US Patent 7775890 Flexible drivetrain having axial and radial motion limiter

A drivetrain for use with a power unit is disclosed. The drivetrain may have a crankshaft, a flywheel having spline teeth, and a flexible plate connecting the crankshaft to the flywheel. The drivetrain may also have a driven member having spline teeth configured to mate with the spline teeth of the flywheel, and a limiter associated with at least one of the flywheel and the driven member. The limiter may be configured to limit a maximum axial movement and a maximum radial movement between the flywheel and the driven member.