Abstract: A power branching spur gear system has two main wheels which come into contact with one another through more than three intermediate wheels. Each intermediate wheel meshes with both main wheels, and every two intermediate wheels are disposed at a bearing element which is linked to a linking point which is non-coincident with the bearings of the intermediate wheels. The linking points of the bearing elements are directly or indirectly connected to one another by coupling members. The linking point of at least one bearing element is positioned in a scissor-shaped area, which is formed by the two resultant bearing forces of the two intermediate wheels which are disposed on the bearing element and in which the resultant of both bearing forces lies. The intermediate wheels exercise equidirectional torques on each main wheel.

Abstract: A coupling which is switched dependent on the rotational speed. One coupling half is held in fixed relationship with another coupling half up to a switching speed while being supported on switching elements. These elements are centrifugally controlled and spring loaded, and they are pivoted and coupled to one another by a switching ring for joint tilting. One coupling half is supported, furthermore, on the switching element by a ring which is elastic in axial direction.