Invented by Dr. Nicholas A. Sanders, the recently patented Tangent Drive(TM) mechanism realizes an energy efficiency increase upwards of 25% when replacing a crankshaft in any reciprocating system, including engines, compressors, generators, and pumps. It is a purely mechanical invention that allows for a 1-to-1 replacement of the Crankshaft. Please view the video describing the mechanism and illustrating its functionality on a small table-top model.