Patent ID: 7669498

Claim:
A transmission system, comprising: two or more independent chambers, in each of which a plurality of shafts are provided for rolling in synchronous motion; each of the shafts having at least a gear, and a carrier having a plurality of adjustable gear devices on a bottom thereof; each of the adjustable gear devices having a base, a movable rack member, vertical springs and horizontal springs, wherein the movable rack member is connected to the base to be moved along a horizontal direction, and the vertical springs are provided between the base and the carrier to urge the adjustable gear device along a vertical direction and to keep the base away from the carrier for a predetermined distance, and the horizontal springs are provided between the base and the movable rack member to urge the movable rack member along the horizontal direction for return of the movable rack member; the movable rack member of the adjustable gear device having a rack portion to be meshed with the gears of the shafts, such that the carrier is moved by the gears to cross the chambers, wherein a movement of the movable rack member along the horizontal direction provides the rack portion a tolerance to be meshed with the gear in the next chamber, and a movement of the movable rack member along the vertical direction provides the rack portion to be meshed with the gears in the next chamber while there is a height difference between the gears in the neighboring chambers, wherein the bases of the adjustable gear devices are provided with a block respectively, and the movable rack members of the adjustable gear devices are provided with a slot respectively to receive the blocks therein respectively, wherein a length of the slot along the horizontal direction is larger than that of the block.