Abstract: The present invention relates to a coupling (1) for a ship propulsion system to be arranged between a first shaft section (3) and a second shaft section (5) of a propeller shaft, comprising a first radial surface (17) facing a second radial surface (19), said first and second radial surfaces (17, 19) are transversal to the axial extension of the first and second shaft section (3, 5), wherein said first and second radial surfaces (17, 19) are connectable into an axially engaged condition and disconnectable into an axially disengaged condition, wherein said first and second radial surfaces (17, 19) are rotationally secured relative to each other in said axially engaged condition by means of at least one shear-carrying element (27) seated in opposite recesses (23, 25) arranged in the first radial surface (17) and the second radial surface (19), respectively, taking up shear forces directed substantially parallel to said first and second radial surfaces (17, 19), each of said opposite recesses (23, 25) comprises

Abstract: The present invention relates to a coupling (1) for a ship propulsion system to be arranged between a first shaft section (3) and a second shaft section (5) of a propeller shaft, comprising a first radial surface (17) facing a second radial surface (19), said first and second radial surfaces (17, 19) are transversal to the axial extension of the first and second shaft section (3, 5), wherein said first and second radial surfaces (17, 19) are connectable into an axially engaged condition and disconnectable into an axially disengaged condition, wherein said first and second radial surfaces (17, 19) are rotationally secured relative to each other in said axially engaged condition by means of at least one shear-carrying element (27) seated in opposite recesses (23, 25) arranged in the first radial surface (17) and the second radial surface (19), respectively, taking up shear forces directed substantially parallel to said first and second radial surfaces (17, 19), each of said opposite recesses (23, 25) comprises

Abstract: The present invention relates to thermosyphons, in particular for use in the cooling of electronic components. In a first embodiment a thermosyphon is manufactured by extruding a base (1) and milling a channel structure in the base to produce a plurality of fins (5) extending vertically from the base. A lid (3) comprising a number of fins (4) extending vertically from the lid is placed over the heat sink channel structure so that a thermosyphon of an expanding channel system is formed. In a second embodiment the evaporator and condenser sections are separated and connected by pipes. To form a leak proof seal between the lid and the base, joining is preferably done by friction stir welding. By providing an extruded thermosyphon, heat transfer is made more efficient than when junctions are used. The present invention provides a new way of efficiently manufacturing an integrated structure, while keeping the heat transfer of the structure high.

Abstract: An elongated, electrically conductive diaphragm is placed in a strongly magnetic field to produce a linear and an elongated sound source giving a high sound energy. At least two elongated diaphragms are positioned between intermediate and enclosing protected magnet elements, whereby the transverse length of the diaphragms are at least of the same size as that of the intermediate protected magnet elements. In this way, a sound without considerable interference merges at a short distance from the sources of the sound. By placing additional such sources of sound alongside each other, a broad sound source with a surface producing an essentially homogeneous sound field is achieved.