Abstract: The (VDS·CVT) is a continuously variable transmission. This mechanism consists of two sets variable diameter shaft, one sun gear set. On each shaft sets are mounted a number of the guide rods on shafts, some movable sets that any of them placed on each pair guide rods, two guide disks with some curve grooves on surface, by rotation of disks, the diameters of shaft will be changes. Variation's diameters in two shaft sets are Continuous. The variations ratio of the rotational speed between two shaft sets are continuous. Secondary shaft connected with one components of sun gear set, and second component of sun gear set connected with input shaft and third component of sun gear set connected with output shaft. Because the variations of the rotational speed on the secondary shaft is continuous, the variations of the rotational speed on the output shaft will be continuously.

Abstract: A geared continuously variable transmission (GCVT) is provided. The GCVT includes a first set of solar gears having a first solar gear and first plurality of connection components. Power enters the GCVT through the first set of solar gears. The GCVT includes a second set of solar gears having a second solar gear and second plurality of connection components. Power exits the GCVT through the second set of solar gears. Power is transmitted from the first set of solar gears to the second set of solar gears via the first plurality of connection components and the second plurality of connection components. The GCVT includes a hydraulic pump and a hydraulic motor connecting first component from the first plurality of connection components to second component from the second plurality of connection components and providing constant rotation ratio between the first component and the second component.

Abstract: A geared continuously variable transmission (GCVT) is provided. The GCVT includes a first set of solar gears having a first solar gear and first plurality of connection components. Power enters the GCVT through the first set of solar gears. The GCVT includes a second set of solar gears having a second solar gear and second plurality of connection components. Power exits the GCVT through the second set of solar gears. Power is transmitted from the first set of solar gears to the second set of solar gears via the first plurality of connection components and the second plurality of connection components. The GCVT includes a hydraulic pump and a hydraulic motor connecting first component from the first plurality of connection components to second component from the second plurality of connection components and providing constant rotation ratio between the first component and the second component.