Transmission utilizing hypocycloid motion

A transmission system for transmitting a rotary motion input to a rotary motion output, the system comprising:

• an input mechanism comprising a rotary input cam rotationally fixed to at least one roller proximate a periphery thereof, a substantially cylindrical hub, a plurality of arcuate linkages each pivotally fixed at each end thereof to an adjacent arcuate linkage and a first end of a linear displacement linkage, each of the at least one rollers capturing at least one arcuate linkage against an inside surface of the cylindrical hub, each linear displacement linkage pivotally fixed at a second end to a plunger means;
• at least one hydraulic transmission means, each hydraulic transmission means including a plurality of input bladders, each input bladder cooperating with one of the plunger means of the input mechanism, each bladder in fluid communication with an output bladder, each hydraulic transmission means substantially filled with a generally non-compressible fluid;
• an output mechanism comprising a substantially hollow enclosure capturing a substantially circular outer ring that captures a substantially circular middle ring having a circular opening therein that is offset from the center thereof, the circular opening in the middle ring rotationally capturing an inner ring having an aperture proximate a peripheral edge thereof, the aperture for rotationally capturing an crankshaft at one end, a second end of the crankshaft rotationally fixed to a center aperture of the enclosure and forming the rotary motion output;
• and
• an output bladder linkage cooperating with the output bladder of each hydraulic transmission means for conveying synchronized reciprocal motion of each output bladder to the outer ring of the output mechanism;
• whereby when the rotary motion input is applied to the rotary input cam of the input mechanism, each of the at least one rollers in turn depresses each linear displacement linkage, the plurality of arcuate linkages each lifting each linear displacement linkage once the roller has passed thereby, each linear displacement linkage actuating one of the plunger means to compress one of the input bladders, thereby expanding one of the output bladders thereof, each output bladder coupled through the output bladder linkage to reciprocate the outer ring of the output mechanism within the enclosure, the inner ring following inverse hypocycloid motion with two cusps to rotate the crankshaft around the center aperture of the enclosure to produce the rotary motion output.