Patent ID: 7618328
Filing Date: 2009-11-17
Classification: A63B

Abstract:
1. A swing training device comprising: a shaft having an upper end and a lower end; a grip provided at said upper end of said shaft; a weight member slidably mounted on said shaft for sliding the weight along the shaft during rotational swinging of the swing training device; an upper stop on said shaft, said upper stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said upper end; a lower stop on said shaft, said lower stop having a diameter greater than a shaft diameter for preventing said weight from sliding on said shaft past said lower end; and a friction adjustment member provided on said weight member for altering an amount of dynamic friction between said shaft and said weight member; said shaft having a substantially constant cross section along a substantial portion of its length between said upper stop and said lower stop to provide a substantially constant amount of dynamic friction between said weight member and said shaft; wherein the shaft and the weight member are configured such that the amount of dynamic friction between said weight member and said shaft is sufficient along the shaft between the upper stop and the lower stop such that the weight slides along the shaft the weight and stops before striking the lower stop when an insufficient swing speed is applied to the swing trainer and such that the weight slides along the shaft and strikes the lower stop when a sufficient swing speed is applied to the swing trainer.