US Patent 7815529 Adjustable golf tee assembly

An adjustable golf tee assembly includes a golf tee, which has a plurality of positioning portions formed in the periphery of a shank thereof at different elevations, an elastically deformable tee holder having an upright stub tube perpendicularly upwardly extending from a flat base thereof and a center through hole cut through top and bottom sides of the flat base and surrounded by the upright stub tube and a positioning portion formed on the inside wall of the upright stub tube for engagement with one of the positioning portions of the golf tee selectively, and a locating ring for sleeving onto the upright stub tube of the tee holder to lock the golf tee and the tee holder.