Patent ID: 6904888

Claim:
A reciprocating piston device comprising: a piston-cylinder assembly having at least four cylinders and at least one case, each of said cylinders having one piston, each of said cylinder and its said piston having a common axis; an oscillating intermediate shaft having a rotational axis, said shaft kinematically connected to said pistons; a crankshaft having one crank and carrying an element transmitting rotation between said crankshaft and an adjacent device, said crankshaft kinematically connected to said intermediate shaft; at least one primary transmission mechanism connecting said pistons and said intermediate shaft, each of said primary transmission mechanisms and the pistons connected to it being housed in one separate case section; and a secondary transmission mechanism connecting said intermediate shaft and said crankshaft, said secondary transmission mechanism being housed in another one separate case section having a chamber, said chamber having an opening closed by a cover.