A hedgetrimmer having a blade assembly that includes a sawblade for cutting through larger branches and other vegetative foliage. The blade assembly includes a reciprocating blade having an integrally formed sawblade portion that moves back and forth cutting motion. The other blade is fixed and includes a bevelled interior edge that helps debris being cut to pass over the blade and prevent getting stuck.

In a sawing cord the three constituting elements of steel cord, sawing bead and sleeve polymer in between the beads must work optimally together. In order to improve the injection molding quality the inventors disclose an injection mold wherein the injection channels inject polymer from opposite sides of the steel cord into the injection cavity. The injection mold comprises two half molds that form the injection cavity when closed. Different preferred embodiments are described inclusive the use of channels having a tree structure, preferably a binary channel tree, preferably a balanced binary tree and most preferred a balanced binary tree with equal length pathways from feed channel to each injection channel. The use of heated channels is disclosed and the rules for balancing between the number of heated versus non-heated channels are explained. Furthermore the method to use such mold and the product resulting from the use of the mold are claimed.

A method of using a cutting blade on a portable band saw. The method includes the step of providing a portable band saw. A cutting blade is provided which includes at least one tooth that has a linear rake face with a positive rake face angle transitioning uninterruptedly from a tip of said cutting tooth into a single radius to define a portion of said cutting tooth. The portable band saw is used to cut and object with the cutting blade of the portable band saw in a single continuous linear cut direction.

A method of using a cutting blade on a portable band saw. The method includes the step of providing a portable band saw. A cutting blade is provided which includes at least one tooth that has a linear rake face with a positive rake face angle transitioning uninterruptedly from a tip of said cutting tooth into a single radius to define a portion of said cutting tooth. The portable band saw is used to cut and object with the cutting blade of the portable band saw in a single continuous linear cut direction.

An oscillating blade including a shank having a tool mounting end and a blade end, the shank defining a longitudinal shank axis extending from an oscillation axis of the tool mounting end, the longitudinal shank axis defining a longitudinal direction. The oscillating blade also includes a first shank extension extending from the blade end in a first lateral direction and having a first cutting edge directed in a first cutting direction, and a second shank extension extending from the blade end in a second lateral direction and having a second cutting edge directed in a second cutting direction. The oscillating blade also includes a shaving edge disposed on the blade end. The first shank extension is spaced from the second shank extension in the longitudinal direction, and the shaving edge is at least partially disposed between the first shank extension and the second shank extension in the longitudinal direction.

An oscillating blade including a shank having a tool mounting end and a blade end, the shank defining a longitudinal shank axis extending from an oscillation axis of the tool mounting end, the longitudinal shank axis defining a longitudinal direction. The oscillating blade also includes a first shank extension extending from the blade end in a first lateral direction and having a first cutting edge directed in a first cutting direction, and a second shank extension extending from the blade end in a second lateral direction and having a second cutting edge directed in a second cutting direction. The oscillating blade also includes a shaving edge disposed on the blade end. The first shank extension is spaced from the second shank extension in the longitudinal direction, and the shaving edge is at least partially disposed between the first shank extension and the second shank extension in the longitudinal direction.

Metal sleeves are used as carriers for the abrasive layer of sawing beads. Such sawing beads are threaded on a steel cord and are separated by a polymer thus forming a sawing cord for sawing of hard and brittle materials such as stone or concrete. These metal sleeves have a large influence on the overall performance as well as on the cost of the sawing cord. The inventors propose the method of metal injection molding to make the metal sleeves in large quantities with an optimized geometry which is not possible with the current methods for making the metal sleeves. Over and above the inventive sleeves are particularly well suited for application of the abrasive layer by means of laser cladding. Beads made by laser cladding on the inventive metal sleeves as well as sawing cords comprising such beads are therefore part of the invention.

A cutting tool mechanism and cutting tool (11) including the mechanism (31), for cutting hard material such as concrete and stone is disclosed. The tool (11) has one or two blades (23), (25) each driven by a mechanism (31). Each mechanism (31) has an input coupling 35 for transmission of rotary motion from a motor, and an output coupling (141), (143) to transmit resultant orbital, oscillatory or impact motion to the blade (23), (25). A suspension or sliding coupling located between the output coupling (141), (143) and the blade (23), (25), is provided, through which motion to the blades is transmitted. The suspension or sliding coupling absorbs impacts of the blades with the material being cut, rendering the tool more controllable.

A cutting tool mechanism and cutting tool (11) including the mechanism (31), for cutting hard material such as concrete and stone is disclosed. The tool (11) has one or two blades (23), (25) each driven by a mechanism (31). Each mechanism (31) has an input coupling 35 for transmission of rotary motion from a motor, and an output coupling (141), (143) to transmit resultant orbital, oscillatory or impact motion to the blade (23), (25). A suspension or sliding coupling located between the output coupling (141), (143) and the blade (23), (25), is provided, through which motion to the blades is transmitted. The suspension or sliding coupling absorbs impacts of the blades with the material being cut, rendering the tool more controllable.

A device for cutting a block of stone that includes a support bar including a monolithic metallic plate, and a number of fluid ports attached to the plate. The device also includes a wear bar that is secured to the monolithic metallic plate and a lower longitudinal slot, and a cutting belt positioned in the lower longitudinal slot of the wear bar and including a downward-facing cutting surface to cut the block of stone. A method of cutting the stone block is also disclosed.