Abstract: A tool unit for a cutting or sawing machine with a tool carrier, including a first tool and a second tool. The first and second tool include a disk shaped cutting blade and a blade driving member. The first tool is secured to the second tool by means of a central clamping unit. Each blade driving member has a an aperture for attaching the first and second blade driving member together using the central clamping unit. The at least one disk shaped cutting blade has an at least partly recessed portion, adjacent to the aperture. The recessed portion is provided for attaching the disk shaped cutting blade to the corresponding blade driving member by holding the recessed portion axially between a main part and a blade supporting part of the corresponding blade driving member, ensuring an essentially flat outer extension plane of each tool.

Abstract: A power cutter including a tool unit, an internal combustion engine having an engine cylinder with cylinder bore having a center line and an exhaust port formed in the engine cylinder, a crankshaft, crankcase and an assembly for supplying air and fuel to the engine, and a muffler accommodated in a close and side by side relationship with the engine cylinder, the muffler includes an exhaust gas inlet and an exhaust gas outlet, such that the exhaust gas inlet is adapted to receive the exhaust gases from an exhaust port of the engine cylinder, wherein the exhaust gas inlet is provided on the top or bottom or local side of the muffler.

Abstract: A power cutter including a tool unit, an internal combustion engine having an engine cylinder with cylinder bore having a center line and an exhaust port formed in the engine cylinder, a crankshaft, crankcase and an assembly for supplying air and fuel to the engine, and a muffler accommodated in a close and side by side relationship with the engine cylinder, the muffler includes an exhaust gas inlet and an exhaust gas outlet, such that the exhaust gas inlet is adapted to receive the exhaust gases from an exhaust port of the engine cylinder, wherein the exhaust gas inlet is provided on the top or bottom or local side of the muffler.

Abstract: A cutting or sawing machine (1) comprising a machine body (3), at least one disc shaped, rotatable tool (16a, 16b), an elongated tool carrier (14) having the substantial shape of a flat bar having a front end and a rear end, two opposite broad sides and two opposite edge sides, said rear end being connected to the machine body. The tool carrier comprises at least two elongated side walls (24, 25), a first elongated side wall (24) on one broad side of the tool carrier, a second elongated side wall (25) on the opposite broad side, said first and second side walls being essentially parallel with each other, and the front part of either one of the side walls or of a possible central elongated member (25) between the first and second side walls is provided with a bearing hole (28a) intended to carry a bearing of sliding contact type or of rolling contact type, i.e.

Abstract: A tool unit (3) for a cutting or sawing machine with a tool carrier (103) enabling especially deep cuts, comprises a first tool (1) and a second part (2, 50). The first tool (1) comprises a disk shaped cutting blade (10) and a first blade driving member (40). The second part (2, 50) comprises either a second blade driving member (50), or a second tool (2) comprising a disk shaped cutting blade (10) and a second blade driving member (50). The first tool (1) is secured to the second part (2, 50) by means of a central clamping unit. Each cutting blade (10), has a central aperture defined by a central edge, and a peripheral cutting edge (13), being the working part of the tool (1, 2). The blade driving members (40, 50) are arranged to rotate together with the disk shaped cutting blade/s (10) about an axis of rotation (A). At least one of the driving members (40, 50) has a circumferential driving surface (41, 51) provided to be able to cooperate with an endless power transmission means.

Abstract: A rotatable cutting tool unit of a tool assembly for a cutting machine that is used in conjunction with an associated method of cutting provides several novel aspects. The tool arrangement, which includes two tool units, includes first and second disk-shaped tools rotatable about an axis. The tools define maximum tool arrangement boundaries along the axis. A driving arrangement, at an axial location between the first and second tools, supports the first and second tools for rotation and transfers driving force. A radially outer periphery of the driving arrangement is at a radius less than a radius of a peripheral cutting edge portion of the first tool and less than a radius of a peripheral cutting edge portion of the second tool.

Abstract: A rotatable cutting tool unit of a tool assembly for a cutting machine that is used in conjunction with an associated method of cutting provides several novel aspects. The tool arrangement, which includes two tool units, includes first and second disk-shaped tools rotatable about an axis. The tools define maximum tool arrangement boundaries along the axis. A driving arrangement, at an axial location between the first and second tools, supports the first and second tools for rotation and transfers driving force. A radially outer periphery of the driving arrangement is at a radius less than a radius of a peripheral cutting edge portion of the first tool and less than a radius of a peripheral cutting edge portion of the second tool.

Abstract: Working tool and machine for sawing or cutting, comprising an annular blade (2) intended to be rotated about an axis of rotation, encircling the axis of rotation, the annular blade comprising an annular blank (3; 3?) and means (15), e.g. diamond segments (15), forming the working part of the tool and provided in connection to an outer edge (31) of the blank (3; 3?), the blade and blank also having an inner edge (19), an inner edge portion (18) comprising driving surfaces for rotation of the tool about the axis of rotation, and a web portion (23) between the outer edge (31) of the blank and the inner edge (portion) (18), the web portion having a first side (24) and a second side (27).

