Infinitely variable friction gear

Continuously variable friction gear having:

• one housing,
• one input shaft,
• one torque shaft positioned coaxially in relation thereto,
• two input discs with toroidal inner surfaces coaxially disposed relative to the input shaft,
• two output discs with toroidal surfaces coaxially disposed relative to the input shaft,
• each input disc and each output disc forming one pair and both output discs being disposed with mirror symmetry and side by side,
• several friction wheels turnably disposed between the inner surfaces of the pairs of input discs and output discs for transmitting a torque from said input disc to the appertaining output disc,
• one carrier for each friction wheel,
• one pivoting device for the carriers of the friction wheels,
• one pressure arrangement for one of the input discs to energize it in direction to the output discs,
• one output shaft and
• one gear wheel arrangement between output discs and input shaft, characterized in that said friction wheels (1) are turnably supported in combined axial-radial bearings (2) which consist of split bearings (3) which are inserted in said carriers (4) and rotated about a preset pivot angle (α) relative to the Y axis, that said carriers (4) facing each other of each gear unit are interconnected by an upper coupling rod and a lower coupling beam (7) and that said lower coupling beam (7) is axially supported (10) on the housing for the hydraulic pistons (5).