Abstract:
A golf club that can automatically align the club head with intended path of ball direction. The golf club encompasses a movable club head, electronics, a power source and motor driver for adjusting golf club head position at time of impact with a golf ball. The golf club can also serve as teaching aid for tracking a golfer swing path and errors in golf club path.

Description:
TECHNICAL FIELD 
     This invention relates to the field of golf club equipment and more specifically, to a golf club having a feature to aid in club head alignment capability, improving golf ball movement on a desired path. 
     BACKGROUND 
     Golf is a complicated sport requiring precision and timing of various muscles to execute a desired swing. Even for top-professional golfers, who have had many hours of intense training, cannot achieve a perfect swing on consistent basis. A perfect swing would ensure golf club head is square with the golf ball and aligned on a path of the desired club swing. Putting, which typically makes up nearly 50 percent of a golfer&#39;s score and is a relatively slow motion, requires only minimal upper body motion. Developing and improving a putter swing is difficult. Proper use of a golf driver requires both precision and fast moving lower body and upper body movements that must be precisely timed relative to each other. In the example of golf putting, to achieve a successful outcome the golfer must align the putter such that the putter face is aligned with intended line of ball direction. This will help ensure that the putter head stays square at impact. This is called setup alignment. Next, the golfer must control critical body muscles such that no twisting or pull or push of club head occurs at impact of golf club head with golf ball (skidding or backspin). Also golfer must ensure that club head vertical plane is not shifted low or high, right or left. All these actions reduce or increase ball speed, may change ball trajectory direction and have an impact on the distance the ball will travel. 
     The golf industry has produced a number of golf putter or golf club systems intended to counter the effects of club/ball misalignment, so the golf game is more enjoyable for average recreational golfer. These systems are divided into two groups; (i) systems that improve the golf club designs through use of weight balancing or other means to control club head moments of inertia, material selection, alignment markers, club head, shaft or grip designs. All these systems are intended to reduce and counter the effects of golfer poor performance; and (ii) training systems solely intended to provide feedback mechanism for golfer as an aid to better correct for common problems: for example to teach proper swing or track progress of training over time. Some of these systems try to teach what industry refers to as “Muscle Memory”, or ability of golfer to learn, through repeated movement, what it feels like when correct swing is executed. Even if the golf ball behaves in a desired manner, this does not always mean a correct swing was executed. As an example, a golf putt swing that opens the club face with outside-in path might produce a golf ball moving in straight path (two mistake make a right). Muscle memory training seeks to make the proper movement more automatic. 
     An improved golf club is desired. Such an integrated system would make the game of golf enjoyable by building confidence through eliminating many of common club head alignments problems so golfer can focus on smaller set of parameters to master while at same time providing training vehicle to learn gradually and improving performance. 
     SUMMARY OF THE INVENTION 
     The present invention includes a golf club comprising a club shaft having an upper grip end and a lower club head mount end and a club head mounted on the lower club head mount end. The club head includes a club face, at least one motor mechanically linked to the club face and configured to allow a pivotable positioning of the club face, a controller linked to the at least one motor and configured to actuate the at least one motor during club head movement to alter the position of said club face; and a battery mount joined to the controller and the at least one motor such that when a battery is inserted into said battery mount power may be provided to said controller and said at least one motor. The at least one motor may include more than one motor. The use of two motors allows the club face to be adjusted along to axes, for example to allow for horizontal and vertical position. The club head may also include a position sensor in the club head. The position sensor may generate a data stream that is stored in an onboard memory or wirelessly exported. The position sensor sends data to the controller for control of the club face. 
     The golf club of claim  1  may also include a grip pressure sensor positioned at said upper grip end of said club shaft, the pressure grip sensor electronically linked to said controller. The golf club of claim  1  may also include a visible indicator on the club head and configured to be controlled by said controller to provide visible indication of a controller state. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a top view of golf club, golf ball and club and ball paths. 
         FIG. 2  is a top view of golf club putter head embodiment with movable club face. 
