|20040106092||Golf training aid apparatus||June, 2004||Galanis et al.|
|20020037780||Hockey stick with reinforced shaft||March, 2002||York et al.|
|20070178997||Bladder structure of a football||August, 2007||Chang|
|20070117645||Golf club and kit having interchangeable heads and shafts||May, 2007||Nakashima|
|20080167146||HAND GRIP FOR A SPORTS APPLIANCE||July, 2008||WU|
|20090270194||Golf Club Grip and Method of Using Same||October, 2009||Casati Jr.|
|20080300074||Practice hockey puck||December, 2008||Harpell|
|20060154738||Golf training device||July, 2006||Larsen|
|20020013186||Break-away, low resistance golf tee||January, 2002||Webb|
|20040097298||Golf club having stabilized air flow structure||May, 2004||Hsieh|
|20090181813||BALL BAT WITH EXPOSED REGION FOR REVEALING DELAMINATION||July, 2009||Giannetti et al.|
 1. Field of The Invention
 This invention pertains to golf training devices, and more particularly to a golf swing training device whose use will train a golfer to execute an optimum golf club swing that has a desired extension, release and follow through.
 2. Prior Art
 The present invention is in an improved golf swing trainer from an earlier golf swing trainer of Olsen, U.S. Pat. No. 4,511,147, that is a golf swing trainer having a weighted head. The trainer of the Olsen '147 patent provides a device that a golfer, by swinging the trainer a number of times daily, will imprint, on their mind a desirable golf swing with, with the golfer relaxed, and swings loosely, they will imprint a proper golf swing on their mind and body having the ideal upper body rotation and weight transfer as the swing progresses from a high arc to follow-through. While such trainer is a very effective tool for training a proper golf club swing, does not provide the golfer with the experience of hitting a golf ball as part of their execution of a proper golf swing. The present invention remedies this omission by a substitution of a large club head, preferably a large iron having an open face.
 In training with the invention, the golfer not only conditions their mind and body to perform an optimum golf swing, they also learn to control that swing so as to properly strike a golf ball and see the results of that perfect swing. By learning to control their swing, the invention teaches the golfer to strike a golf ball so as to produce a low or high ball angle of flight, to impart side spin or rotation to the ball to curve its flight path, and the effect of not striking under the ball, or topping the ball. The golf swing perfecter of the invention thereby provides a golfer with a training device for not only conditioning their mind and body to execute the actions as are required to produce an optimum golf swing, it further conditions the golfer by their striking an actual golf ball, to control that “perfect” golf swing to make a “perfect” shot.
 Like the Olsen '147 patent, the invention includes a golf club grip for properly positioning their hand around the grip, and also utilizes a club shaft, that is bent at like angles to the golf club shaft of the '147 patent, and performs the same function of displacing the club head weight away from the golf swing center line.
 While the golf swing perfecter of the invention can be used alone, it is preferred to that in be used sequentially with and after training with the trainer of Olsen '147, with the golfer applying their learned golf swing to hitting a golf ball as a further refinement of their over all game.
 It is a principal object of the present invention in a golf swing perfecter to provide a training device where the golfer applies their learned golf club swinging skills to actually hitting a golf ball, improving their game play.
 Another object of the present invention in a golf swing perfecter is to provide a golf swing training device that can be used alone or in combination with the trainer of the Olsen '147 patent to condition a user, exercising with the device only a few minutes a day, to swing a club so as to have a swing that will meet a golf ball at an optimal attitude and propel the ball to where the golfer has aimed it.
 Another object of the present invention in a golf swing perfecter is to provide a trainer that is used to train a golfer's swing by a proper hand positioning and weighted club head off-set to the club shaft, that provides a dynamic interaction where the individual actions or elements as make up a desirable golf swing are trained into the golfer, and includes a controlled striking of a golf ball with the trainer head for the golfer to practice controlling their swing by simulating the different shots as make up a golf game.
 Still another object of the present invention in a golf swing perfecter is to provide, by a golfer swinging the trainer as they would a standard golf club, a dynamic training of the golfer's swing starting with: proper hand placement on the club grip, club extension at the top of their swing and with their weight on their back foot; release, as the club face travels to engage the swing perfecter head with a golf ball, with the weight shifting so as to be evenly distributed; follow-through as the club is swung past where the ball was and with the weight shifting to their forward foot; and with the flight of the golf ball observed by the golfer who will then appropriately adjust their swing to propel the ball a desired distance and direction.
 Still another object of the present invention in a golf swing perfecter is to provide a golf swing training device that is easy and entertaining to use, and enables a golfer to develop a desirable golf club swing and to train that golfer to control that swing by hitting a golf ball, with the golfer utilizing the observed flight of which golf ball to adjust their swing so as to learn to strike the ball at an optimum point of the club head face and at a desired speed to drive the ball a desired direction and distance.
 In accordance with the above objects, the present invention provides a golf swing training device that, like a conventional golf club, includes a hand grip fitted onto one the end of a shaft that ends in a head, that is preferably a heavy iron golf club head. The shaft is bent at spaced intervals to off-set a lower end thereof from the axis of the shaft upper portion, and which shaft lower end has a golf club end that is preferably an over size iron having an open face, such as a seven (7) iron weighing from seventeen (17) to seventeen point five (17.5) ounces. The hand grip fitted is onto the shaft upper end and is contoured to have finger grooves and thumb supports built therein to accommodate and properly position a golfer's hand closed therearound. The spaced shaft bends are at like complementary angles to bend the lower shaft out from the axis of the shaft upper portion and then back to a parallel attitude with the axis of the shaft upper portion. The bends are spaced apart a distance to provide a direct off-set of the club head end from what would be the axis of a conventional golf club, also known as the golf club effective center line.
