Patent ID: 7585228

Claim:
A golf swing plane training device for developing a correct swing plane by constraining and controlling the swing arc of a golf club shaft when swung by the user, the device comprising: an upright support frame; a rotation control assembly mounted proximate the top of the upright support frame and having a rotatable hub defining a swing plane axis of rotation during the swing and being pivotably mounted for pivoting of the swing plane axis of rotation a plane of inclination which is selected and fixed before the swing; a swing plane guide having a swing arm connected proximate one end to and rotatable with the hub about the swing plane axis of rotation, and having a radius adjustment assembly affixed to a distal end of the swing arm; the radius adjustment assembly comprising a linear motion assembly and a universal pivoting assembly connected to the linear motion assembly; the linear motion assembly defining a linear slide axis at an angle perpendicular to the swing plane axis of rotation and having a slide member slidable along the linear slide axis thereby allowing radial sliding during the swing, the universal pivoting assembly being connected to the slide member for sliding along the linear slide axis during the swing and having an attachment element for slidable attachment to the shaft of a training or simulated golf club and for universal pivoting with respect to the slide member for sliding along the shaft during the swing; whereby when a user swings a training or simulated golf club it is constrained and controlled to travel in a swing pattern defined and allowed by the swing arm and the radius adjustment assembly.