The invention relates to an interface between a knife and a knife holder, wherein the knife and the knife holder are designed such that the knife can be mounted on the knife holder in such a way that the knife is initially positioned on the knife holder in the axial direction, and then by rotating either the knife relative to the knife holder and/or the knife holder relative to the knife, the knife is locked on the knife holder with respect to the axial direction, wherein the knife has a single central fastening opening which is delimited by a knife edge region, and the knife holder has a fastening section for the fastening opening of the knife, which is delimited by a holder edge region.

A unique design is provided that increases the strength and extends the life of an asphalt saw blade. The asphalt saw blade may include a main body, outer plates and cutters that are secured to the main body and outer plates via a notched interface. The cutters can include cutting elements and a plate that reinforces the cutting elements while also shielding the cutter's main body from wear.

A unique design is provided that increases the strength and extends the life of an asphalt saw blade. The asphalt saw blade may include a main body, outer plates and cutters that are secured to the main body and outer plates via a notched interface. The cutters can include cutting elements and a plate that reinforces the cutting elements while also shielding the cutter's main body from wear.

A circular saw includes a circular disk-shaped body with an outer periphery having saw teeth separated by gullets and saw tooth tips at the saw teeth. The saw tooth tips have a saw kerf. At least one of the gullets has a radially innermost margin at a first radius. The body has a thickness discontinuity at a second radius, the second radius being at least equal to the first radius. The body has a first thickness adjacent to and radially outside of the thickness discontinuity and a second thickness adjacent to and radially inside of the thickness discontinuity. The second thickness is greater than the first thickness. The ratio of the difference between the second thickness and the first thickness, and the difference between the kerf and the first thickness is equal to or greater than 0.25.

Methods and apparatus for making and using tools, for example concrete cutting blades. The tool includes a first layer and a 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.

An enhanced material-processing device and method are disclosed, having a processing tool of substantially circular circumference, which is operative with a power tool having a rotating spindle and jaws, which clamp the processing tool. The enhanced material-processing device has a central opening that is entered concentrically in the processing tool for receiving a clutch mechanism, and a hub structure. The hub structure is associated with the clutch mechanism to form a slip clutch that is integrally mounted in the enhanced material-processing device and is operative by application of an axial compression friction fit on the processing tool, which slips relative to the rotating spindle when a threshold torque limit is reached. The clutch mechanism is preloaded in axial compression through a predetermined elastic strain distance to provide a friction fit having a torque limit threshold, which torque limit of the slip clutch is controllably pre-adjustable.

The present invention relates to an apparatus (1) for pulverizing a material. The apparatus comprises a stationary housing (3) having an interior space and at least one interior wall facing the interior space. At least one sawblade (9) is disposed in the interior space and arranged rotatable with respect to the stationary housing (3). The at least one sawblade (9) has a periphery (12) provided with a plurality of cutting teeth (15) for cutting the material and a plurality of collecting notches (17) for collecting the cut material. The apparatus comprises an inlet opening (19) for feeding material to the interior space, and an outlet opening (21) for dispatching pulverized material from the interior space. The interior wall (7) of the housing is provided with a plurality of recesses (23) facing the periphery (12) of the sawblade (9), arranged to receive the cut material from the collecting notches (17) of the sawblade (9), and to revert the cut material to the periphery (12) of the sawblade (9) so that the material will be cut multiple times before it is dispatched from the apparatus. The interior wall (7) surrounds a main part of the periphery (12) of the at least one sawblade (9), and the inlet opening (19) and the outlet opening (21) are arranged in the interior wall (7) and in direct communication with the interior space (5) so that the material enters and leaves the interior space (5) during one revolution of the at least one sawblade (9).

Tool cores may have removable sections, which may be removable without damaging, cutting or severing attachment configurations for the removable sections. The removable sections may be handled simultaneously. Moving parts used to facilitate removal of the removable sections may be secured in a pre-loaded configuration.

A saw blade can include a blade body having a cutting edge defined by multiple teeth. The teeth can be disposed in a repeating pattern including a raker tooth, a first set tooth having a light offset to a right side of the blade body, a second set tooth having a heavy offset to the left side of the blade body, a second raker tooth, a third set tooth having a light offset to the left side, and a fourth set tooth having a heavy offset to the right side of the blade body. Each tooth can include a tip, rake face, gullet having a gullet depth, and one or more clearance surfaces. The pitch distance and gullet depth of the heavy offset teeth can be less than the pitch distances and gullet depths of the remaining teeth to provide an increased amount of strength for the heavy offset teeth.

An apparatus, system, and method for removing and installing slasher teeth in a saw are provided. The apparatus has a first body and a second body having a space formed therebetween, wherein a slasher tooth is positionable within the space. At least one locator pin is connected to at least one of the first and second body, the at least one locator pin contactable to the slasher tooth to locate the first and second body relative to the slasher tooth. At least one engagement device is positioned on one or both of the first and second bodies, the at least one engageable device being actuatable, whereby actuation of the at least one engagement device moves it relative to the first and second bodies and into the space where the at least one engagement device contacts a rivet positioned between the slasher tooth and a saw body.