         FIG. 3  is a top view of as in  FIG. 2 , with internal components illustrated. 
         FIG. 4  is a side perspective of a club head and cutaway section of a club shaft showing an embodiment of a golf club driver head that is positionable along to axes (vertical and horizontal axis). 
         FIG. 5  is a block diagram of components of proposed system including a multi-dimensional (3 or 9 axis MEMS) accelerometers, Motor Controller module (M-Ctrl), Embedded low power processor (uP), Power Management module, LED and switches. 
         FIG. 6  is an instruction flow chart example. 
         FIG. 7  is flow chart example of system function. 
         FIG. 8  is a side view of a golf club embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     The following description provides detailed examples of envisioned embodiments of the present invention, it should be noted that these details are intended to be exemplary and in no way limit the scope of the invention. 
     With respect to  FIG. 1 , a golf ball  100  positioned at proper setup normally at equal distances from the golfer&#39;s two feet (or slightly forward for longer golf clubs). As the golfer swing the golf club, the golf club head can travel in path represented by  101  which is desired path of the golf club. Alternatively the head could travel in an inside-out direction as represented by  103  or outside-in direction as represented by  102 . Furthermore, the golf club head itself can make contact with golf ball  100  at square position  105  or open face  104  or closed face  106 . Depending on combination of club swing path and club head at contact and follow through defines the path that golf ball  100  will travel. A perfect golf swing will produce a club headsquare to the ball as seen in square position  105  and club path  101 . Other combinations are not desirable and produce incorrect golf ball  100  path. These are referred as imperfect swings. As an example, a club swing path  102  with open face club head  104  can produce a golf ball  100  traveling to right of target along path  102   a , called a slice. A moderate slice is called a fade in which club head is square  105  where golf ball first travels to left of target and then returns to target. Depending on power of club swing, angle of club head, and club path will determine the degree of slice, or fade. In another example, a club swing path  103  with closed face club head  106  can produce a golf ball  100  traveling to left of target along path  103   a , called a hook. A moderate hook is called a draw in which club head is square  105  where golf ball first travels to right of target and then returns to target. Depending on power of club swing, angle of club head, and club path will determine the degree of hook, or draw. There are also other combinations that are called Push or Push Slice, Pull or Pull Hook that caused by various combination of club path and club head at impact with golf ball. 
     All such combination of imperfect swings are caused by complex movement of body, alignment errors at setup time, timing of various muscles, poor posture and/or muscle memory execution. Mastering all parameters required to execute a perfect swing is ever elusive target of every golfer, requiring hours of intense training. This reason explains why most recreational golfers and professionals fail to perfect their games 
     Furthermore, at times it is desirable to actually create a slice or hook or other combination of defined golf ball trajectories. Many professional or experienced golfers use such combination to shape the flight of the ball path for optimum performance, avoid obstacles (such as tall tree), or adjust for winds. Again these combinations are difficult for the average recreation golfer. 
     In golf putting, where the goal is to roll the ball over carpet-like grass to a destination hole presents similar challenges, although not as challenging parameters as driving the golf ball for a long distance. However, technique is still similar with golfer first position to stand aligned and parallel to the path desired direction of the golf ball while aiming for the hole. Similar to the discussion above, if the club head is not square and/or the club head is not traveling a straight path then ball can roll to right or left of target path. In case of putting, those errors are often referred to as push or pull indicating right or left of target roll of golf club respectively. It is also critical that golf putter head contact the golf ball vertically square at middle of club head (called the sweet spot) to ensure the golf ball  100  rolls around its axis without causing spin or skidding. Putting technique requires that golf swing be isolated to upper torso movement with steady triangular hand position throughout the swing. Deviation will cause golf ball  100  to move away from target path. Unlike golf club driver swing, a golf putter swing is always intended for golf ball to follow the straight path on designated direction. Draw or fade is not desirable unless caused by contour of putting ground and location of ball from the target hole. Normally, a golfer adjusts for such contours by changing the setup of desired path and speed of swing. 
