Adjustable golf putter

#Provisional applications 60-033365, 60-033189, 60-047313, 60-063007 and 60-065639 are incorporated herein by reference.

#1. Field of Invention

#This invention relates generally to golf clubs and more particularly to a lie adjustable golf putter and a putter head with a dual curvature face.

#FIG. 1 shows a side view of the preferred embodiment of the putter head.

#FIG. 2 shows a back view of the preferred embodiment of the putter head.

#FIG. 3 shows a view of a inner face of the preferred embodiment of the adjustment means.

#FIGS. 1-6 illustrate the preferred embodiment of the present invention. A golf putter 103 having adjustable capabilities, comprising a putter head 100 having a top surface 1, a bottom surface 2, a front planar surface 3 and a rear planar surface 4. The top surface 1 is generally parallel to the bottom surface 2 and the front planar surface 3 is generally parallel to the rear planar surface 4. The front and rear planar surfaces 3 and 4 are perpendicular to the top and bottom surfaces 1 and 2. The putter head 100 further having an outer forward portion generally known as the toe 5 and inner portion generally known as the heel 6 and all the surfaces 1, 2, 3 and 4 extend from heel 6 to toe 5. Also, as shown in FIG. 1, the putter head 100 is slightly rounded where the bottom surface 2 intersects with front planar surface 3.

#The putter head 100 is constructed to have a striking surface 7 on the front planar surface 3 which forms an angle A1 of approximately three degrees with respect to the front planar surface 3. A rear surface 8 is formed opposite the striking surface 7 by a rear planar cut C1 with a rear angle A2 of thirty five degrees with respect to the rear planar surface 4. It should be noted that the angles of the striking surface 7 and the rear surface 8 are not a limitation of the invention. A rear side cavity 44 is formed into the rear surface 8 of the putter head 100 and is of a symmetrical shape with respect to a vertical axis. The cavity 44 is formed at the midpoint of the putter head 100 wherein the midpoint of the cavity 44 is aligned with the midpoint of the putter head 100. The cavity 44 alters the aesthetic value and distributes the putter head's 100 weight to the outside of the "sweet spot." It should be noted that the shape, size and location of the cavity 44 is for cosmetics and not a limitation.

#A circular pocket 9 having a radius R1 and depth D1 for receiving an adjustment means H1, is formed at the striking surface 7 near the heel 6. The depth D1 is depressed horizontally on the striking surface 7. A step S1 protrudes from a back wall 10 of the pocket 9. The step S1 extends outwards, towards the striking surface 7, in a horizontal manner having an outer face 11 and an upper face 12 which are perpendicular to each other. The outer face 11 is parallel to the front planar surface 3 and extends upward generally half the radius R1 of the circular pocket 9 from circumference of the circular pocket 9. The upper face 12 is parallel to the bottom surface 2 and extends outward generally half the depth D1 of the circular pocket 9 from the back wall 10. A significant advantage is achieved by providing the extension of the upper face 12 such that the rotation of adjustment means is automatically limited to be within the specification of the major golf associates. A threaded axle hole 13, to receive an axle bolt 14, is formed at the back wall 10 of the circular pocket 9. A U-shaped opening 15 is formed for receiving a pole 16 of the adjustment means H1 is formed at the top surface 1 extending downward into the circular pocket 9. The distance between the walls 17 and 18 of the U-shaped opening 15 is sized to limit the rotation of the pole 16 to seven degrees in either direction from a vertical position. This is a significant aspect of the invention, because the user is automatically limited to be within the specifications of the USGA. The present embodiment utilizes a pre-bent shaft. It should be noted, however, that the limiting walls 17 and 18 of the U-shaped opening 15 may vary in their position and nature relative to different types of golf shafts so that the invention may remain within the specifications of the USGA. The connection between a shaft 98 and the adjustment means H1 is such that the pole 16 of adjustment means H1 is inserted into the hollowing of the shaft 98.