Patent ID: 7381143

Claim:
A transmission apparatus comprising: a first rotatable member comprising a first rotatable shaft and at least one first rotatable element operatively attached to the first rotatable shaft; a second rotatable member comprising a second rotatable shaft arranged in parallel with said first rotatable shaft, said second rotatable member further comprising a plurality of second rotatable elements operatively attached to said second rotatable shaft, said rotatable elements being greater in number than the number of rotatable elements of said first rotatable member; a slide mechanism arranged between said first rotatable shaft and said first rotatable member enabling said first rotatable member to be moved axially relative to its rotating center line, wherein said slide mechanism comprises an inner sleeve, an outer sleeve coaxially surrounding said inner sleeve, and a plurality of bearing elements disposed between said inner and outer sleeves; an endless linking loop interconnecting said first rotatable member and said second rotatable member to transmit rotation therebetween; and a gear shift mechanism for positioning said endless transmission linking loop among said predetermined number of said second rotatable elements for a transmission operation; wherein said endless linking loop is applied over said first rotatable member and said second rotatable member in parallel with a plane crossing a center line of said first rotatable shaft at a right angle.