Abstract: Methods and apparatus for making and using tools, for example concrete cutting blades. The tool includes a first layer and second layer that are oppositely disposed. The first and second layers include working surfaces that support at least one working element when the working element is applied to a work piece. Additionally, an intermediate structure is included between the first and second layers. The intermediate structure can include a plurality of components extending in the area between the structural surfaces and the working surfaces.

Abstract: Methods and apparatus for making and using tools, for example concrete cutting blades, may use laminations. They may also include inserts, such as structural inserts, damping inserts and fluid flow elements. Fluid flow elements may include a tube, a transition element including an inlet fitting, a fluid pressure containment structure inserted into the channel of the blade, an added material resistant to effects of the fluid including plastics, coatings and films, and other structures. Additional nozzle structures may be included. Methods and apparatus for making and using tools including concrete cutting blades having improved damping characteristics may include inserts, plugs and other structures, including those made from materials softer or more ductile than the tool material.

Abstract: Methods and apparatus for making and using tools, for example concrete cutting blades, may use laminations. They may also include inserts, such as structural inserts, damping inserts and fluid flow elements. Fluid flow elements may include a tube, a transition element including an inlet fitting, a fluid pressure containment structure inserted into the channel of the blade, an added material resistant to effects of the fluid including plastics, coatings and films, and other structures. Additional nozzle structures may be included. Methods and apparatus for making and using tools including concrete cutting blades having improved damping characteristics may include inserts, plugs and other structures, including those made from materials softer or more ductile than the tool material.

Abstract: A vehicle for terrain travel includes a chassis, an operator platform including space for footing, a first isolation mechanism and a second isolation mechanism operably connected between the chassis and the operator platform. The isolation mechanisms are to be placed either below, above or level with the operator platform and at substantially opposite edges of the operator platform. Each isolation mechanism at least partially absorbs motion from the chassis. The isolation mechanisms may be made up of telescopic members, a biasing member or a dampening device. One of the isolation mechanisms may provide pivotal coupling of the operator platform to the chassis and at least partially absorb motion from the chassis.

Abstract: Drill stand including a drill column (4) having front and rear tracks (47, 47?; 48, 48?), at least one of which has a flat track surface and the other a V-shaped track surface. The column 4 includes slot receivers (49, 49?) for protective bumpers (50, 50?) and is mounted on a base plate (2). A carriage (3) reciprocates a drill motor on the drill column (4) and the carriage (3) has internal rollers (51, 51?, 52, 52?) corresponding to the front and rear tracks (47, 47?; 48, 48?).

Abstract: Drill stand (1) including a base plate (2), a carriage (3) arranged to be able to carry a drill motor and a drill column (4) which is pivotally mounted to a front part (5) of the base plate. The drill column is supported by a back support (7) located in a longitudinal direction rear of the drill column and is pivotally mounted to a back part (8) of the base plate, and a back side of the drill column facing the back support (7) is arranged as a track (10) having lateral wings (11, 11?), a right side wing (11) and a left side wing (11?). A clamping arrangement fastened to both of the back support and the track (10) enabling them to be fixed to each other in different positions along the track by clamping.

Abstract: A pavement treatment apparatus, for example a concrete saw, includes a bias element for biasing one part of the apparatus toward another part of the apparatus. The bias element may be one or more springs extending between an engine platform and a handle assembly.

Abstract: A movable machine such as a concrete saw has an isolator or other damping element between the working tool portion of the machine and the supporting structure, such as a frame, chassis or other structure. The working tool portion of the machine may include a tool and a motor and the tool may include a support mounted or otherwise fixed to the motor.

Abstract: A vehicle for terrain travel includes a chassis, an operator platform including space for footing, a first isolation mechanism and a second isolation mechanism operably connected between the chassis and the operator platform. The isolation mechanisms are to be placed either below, above or level with the operator platform and at substantially opposite edges of the operator platform. Each isolation mechanism at least partially absorbs motion from the chassis. The isolation mechanisms may be made up of telescopic members, a biasing member or a dampening device. One of the isolation mechanisms may provide pivotal coupling of the operator platform to the chassis and at least partially absorb motion from the chassis.

Abstract: Abrading and cutting devices such as saws include waste containment systems and methods to improve removal of slurry or other contaminants from a work area during operations, and separation of slurry from a carrying medium such as air. A blade guard includes fluid channels, and may be removable from a blade guard carriage. The carriage may be used to minimize any need to readjust the blade guard position when the blade guard is returned to the carriage for further use. A vacuum bar may be included on the carriage. A vacuum pickup assembly may be used with a blade guard, and the vacuum assembly may include separate and/or different vacuum pickup configurations.