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Weight interchangeable putterRelated Patent Categories: Games Using Tangible Projectile, Golf, Club Or Club Support, Head, PutterWeight interchangeable putter description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070021235, Weight interchangeable putter. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] A. Field of the Invention [0002] The present invention relates to golf putters, and more particularly to a weight interchangeable putter structure. [0003] B. Description of the Prior Art [0004] Golf requires delicate control of a small 45-gram golf ball over a long distances with only a number of golf clubs. Golf becomes a precision game won by the player with the least total strokes. The golf club generally consists of a grip, a shaft and a head and is categorized into woods, irons and putters. Woods or irons are the suitable clubs for long distance shots while the putter is for green putting over most preferably one or two relatively short green distances. [0005] Typically, the putter head is designed to have an almost perpendicular clubface to the playing ground with a loft angle necessary to roll the ball. The shaft of the putter is distinctive from the other clubs in that it extends more upright from the head or has a higher lie angle allowing the player to better see the line of putting otherwise visible only by bending forward. The correct use of the putter is a two handed grip with no motion along the wrists and the arms, which in unity should make a pendulum motion sideways resulting in the ball rolling over a distance determined by the gripping force of the hands and the extent of backstroke. Specifically for short putting, wrist or fingers should not be involved in the controlling forces. [0006] With the well known basics of putting in mind, golfers practice for lengthy periods of time to attain their own personal way of putting. Because putting is done by imperfect humans with varying psychological and physical states of the day, golfing performance can also fluctuate. In addition, individual peculiarity or habit of ball striking inevitably develops to lead the ball to all but the desired direction and speed. Golfers unknowingly adopt putting with overly short or long grips, bent posture or a straight waist becomes natural habits. To inhibit such habits, many golfers just repeat to practice countless times following same putting tips out of standard manual, which in reality can not be applied literally to various individuals of different characteristics. It would be rational to develop one's physical condition or the habit to his or her advantage to get the desirable score. [0007] A more realistic solution is customizing a putter to compensate the golfer's varying conditions where controlling the putting directions imparted to the ball with a consistent precision is priority. However, the putters currently available are ready made to standard builds of people failing to adapt to the individual golfers. Thus, some club heads with adjustable weights have been suggested by U.S. Pat. Nos. 1,901,562; 5,058,895; 6,348,014 B1; and 6,896,625. SUMMARY OF THE INVENTION [0008] The T shaped head of the putter has a main body constituting the main weight and a striking face. Top surface extends parallel to the ground and has an opening near its one end to accommodate a shaft with a double bend leading to a grip for the golfer. From the trailing edge of the top surface a center tail extends rearward to complete the T shape of putter plane. At the sides of the tail there are formed end fins with their free ends opened rearward to better guide the putter head through the air during the stroking address. The center tail may be painted white to give a well contrasted line in the green grass of the course. [0009] Opposite of the face is a rear wall from which a back weight branches centrally perpendicular to the main body. The top of the back weight extends to near midway of the length of the tail and merges with the bottom of the tail. The back weight has a bottom surface in flush with the corresponding bottom of the main body and terminates with an end wall tapered gradually toward the rear wall to avoid hitting the ground when the golfer makes strokes. A cylindrical bore is formed on one end of the rear wall, as is a similar bore formed on the other end. A center bore is also formed on the tapered end wall of the back weight. The three bores face the same backward direction in the common 90-degree angle from the rear wall. The bores are threaded internally to secure the weighting scheme of the present invention, which is incorporating three different metal screws A, B and C with an identical shape. Each screw has threads at one end and crossed grooves at its opposite end to engage any edges like a coin to turn it in a tightening or unscrewing direction. [0010] If, for example, the total weight of the putter head is set as 340 grams, it includes the weights of the screws A, B and C. The screw A is the heaviest of the group of three and may be made of tungsten. Screw B may be white or silicon bronze and the screw C is the lightest of the three and may be made of aluminum. [0011] When the screws are fastened to their initial bores, i.e. the screw A is in one side bore, the screw B in the other side bore and the center screw C in the center bore, their weights balance the putter face. In other words, such positioning of the weight screws make the face balanced putter wherein the virtual extension line of the shaft toward the head comes into contact with the center of gravity of the putter head in a natural state when no dynamics are involved. To achieve the precise balancing in the putter manufacture the length of the screws A, B and C should be first calculated with the determination of the actual center of gravity of the putter product including the shaft and then the screws are attached in their initial bores to fine-tune their respective masses by boring in their walls at the threaded ends which enter the bores of the main body. [0012] Therefore, when the screws are in their initial positions the putter with its face balanced neutralizes the leftward pulling or rightward pushing in the putting of the right-handed golfer who tends to show more pulling problems. At the same time, the double bend shaft mitigates the twisting of the putter head upon hitting the ball with its off center areas resulting in a widened sweet spot to give the right direction to the ball in more occasions. [0013] With such construction of the putter, manipulating the weight distribution in the putter head has become easy by the present invention [0014] Accordingly, the general object of the present invention is to provide a golf putter with speedy adjustment of the weight distribution in the head. [0015] Another object is to provide a golf putter having an alignment aid and weight-adjusting members which provide an extra visual aid as well as a structural indicator of the invisible sweet spot to improve the actual approach of the ball into the hole cup. BRIEF DESCRIPTION OF THE DRAWINGS [0016] FIG. 1 is a perspective view of the putter of the present invention. [0017] FIG. 2 is a plan view of the putter of FIG. 1. [0018] FIG. 3 is a perspective bottom view of the putter of FIG. 1. [0019] FIG. 4 is a rear view of the putter of FIG. 1. [0020] FIG. 5 is a side view of the putter of FIG. 1. [0021] Embodiments of the invention will now be described by way of example with reference to the accompanying drawings. Continue reading about Weight interchangeable putter... Full patent description for Weight interchangeable putter Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Weight interchangeable putter patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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