Abstract: A cutting or sawing machine (1) comprising a machine body (3), at least one disc shaped, rotatable tool (16a, 16b), an elongated tool carrier (14) having the substantial shape of a flat bar having a front end and a rear end, two opposite broad sides and two opposite edge sides, said rear end being connected to the machine body. The tool carrier comprises at least two elongated side walls (24, 25), a first elongated side wall (24) on one broad side of the tool carrier, a second elongated side wall (25) on the opposite broad side, said first and second side walls being essentially parallel with each other, and the front part of either one of the side walls or of a possible central elongated member (25) between the first and second side walls is provided with a bearing hole (28a) intended to carry a bearing of sliding contact type or of rolling contact type, i.e.

Abstract: A rotatable cutting tool unit of a tool assembly for a cutting machine that is used in conjunction with an associated method of cutting provides several novel aspects. The tool arrangement, which includes two tool units, includes first and second disk-shaped tools rotatable about an axis. The tools define maximum tool arrangement boundaries along the axis. A driving arrangement, at an axial location between the first and second tools, supports the first and second tools for rotation and transfers driving force. A radially outer periphery of the driving arrangement is at a radius less than a radius of a peripheral cutting edge portion of the first tool and less than a radius of a peripheral cutting edge portion of the second tool.

Abstract: Working tool and machine for sawing or cutting, comprising an annular blade (2) intended to be rotated about an axis of rotation, encircling said axis of rotation, the annular blade comprising an annular blank (3; 3?) and means (15), e.g. diamond segments (15), forming the working part of the tool and provided in connection to an outer edge (31) of the blank (3; 3?), said blade and blank also having an inner edge (19), an inner edge portion (18) comprising driving surfaces for rotation of the tool about said axis of rotation, and a web portion (23) between said outer edge (31) of the blank and said inner edge (portion) (18), said web portion having a first side (24) and a second side (27).

Abstract: A rotatable cutting tool unit of a tool assembly for a cutting machine that is used in conjunction with an associated method of cutting provides several novel aspects. The tool arrangement, which includes two tool units, includes first and second disk-shaped tools rotatable about an axis. The tools define maximum tool arrangement boundaries along the axis. A driving arrangement, at an axial location between the first and second tools, supports the first and second tools for rotation and transfers driving force. A radially outer periphery of the driving arrangement is at a radius less than a radius of a peripheral cutting edge portion of the first tool and less than a radius of a peripheral cutting edge portion of the second tool.

Abstract: A saw blade (1) intended for a handheld working tool, and the saw blade comprises a blade body (2) having an outer periphery (3) with a number of teeth (4) arranged by fastening a separate part or through a local addition of a surface lining material. The teeth occupy less than 0,2 times of the periphery (3) of the saw blade and in that rotation-wise in front of at least a tooth (4) there is a notch (5) that runs towards the center of the saw blade and this notch has a narrow opening (6) at the periphery and preferably widens considerably inside the opening to a widened part (7) and the widened part has a width (b) that is greater than 1,3 times the width (a) of the opening.

Abstract: A portable motor chain saw comprises a machine body (1) which a driving unit, a rear handle (2), a front handle which extends over the machine body, a guide bar (6), and a dog device (15) provided such that it can be pressed against the object to be worked by means of the machine, said dog device forming a center of rotation for turning the guide bar in the plane of the guide bar. The characterising features are that the dog member (15) is provided in front of the front handle (3), approximately on a level with that part (4) of the front handle which extends over the machine body, and is connected to the front handle, and that at least that part of the dog device which is provided to engage the object to be worked, consists of a polymeric material. Preferably, the height of the dog device over the guide bar corresponds to two to three times the vertical width of the guide bar.

Abstract: The invention concerns a motor powered saw with a saw chain (2) and a guide bar (1), the rear portion of which is covered by a side cover (3) and during operation clamped with a certain clamping force between the side cover and a counter support on that side of the guide bar which is turned towards the motor, tensioning elements being provided for tensioning the saw chain by displacing the guide bar forwards, when the guide bar has been loosened by easing the clamping force, and elements for securing the guide bar in a new position.

Abstract: The invention concerns a motor powered saw with a saw chain (2) and a guide bar (1), the rear portion of which is covered by a side cover (3) and during operation clamped with a certain clamping force between the side cover and a counter support on that side of the guide bar which is turned towards the motor, tensioning elements being provided for tensioning the saw chain by displacing the guide bar forwards, when the guide bar has been loosened by easing the clamping force, and elements for securing the guide bar in a new position.

Abstract: A portable motor chain saw comprises a machine body (1) which a driving unit, a rear handle (2), a front handle which extends over the machine body, a guide bar (6), and a dog device (15) provided such that it can be pressed against the object to be worked by means of the machine, said dog device forming a centre of rotation for turning the guide bar in the plane of the guide bar. The characterising features are that the dog member (15) is provided in front of the front handle (3), approximately on a level with that part (4) of the front handle which extends over the machine body, and is connected to the front handle, and that at least that part of the dog device which is provided to engage the object to be worked, consists of a polymeric material. Preferably, the height of the dog device over the guide bar corresponds to two to three times the vertical width of the guide bar.

Abstract: The invention concerns a portable cutting machine (1), comprising a cutter unit (3) with a rotatable cutter member (4) in the form of a cutter disc or a saw disc, a cutter shaft for the rotation of the cutter member, a guard in the form of a protective housing (11) for said cutter member, at least one water nozzle (12) provided in the protective housing for the generation of one or more water jets in the space defined by the protective housing, said one or more water jets essentially laying the dust which is generated during the cutting operation and cooling the cutter member, the machine further comprising a power unit (2) and a first power transmission (7) between the power unit and the cutter shaft.