     As explained, the game of golf is very complex to perfect, as there are many factors influencing trajectory of golf club path from desired path. What is needed is ability of golf club to anticipate and calculate errors generated by a golfer and adjust for variation in golf club swing and golf club head by changing golf club head sufficiently and at the right time to counter the produced errors. For example, if club swing path is  102 , then opening the club head to position  104  will produce a golf ball  100  traveling in designated desired path  101 . Although, this swing would still impart spin on the golf ball resulting in fade, the result is still far more desirable than if no adjustment were made to the golf head. Furthermore, in case of putting, most common errors can be removed by dynamic ability of golf head to change the angle of the club face. This is especially true if putter head can be adjusted both horizontally and vertically. 
     With reference to  FIG. 2 , golf putter head assembly  203  is shown with adjustable golf club head face  205 . The club head face  205  can tilt around pivot point  204 . As illustrated, a square facing block at position  200  will not require the club head face  205  to pivot relative to the block to hit the ball square. In contrast if the golfer has rotated the grip of the golf club (putter) then the present embodiment would engage a motor to shift the square facing block to position  201 . The effect of this shift is to counter the rotational misalignment in the golfers swing by moving the block angularly on the arc shaped track. The square facing block is pivotably movable with respect to club head face  205 . When the block is adjusted in angular position, the golf club head face is repositioned such that is returns to square relative to the golf ball. In position  201  golf club head is closed and in position  202  golf club head is open prior to angular adjustment by a motor that provides an angular adjustment of golf club head face  205 . Aligning marker  207  is used as reference by golfer for initial alignment setup by establishing it as the desired path and impact location with center of golf ball. The golfer will stand, feet apart, with aligning marker  207  lining up with the ball direction. The club, as explained below, will register a starting point with the club not in motion and the golf club head face  205  square to the golf ball. The club will then return the golf club head face to this position during the swing at the point of impact with the golf ball. This will aid in making sure that the golf club head face is square with the ball and does not hook or slice. 
     With reference to  FIG. 3  shows an embodiment of the with golf putter head assembly  303 , having a moveable golf club face  305  may be attached to a golf club shaft (not shown) using a hosel and ferrule at  310  or at  311  for a left-handed golfer. As shown, the golf club head face  305  can pivot at  304 . This embodiment includes LED lights  312  and  313  providing indicator lights to the golfer and extending to the exterior of member  300 . Enclosed inside member  300  are electronic sensing and control Printed Circuit Board, PCB  306 , powered by rechargeable battery  308  connected to PCB  306  using wires  307 . PCB  306  serves as the control process, sending a signal to activate motor  302 . Motor  302  turns shaft  302   a  that engage slotted groves  309 . Member  300  is pivotably attached to club face  305  at pivot  304 , but is otherwise free to pivot as the teeth of shaft  302   a  engage slotted grooves  309  on arch  320 . The ball will strike club face  305  at  305   a . The described embodiment can sense and control the movement of golf club putter and change angle of the golf club head  305 . 
       FIG. 4  shows a component make up of an embodiment, with golf driver  401  with moveable golf club head  402  in both vertical and horizontal direction. The moveable golf club head  402 , attached to golf club shaft  400  (a left hander golfer would require a mirrored version). Visible are also two LED lights  406  and  407  which are mounted on circuit board  403  contained within head  402  and extending to the exterior of head  402  such that the LEDs  406 ,  407  are visible to the golfer using driver  401 . Enclosed inside golf club  401  are electronic sensing and control Printed Circuit Board, PCB  403 , powered by rechargeable battery  408  connected to  403  using wire. Control module  403  drives a motor actuator  404  and  410  that are connected to club shaft  400  such that movement of club head  402  is permitted in both vertical and horizontal directions. Control module  403  also connects to motor actuator  404  and  410  using wire  405 . Wire  405  also connects to golf club handle where a pressure sensor can be placed for sensing grip pressure. The described system can sense and control the movement of golf club driver example and change golf club head  402  angle in both vertical and horizontal direction. People familiar in art can also envision how such a dual actuator design can be implemented for golf club putter or any other golf clubs such as irons. 
