A method (100) of producing toothed blades from a strip material is disclosed. The method (100) comprises: laser cutting (102) the strip material to form a plurality of teeth in an edge of the strip material; and mechanically machining (104) the strip material to remove at least part of a heat-affected portion of the edge resulting from the laser cutting. A toothed blade production line (400; 500) arranged to produce toothed blades from a strip material is also disclosed.

There is provided a cutting accessory for a power tool comprising a body bearing a cutting surface, wherein the body comprises a plurality of spaced apart regions of reduced thickness within the cutting surface to create at least one interrupted cutting surface overlying a second cutting surface. Abrasive cutting material is affixed to the cutting surface. The regions of reduced thickness are equispaced along the cutting surface. The body can be substantially tubular or a linear edge blade.

A saw band (1) includes a chamfered tooth (10) including two effective cutting edge portions (7) being arranged in the region of the chamfer (15) between which an ineffective cutting edge portion (8) of the first tooth (10, 11) is formed. In this way, five cutting channel portions (18) are formed by only two geometrically differently designed teeth (10).

A reciprocating saw blade for improving vibration and cordless runtime includes an elongated body having a front end portion and a rear end portion. An elongated cutting edge extends from the front end portion to the rear end portion and defines a longitudinal axis. An opposite non-cutting back edge extending from the front end portion to the rear end portion. The body has a thickness of approximately 0.89 mm to approximately 1.15 mm. A tang coupled to the rear end portion is configured to be coupled to a tool holder of a powered reciprocating saw. The cutting edge comprises a plurality of teeth and gullets. The teeth have a kerf width of approximately 1.29 mm to approximately 1.56 mm and are arranged in a pattern of alternating tooth pitch of a smaller first tooth pitch and a larger second tooth pitch.

A reciprocating saw blade that includes an elongated blade body defining an inner end and a distal end, a cutting edge located on one side of the blade body and extending between the inner and distal ends thereof and a tang located at the inner end of the blade body. The tang projects from the blade body at an acute angle of at least about 3 relative to a line tangent to an inner end of the cutting edge. The cutting edge includes a portion defining a substantially curved contour and optionally can include at least one further portion defining a non-curved contour.

A reciprocating saw blade includes a body defining a longitudinal axis. The saw blade includes an attachment portion coupled to the body. The attachment portion is able to couple to a reciprocating saw. The saw blade further includes a cutting portion having a plurality of cutting teeth. Each cutting tooth includes a tip and a protrusion spaced a first distance from the tip. The protrusion of a respective cutting tooth is spaced a first distance from the tip of the cutting tooth in a direction parallel to the longitudinal axis. A gullet is defined between the tip of a first cutting tooth and the protrusion of an adjacent second cutting tooth. The gullet includes a gullet width in a direction parallel to the longitudinal axis. The first distance is greater than the gullet width.

A saw blade includes a body, saw blade teeth disposed on a first edge of the body, and a ramp element disposed on a second edge of the body, the second edge opposing the first edge. The ramp element is repeated along the longitudinal axis of the body to define a ramp element pattern. The ramp element includes a rise portion disposed proximal to a cutting direction of the saw blade and a relief portion disposed distal to the cutting direction of the saw blade. At least one of the rise portion and the relief portion of the ramp element defines a variable curve geometry.

A recip blade has a cutting edge defining a cutting direction and a repeating pattern of cutting teeth. Each repeating pattern includes (i) a leading tooth with respect to the cutting direction that includes a rake face defining a first rake angle that is negative, and (ii) a trailing tooth following the leading tooth with respect to the cutting direction that includes a rake face defining a second rake angle that is less negative than the first rake angle.

A method for separating a dry fiber composite fabric, to a use of a separating device for separating a dry fiber composite fabric and to a wind power installation. A method for separating a dry fiber composite fabric with a multiplicity of fabric layers arranged one on top of the other, comprising providing the dry fiber composite fabric and a separating device, separating the dry fiber composite fabric with the separating device, which comprises a separating element with a toothing, wherein the toothing has a wave profile with a plurality of teeth, wherein the separating is performed by a substantially translational movement of the toothing on and/or in the dry fiber composite fabric with a stroke that is greater than a tooth tip spacing of two adjacent teeth of the toothing.

A saw blade comprises a blade backer with a pair of side surfaces that extend substantially parallel to each other. An intermediate surface extends between the pair of side surfaces of the blade backer. A plurality of teeth extends from the intermediate surface. At least one of the teeth is located entirely within planes containing the side surfaces of the blade backer. A tip is formed at an apex end portion of the one tooth. A leading face surface of the tip on the one tooth is disposed at an acute angle relative to a plane extending perpendicular to the planes containing the side surfaces of the blade backer.