Patent ID: 7261639

Claim:
A device mountable on a golf club having a shaft with oppositely-disposed first and second ends, a grip at the first end of the shaft, and a head at the second end of the shaft, the grip having a first grip portion and a second grip portion located closer to the second end of the shaft than the first grip portion, the grip being tapered so that the second grip portion has a smaller diameter than the first grip portion, the device comprising: a toroid-shaped body having an axis and a substantially uniform thickness in an axial direction of the body; an opening in the body, coinciding with the axis of the body, and defining an inner perimeter of the body concentric with the axis of the body, the opening having a minimum dimension larger than the diameter of the second grip portion of the grip but smaller than the diameter of the first grip portion of the grip so that the body is prevented from being removed from the club over the first grip portion; an outer perimeter spaced radially outward from and surrounding the inner perimeter and concentric with the axis of the body, the outer perimeter having a recess defined therein that is sized and contoured to accommodate a portion of a hand gripping the second grip portion of the grip, aside from the recess the outer perimeter being substantially uniformly spaced radially outward from the inner perimeter; and a slot in the body and extending between the inner and outer perimeters thereof, the slot having a maximum width greater than the diameter of the shaft to permit installation of the body on the golf club; wherein the device weighs less than one ounce so as not to detrimentally affect swinging of the golf club.