Abstract: A locking mechanism for use on a support winch includes a stator unit, a rotor unit and a locking unit, wherein the rotor unit has a shaft element and a crank element, wherein the crank element is pivotably arranged in relation to the shaft element, wherein the shaft element is rotatably mounted about a rotation axis, and secured to prevent displacement transverse to the rotation axis relative to the stator unit, wherein the locking unit secures the crank element in a first axial position when the crank element is in an idle position to prevent displacement along the rotation axis in at least one direction, and wherein the locking unit secures the crank element to prevent swiveling movement relative to the shaft element when the crank element is in an operating position.

Abstract: A locking mechanism for use on a support winch includes a stator unit, a rotor unit and a locking unit, wherein the rotor unit has a shaft element and a crank element, wherein the crank element is pivotably arranged in relation to the shaft element, wherein the shaft element is rotatably mounted about a rotation axis, and secured to prevent displacement transverse to the rotation axis relative to the stator unit, wherein the locking unit secures the crank element in a first axial position when the crank element is in an idle position to prevent displacement along the rotation axis in at least one direction, and wherein the locking unit secures the crank element to prevent swiveling movement relative to the shaft element when the crank element is in an operating position.

Abstract: A heat exchanger with a plurality of stacked flat tubes and a collecting tank having a wall extending around the entire periphery of, and connected to, the end of the stacked flat tubes. A first medium may be distributed through the collecting tank and flat tubes. Internal inserts are in the flat tubes, with the inserts being bonded between the broad sides of the tubes and, in the region of connection of the tubes to the collecting tank, being configured to compensate for length changes in the stacking direction caused by temperature changes, as by recesses in connectors such as wave flanks or by corrugated wave flanks. The flat tubes with inserts such as described may be separately provided for use in manufacture of heat exchangers.