Abstract: A mounting system for rotating tools such as grinding wheels in a hand-held power tool, includes a hub mountable to the tool drive shaft and a rotating tool element removably affixable to the hub. The tool has at least one flange that engages a corresponding circumferential groove in a hub wall. Both the hub and tool have complimentary lock elements to frictionally retain the tool in a releasably fixed orientation upon the hub. One of the lock elements is in the form of a depression, while a mating element located on the other ports is a complimentary projection.

Abstract: A cutting tool in which a disc-like cutter blade is fixed to a spindle of a rotary electric tool, comprising a first guide plate, which is attached on electric tool side to a cutter blade such that it is capable of rotating freely and makes contact with the reference surface of a cutting object material on a process of cutting progress so as to guide along a cutting direction, an inner flange located between the first guide plate and the cutter blade so as to specify a distance X from the reference surface of the cutting object material to a cut groove and a second guide plate which is provided on an opposite side to the electric tool side of the cutter blade and makes contact with a cut face of the cutting object material on a process of the cutting progress so as to stop moving in the cutting direction to specify a cut groove depth Y.

Abstract: A height adjustment mechanism for varying the positioning of a rotating tool on a haft of a machine tool, such as a portable power tool, is in the form of a coupler between the blade and tool arbor. A head of the coupler accepts the tool and connects with a tool drive, the depth of the connection defining the working height or position of the tool. A pair of inter-engaged flanges are mounted upon the shaft of the coupler head, and apply forces to the coupler head and tool drive to maintain the connection depth therebetween and to retain the tool in position. A jam nut further maintains the relative orientation of the flanges.

Abstract: A blade-mounting adaptor for a power tool has a blade-mounting stud on which the blade is mounted at a first end. The blade is mounted upon the stud in a manner such that it is capable of axial motion along the length of the stud when exertion is applied to the blade. The blade is provided with an adjustable pre-set bias force against the axial motion.

Abstract: A constant angular grinding tool comprising: a profile wheel whose grinding face is fixed at an inclination angle with respect to the axis of a spindle of a rotary electric tool; a first guide plate which is a disc member attached rotatably to a spindle between the profile wheel and the rotary electric tool so as to guide for a grinding direction by bringing the edge of the disc member into a contact with the reference level of a material; and a second guide plate which is a disc member attached rotatably to a spindle between the profile wheel and the first guide plate and whose outer peripheral end face makes contact with the edge of the material to control a grinding distance from the edge.

Abstract: A pair of profile wheels 14, 18 in which concavely shaped grinding surfaces 141, 181 asymmetrical to each other are opposed to each other at right angle so as to form a concavely shaped grinding surface having a substantially semi-circular section, a guide plate 13 which is mounted on a spindle 11 of an electric or air tool side of the profile wheel 14 freely rotatably for guiding a grinding direction by bringing the edge of the circular shaped member into contact with a reference face of a grinding object material and a stopper ring 16 which is mounted to a spindle between the pair of the profile wheels 14 and 18 freely rotatably for controlling a grinding distance Y from the edge by bringing its outer peripheral end face 161 into contact with the edge of the grinding object material, are fixed to the spindle 11 with a lock nut such that they are set at right angle to the spindle.

Abstract: A pair of profile wheels 14, 18 in which concavely shaped grinding surfaces 141, 181 asymmetrical to each other are opposed to each other at right angle so as to form a concavely shaped grinding surface having a substantially semi-circular section, a guide plate 13 which is mounted on a spindle 11 of an electric or air tool side of the profile wheel 14 freely rotatably for guiding a grinding direction by bringing the edge of the circular shaped member into contact with a reference face of a grinding object material and a stopper ring 16 which is mounted to a spindle between the pair of the profile wheels 14 and 18 freely rotatably for controlling a grinding distance Y from the edge by bringing its outer peripheral end face 161 into contact with the edge of the grinding object material, are fixed to the spindle 11 with a lock nut such that they are set at right angle to the spindle.

Abstract: A constant angular grinding tool comprising: a profile wheel 18 whose grinding face 181 is fixed at an inclination angle X with respect to the axis of a spindle of a rotary electric tool; a first guide plate 13 which is a disc member attached rotatably to a spindle between the profile wheel 18 and the rotary electric tool so as to guide for a grinding direction by bringing the edge of the disc member into a contact with the reference level of a material; and a second guide plate 16 which is a disc member attached rotatably to a spindle between the profile wheel 18 and the first guide plate and whose outer peripheral end face makes contact with the edge of the material to control a grinding distance Y from the edge.

Abstract: A cutting tool in which a disc-like cutter blade 15 is fixed to a spindle 11 of a rotary electric tool, comprising a first guide plate 13, which is attached on electric tool side to a cutter blade 15 such that it is capable of rotating freely and makes contact with the reference surface of a cutting object material on a process of cutting progress so as to guide along a cutting direction, an inner flange 14 located between the first guide plate 13 and the cutter blade 15 so as to specify a distance X from the reference surface 75 of the cutting object material 70 to a cut groove 72 and a second guide plate 17 which is provided on an opposite side to the electric tool side of the cutter blade 15 and makes contact with a cut face 75 of the cutting object material 70 on a process of the cutting progress so as to stop moving in the cutting direction to specify a cut groove depth Y.

Abstract: A glass sheet cutting tool prevents wasted lubrication and includes a cutting section, an oil introduction section and an oil storage section established along a common line. An open section and an opening and closing tap section are established along another common line that orthogonally crosses the first.