Abstract: The invention relates to a stop valve (1, 1?, 1?) for a portable pressurized-gas container (35). A valve body (2) is provided with three connection adapters (7, 17, 18), i.e. one central connection adapter as a gas tank connection adapter (7), another connection adapter as outlet connection adapter (17) and a third connection adapter as spindle drive receiving adapter (18). Valve body (2) is made in several parts including valve body element (3) with the outlet connection adapter (17) and a spindle drive receiving adapter (18) and a radial valve seat element receiving bore (20) going to the bottom of the spindle drive receiving adapter (18). Furthermore, the valve body (2) has an oblong valve seat element (5) with gas supply bore (29) provided at the one end of the valve seat (30) and a bearing collar (26) on the other end. In its assembled state, the valve seat element (5) is inserted tightly into the radial bolt receiving bore (20).

Abstract: A power-driven tool for cleaning insulation and corrosion from conductors is portable and applies a controlled pressure established by hand. The tool employs a motor-driven abrasive drum and a pressure pad movable toward and away from the abrasive drum, with the conductor being squeezed between the pad and the drum during operation. A control for the motor is activated by the motion of the pressure pad toward the drum beyond a preestablished point, and an adjustable stop estalishes a minimum spacing between the pressure pad and the abrasive drum. A shroud covers the drum at all points except for an exposed area between the drum and the pressure pad, and a bias spring urges the pressure pad away from the drum to stop the motor upon release by the operator.