Patent ID: 8257184

Claim:
A driveline coupler for an irrigation system comprising: a first arm to connect to a shaft of a gearbox or motor; a second arm to connect to a drive shaft; a puck that engages the first and second arms to transmit a torque between them; and a center pin, wherein the center pin passes through a central axis of the puck and aligns the puck with at least one of either the first or second arm; the second arm comprising: a base member having a first end that engages the puck and a second end that extends therefrom for engagement with the drive shaft; and a securing member attached to the second end of the base member but not the puck, the securing member having a surface to engage a portion of an end of the drive shaft opposite from the base member and to secure the drive shaft to the second end of the base member, the base member and securing member are adjustable with respect to one another without adjusting the engagement between the second arm and the puck and thereby permitting the base member and securing member to engage different sized drive shafts, wherein the securing member and base member act together to accommodate and automatically center different sized drive shafts wherein the ends of the drive shafts have the same geometric cross sectional shape.