion and which is envisaged to cover the outer and upper edge (50) of the tray. The second portion (3) comprises a third portion (30) located laterally and protruding from the edge (50) and designed to bend downwards and fold around the edge of the tray (5) and cover the lower edge so that the user does not touch the tray when holding it, only the tray covering element.

A cutting guide system used with a rotary cutting tool to cut a sink drain fitting in a sink includes a cylindrical sink collar having an open lower end with a radially-projecting lower edge. A cylindrical tool engagement collar at an open top end engages the rotary cutting tool, and at an outside surface engages an inner wall of the cylindrical sink collar. A rotary shaft engages a rotary tool chuck at a proximal end and has at a distal end a rotary blade mount for a generally circular rotary blade. With the tool engagement collar fixed with the rotary cutting tool, and with the sink collar fixed with the tool engagement collar, the rotary cutting tool is inserted into the sink drain fitting to cut through the sink drain fitting in a circular path. Spark arresters, a garbage disposable support stand, and a debris-catching bowl are further included.

The invention relates to a tray covering element essentially constituted of a first portion (2), which covers the upper surface of a tray (5), in the manner of a placemat, and a second portion (3), which creates an outer edge for the first portion and which is envisaged to cover the outer and upper edge (50) of the tray. The second portion (3) comprises a third portion (30) located laterally and protruding from the edge (50) and designed to bend downwards and fold around the edge of the tray (5) and cover the lower edge so that the user does not touch the tray when holding it, only the tray covering element.

A tube cutting apparatus includes an inner blade, a drive shaft, a coupling shaft, a planetary gear, and a ring gear. The outer blade has an inner peripheral surface which contacts an entire circumference of an outer periphery of a work W so as to cover a predetermined axial range of the outer periphery. The drive shaft is rotatably supported inside the work W coaxially with the work W and defines a bore therethrough at a position decentered by a predetermined amount within the drive shaft. The coupling shaft is rotatably supported in the bore. The inner blade is rotatably retained on an eccentric shaft decentered at a front end portion of the coupling shaft and is positioned inside the work W. The planetary gear is positioned outside the work W and fitted on a rear end portion of the coupling shaft coaxially and meshes with the ring gear.

A cutting device for cutting a pipe having a pipe wall. The cutting device includes an elongate carrier having a tool end which is engageable with a power tool and an opposed free end. The device includes a guide wheel located at the free end of the carrier which is loosely mounted thereon for rotation relative thereto, having a bearing surface extending parallel to a longitudinal axis of the carrier. The device also includes a cutting element having a peripheral cutting edge which is located adjacent to the guide wheel being positioned intermediate the guide wheel and the tool end. The cutting element is of greater transverse dimension than the guide wheel so that when the bearing surface bears against an internal surface of the pipe the distance between the cutting edge of the cutting element and the bearing surface enables the cutting element to cut through the pipe wall.