       FIG. 5  illustrates a block diagram of electronic components that are integrated into the golf club head with a position adjustable face. MEMS  501  are multi-dimensional accelerometers, gyroscopes and compass systems often referred to as 9-axis or 3-D motion sensor. This component is increasingly available as a low cost component that precisely senses movement, allowing recording of club head speed, direction, and coordinates. Manufacture of such sensors provide software development kits (SDK) that provide full algorithms for calculating location of sensor in X,Y,X coordinate, and reference to location of magnetic compass. This information is processed by microprocessor  502  and various calculations performed such as speed, time, club path, anticipated time of contact with golf ball and other operation critical to control the moveable club head. Furthermore, uP memory unit  502  is capable of storing the generated data for subsequent or simultaneous transmission (wired or wirelessly) to a mobile computing device or personal computing devices, such as a lap top computer or smart cell phone. uP unit  502  is also capable of storing golfer profile information about past swings to better analyze best correction of golf club head, referred to as Artificial Intelligence (AI). At correct time during the golf swing unit  502  will send correction instruction to Motor Controller unit  504  for manipulating the golf club head. uP memory  502  unit may also incorporate a Global Position System (GPS) for sensing location providing the exact location of golf club at time of swing. This information can be stored and later processed for training and analysis. There is also onboard power management module PM,  503  that provide necessary power conversion to electronic and motor driver unit  302 . Unit  503  provides recharging circuit for the battery. As example, the golf club battery may be recharged by plugging unit into a computer USB outlet or to AC wall-unit using an AC-to-DC adapter unit. There is also visible LED  505  or other visible indicators that provide feedback to golfer as to status of unit, calibration or other functions. There is also sliding switches as part of LED  505  that allow for electronic unit to be turned ON or OFF, put into calibration or transmission modes or other special functions. All such changes are detected by uP unit  502  and processed accordingly. 
       FIG. 6  illustrate example of how golfer will operate the auto-aligning golf club unit. The golfer will turn the unit ON, align his or her body in parallel to direction of intended golf ball path  100  and  101  (as seen in  FIG. 1 ), and place the golf club faces squarely next to golf ball  105  as normally expected for proper alignment of golfer with intended target, as indicated by block  600 . Golfer then observes that visible LED light is Green  601 . This indicates to golfer that club head electronic is ready. Golfer may then execute the golf swing  602  and the system will correct for errors caused by golfer. Red  604  means that club head is still moving as golfer needs to align correctly behind the ball first, pause in this position and wait for the green light to indicate that the golf ball impact point has been registered. This pause action will cause the controller to activate green light to signal to golfer that controller has recorded that club head alignment location and golfer can execute the swing. 
       FIG. 7  illustrates example of instructions code inside uP unit  502 . As described in  FIG. 6  above, once golfer aligns and is ready for golf swing execution  600 , uP unit  502  will use information provided by MEMS unit  501  to compute and store direction of intended target  700 . As golfer begins the golf swing, uP unit  502  will continuously track information provided from MEMS, optional GPS sensor and grip pressure sensor build into club shaft handle  400  and after applying Digital Signal Processing (DSP) Algorithm to compute and estimate contact time with golf ball  701 . If uP unit  502  DSP and Artificial Intelligence algorithms determine that club head correction is necessary then instruction is issued to Motor Controller  504  to modify club head appropriately  702 . M-Ctrl unit  504  will apply correct power to motor-actuator unit  302  at correct time interval at prior and after club head makes contact with golf club to ensure the golf ball  100  moves in direction of desired path  703 . 
     With reference to  FIG. 8 , a golf club is shown having a club shaft  804  having a grip  802  at the upper grip end of the club. At the lower club head mount end a club head  806  is mounted on the shaft  804 . Within grip  802  is a pressure sensor  808  connected by a wire  802   a  to the controller in club head  806 . This allows sensing of the grip pressure during use of the golf club.