Abstract: The present invention relates to a tool for pipe bending comprising at least two branches (1, 3), at least one link arm (8), at least one former (7), and at least one sliding jaw (9), said at least one former (7) and said at least one sliding jaw (9) being intended to be placed on either side of a pipe (12) to be bent, and said at least one former (7) being fitted to, or constituting a part of, a first branch (1) of said at least two branches (1, 3) at the same time as said at least one sliding jaw (9) being fitted to, or constituting a part of, a second branch (3) of said at least two branches (1, 3). At least one of said at least one former (7) has at least one pipe-positioning index (18, 19), one of which is intended to be placed as close as possible to a corresponding bending-measure index on the pipe (12) when the pipe (12) is placed in the tool in order to be bent. The present invention also relates to a former (7) for use as a part of a tool for pipe bending.

Abstract: The invention relates to a handle (1) for a cleaning device. Said handle comprises at least one handle base (2) having at least one convex first handle section (3) and, axially adjacent to the first handle section, at least one concave second handle section (4). The invention is characterized in that the first handle section has a higher coefficient of static friction than the second handle section.

Abstract: A hammer, preferably a workshop hammer including a head and an adjoining handle. The head is provided with at least one impact surface and a cavity which is at least partly filled with particulate material so as to dampen the recoil of the hammer. The hammer reduces recoil, rotation, and vibration of the hammer whereby an ergonomic hammer is obtained. The hammer is provided with a rigid longitudinally extending element in the handle and a counterweight at a free end thereof.

Abstract: Method and apparatus for a mainly temporary ventilation of a room. A fan blows air from the room through an inflatable balloon, being placed in a permanent opening, e.g. a window, in a wall limiting the room. The balloon is provided with at least one exhaust opening being dimensioned so that an overpressure is built up inside the balloon sufficient to keep the balloon inflated and in abutment with the limitations of the opening.