Patent ID: 8985071
Filing Date: 2015-03-24
Classification: F01B,F02B

Abstract:
1. A horizontally opposed engine that uses a stepped piston assembly in which two stepped pistons are connected via a central shaft device comprising: a central shaft that is free to rotate at its central axis at all times, and translates linear motion into rotational energy by an overrunning clutch transitorily fixing a position of one half of the central shaft followed by the transfer of energy to dual cam-followers acting on dual spiral high lead slotted cam screws that permit a thick-wall tube to rotate; which then creates a toothed gear wheel on its axis to transmit its rotation to a transmission; whereupon the overrunning clutch releases its fixation; wherein the stepped piston is two pistons in one disposed in different sized cylinders having their own intake and exhaust valves and spark plugs.