 Thereby, with a golfer gripping the device grip end and performing a golf swing, the off-set head provides a castering effect at a point in the golf swing where the club head has swung through the bottom of the swing and just below where the head would contact a golf ball, providing an accentuation to the left and right side extension of the golfer's body and a rolling action of the golfer's hands, one over the other, known as the “release” point. With the perfecter, a golfer both trains their body and mind to perform an optimum golf swing and culminates that swing by hitting a standard golf ball, wiffle ball, or the like, and observes the flight of which ball to, in practice, adjust that swing to strike the ball at a location on the club face and with appropriate force to where the ball will travels to a desired location.
 Still other benefits and advantages of the invention will become apparent to those skilled in the art to which it pertains upon a reading and understanding of the following detailed specification.
 The invention may take physical form in certain parts and arrangement of parts, and a preferred embodiment of which will be described in detail in this specification and is illustrated in the accompanying drawings which form a part hereof:
 A golf swing involves moving a head of a golf club, either an iron or wood, into contact with a golf ball, with club head then traveling up from where the ball was, as a follow through. In a proper swing, the club head will move from an apogee point at the top of the golfer's swing, through a uniform arc to a perigee point that is slightly below and behind the bottom of the golf ball. The head continues to move upwardly into engagement with the ball, to optimally strike the ball at the club head “sweet spot” that is approximately the club head center of mass. The ball will then travel upwardly and outwardly in an arc, with the height of the ball flight determined by the force applied to the ball through the club head, and by the slope of the club face. With the distance the ball travels depending upon the vertical height that the ball obtains and the force applied by the club head striking the ball. The cited Olsen '147 patent provides a tool for teaching an optimal golf swing. Whereas, the golf swing perfecter, in addition to functioning a swing training device, further provides for training a golfer to control that optimum swing so as to optimally strike a golf ball such that the golf ball will travel to where the golfer aims it.
 As set out above, the invention in a golf swing perfecter is useful as an adjunct to training with the trainer of the Olsen '147 patent, or can itself function as a golf swing trainer and also provides for teaching the golfer to control their swing so as to properly hit a golf ball, utilizing that learned swing.
 Like the Olsen '147 patent, the golf swing perfecter
 Also, like the trainer of the Olsen '147, the golf swing perfecter
 The club head of the Olsen '147 patent is intended to provide a weighted club end presenting a minimum air resistance during swinging, and is not intended for use in actually striking a golf ball. Accordingly, the Olsen head is formed from a section of round bar stock, that is preferably iron or steel, and is bent to approximate the general shape of an “iron”, is open across its center and is preferably coated with a plastic material. The Olsen head is formed such that its weight or mass is centered further from the shaft connection than would be the weight or mass of a conventional club head, and is significantly heavier than such conventional club head, either a wood or an iron. In practice, the Olsen head weighs approximately thirteen (13) ounces, plus or minus one (1) ounce. The weight of which Olsen head and its distribution to produces a required torquing action to train the golfer, who swings the trainer, to perform the desired second lever effect portion of a preferred golf swing. Further, to provide a moment arm arrangement at the head end so as to encourage head rotation during release, the open head of the Olsen '147 patent is elevated at a toe end. The toe end thereby provides a moment arm above the horizontal from that of a conventional club head, to encourage the described head rotation during release.
 The trainer of the Olsen '147 patent, with its greater head weight than that of a conventional golf club, and its off-set from the club shaft axis, and with the greater shaft length, provides, when swung, a castering effect, with the right wrist rolling over the left. Also, the swing includes an accentuated extension and compression of the sides of the golfer's body, as the club head is swung through a full arc of travel. With, during follow-through, the weight of the trainer head tends to hold the swing longer in the line of the ball flight, causing the swing to finish high, with such a finish commonly known as a “Ben Hogan” finish.
 In practice, the trainer of the Olsen '147 patent, is swung by a golfer for fifteen to twenty minutes a day to develop the desired golf swing. With such regular use, any golfer can improve their swing. However, the Olsen trainer fails to teach a coordination of the improved swing with actually hitting a golf ball.
 The invention recognizes a need to apply the improved golf swing to actually hitting a golf ball, and to this end, the golf swing perfecter was developed that is preferably for use as an additional golf swing training tool for use with the Olsen trainer. Through, it should be understood, the golf swing perfecter
 The golf swing perfecter
 In practice with the golf swing perfecter
 As with training the golf swing to optimally strike a golf ball, that swing also needs to be controlled to strike the golf ball with a force that is appropriate to drive the ball a desired distance, as illustrated in
 Accordingly, with the regular use of the golf swing perfecter
 A preferred embodiment of a golf swing perfecter of the invention has been shown and described above. It will, however, be apparent to one knowledgeable or skilled in the art that the above described embodiment may incorporate changes and modifications thereto without departing from the general scope of this invention. Which invention therefore is intended to include all such modifications and alterations in so far as they come within the scope of the appended claims and/or a reasonable equivalence thereof.