Patent ID: 6938590
Filing Date: 2005-09-06
Classification: F02B,F04B

Abstract:
1. A method of lubricating an internal combustion motor having reciprocating pistons in a rotating cylinder block, the pistons being connected to a roller that pushes against an inclined surface on a stationary guide track fastened to a motor housing in order to cause the cylinder block and pistons to rotate about a rotational axis, the drive track having a cylindrical bearing surface that encircles a drive shaft that rotates about the rotational axis, the piston having a curved bearing surface abutting the cylindrical bearing surface comprising: forming a lubricant passage along the rotational axis and forming outwardly extending fluid passages in the drive shaft which place the lubricant along the rotational axis in fluid communication with at least one location on the exterior of the drive shaft but inside the motor; placing the at least one location in fluid communication with a piston fluid passageway extending through the piston to an inner surface where the piston bearing surface abuts the cylindrical bearing surface.