fig1 shows a golf putter 10 and a grip 16 conventionally installed on the elongated shaft 12 of the putter 10 at one end , and a putter head 14 fixed to the elongated shaft 12 in conventional fashion at the other end at a hosel 20 . the putter head 14 is shown addressing a golf ball 18 at the moment of impact . the grip 16 may be fabricated from a flexible material such as a synthetic resin which may be solid , closed cell , open cell , or any combination of these . fig2 shows the golf putter 10 modified according to at least one aspect of the invention . in fig2 , the conventional grip 16 has been replaced by a grip 100 . the grip 100 may be fabricated from a flexible material such as a synthetic polymeric material , leather , others , or a combination of these . the grip 100 is secured to the shaft 12 of the putter 10 conventionally , but differs from the grip 16 in that the external surface 102 of the grip 100 is not concentric with the shaft 12 as is the grip 16 . rather , when considered in end cross sectional view , as is shown in fig2 , the grip 100 is seen to project from the shaft 12 more on one side than on another side . the grip 100 has a lateral wall having length ( which is aligned with the axis 22 of the shaft 12 , as seen in fig1 ) and an internal bore defined by an internal surface 104 which contacts the shaft 12 along the length of the grip 100 . the wall of the grip is configured to cooperate with the shaft 12 of the putter 10 in conventional fashion . the wall of the grip 100 has a thickness dimension between the internal surface 104 and the external surface 102 . this thickness dimension , unlike that of conventional grips , is variable . notably , thickness of the wall between the internal surface 104 and the external surface 102 on one side of the internal bore is different from thickness of the lateral wall between the internal surface 104 and the external surface 102 on an opposed side of the internal bore when the grip 100 is considered in the end cross sectional view of fig2 . thickness characteristics of the grip 100 and other illustrated configurational characteristics of the grip 100 and of other grips may be shown exaggerated for clarity of understanding . fig3 shows the grip 100 positioned on the shaft 12 of the putter 10 at a different angular orientation on the shaft 12 . for the purposes of this disclosure , the angular orientation may be related to the putter head 14 . the external surface 102 of the grip 100 may have configurational characteristics of a conventional golf club grip . angular orientation of the grip 100 relates to compensating for a golfer &# 39 ; s natural tendency to vary from an ideal body motion during the swing . the correction may relate to offset , or variation in the azimuth from the intended path , or may relate to lie angle , or to both . turning to fig4 , the putter 10 is shown square to the ball 18 at impact , and at a neutral stance relative to a horizontal environmental surface h . a proper stroke may be made with a conventional grip such as the grip 16 given the situation depicted in fig4 . however , a golfer may naturally hold the putter 10 at an inappropriate lie angle such as that depicted in fig5 , where it is seen that the toe 24 of the putter head 14 is elevated from and the heel 26 contacting the horizontal environmental surface h . accordingly , the grip 100 may be offset appropriately for this situation such that the golfer is urged by the offset to modify his swing such that the putter head 14 will be square to the ball 18 at contact , as seen in fig4 . fig6 shows the opposite inappropriate lie angle , where it is seen that the toe 24 of the putter head 14 contacts the horizontal environmental surface h , while the heel 26 of the putter head 14 is elevated . it will be seen that the angular orientation of the grip 100 has been reversed from that of fig5 , so that the golfer is now urged to modify his swing in a way that will compensate for the situation of fig6 . modifications of grip and of consequent swing motion are at the heart of the operative principle of the invention . it would be possible to introduce variations to both configuration of the grip , such as the grip 10 , and to angular orientation of the grip to its associated shaft such as the shaft 12 to accommodate still other disruptive influences to a squarely struck putt while utilizing the principles of the invention . in an example illustrated in fig7 , it is possible to provide the functional features of the grip 100 in an oversized grip 200 . the difference between the grip 100 and the grip 200 lies in the maximum distance from the shaft 12 to the most distal portion of the respective grip 100 or 200 . a discrepancy in the two maximum distances is called out in fig7 as a dimension d . another possible variation is in the end cross sectional configuration of the periphery or outer surface 302 of a grip 300 , seen in fig8 . whereas the end cross sectional configuration seen in fig2 and 3 is oval , it is possible to provide a circular end cross sectional configuration , as seen in fig8 . adjustments of angular orientation are depicted in fig9 - 12 . in fig9 , projection of the relatively thick portion of the wall of the grip 300 to the upper left , as seen in fig9 , will introduce a correction effect for both lie angle and also offset . orientation of the grip 300 as shown in fig9 will compensate for uncorrected offset right and also for the lie angle shown in fig5 . orientation of the grip 300 as shown in fig1 will compensate for offset right and also for the lie angle shown in fig6 . orientation of the grip 300 as shown in fig1 will compensate for both offset left and also for the lie angle of fig6 . orientation of the grip 300 as shown in fig1 will compensate for both offset left and for the lie angle of fig5 . turning now to fig1 , the grip 100 is seen to be greater in thickness at the right of the shaft 12 as depicted , but to be of generally constant thicknesses along its length . alternatively stated , the outer configuration of the grip 100 is such that seen in the side profile of fig1 , the left and right sides 106 and 108 are parallel . as seen in fig1 , the left and right sides 406 and 408 are both arranged at an obtuse angle relative to the corresponding sides of the shaft 12 , thereby generating a tapered configuration of the grip 400 . in fig1 , it is seen that the left side 506 of the grip 500 is parallel to the sides of the shaft 12 , while the right side 508 is arranged at an obtuse angle relative to the sides of the shaft 12 . non - circular configurations of a grip such as the grip 100 may be oval as shown or alternatively may take other configurations . for example , and referring to fig1 , the non - circular configuration of a grip 600 may be elliptical , with the left face 606 comprising a straight line which is parallel to the straight line of the right face 608 . by contrast , in an oval , there is no straight line in the periphery . fig1 shows a configuration wherein a grip 700 has a non - circular configuration wherein the left face 706 has a straight section which is not parallel to the corresponding straight section of the right face 708 . fig1 shows a grip 800 which when seen from a side profile corresponding to that of fig1 - 15 reveals a left side 806 which is straight and a right side 808 which is convexly curved . fig1 shows a grip 900 which when seen from a side profile corresponding to that of fig1 - 15 reveals a left side 906 which is straight and a right side 908 which is concavely curved . the various configurational characteristics presented herein may be provided in any feasible combination , and not only in the specific configurations shown herein . the invention may be thought of either as a grip for a putter , such as the grip 100 and the putter 10 , or alternatively , as a combined putter and grip , such as the putter 10 improved by installation of the grip 100 . the invention may also be thought of as a method of modifying grip characteristics of a conventional golf putter 10 , comprising a step of providing a grip such as the grip 100 for the conventional golf putter 10 which has at least one characteristic which after installation on the putter modifies offset performance characteristics of the putter 10 . the method may be restated so as to comprise steps of providing a grip such as the grip 100 with an external surface such as the external surface 102 and an internal bore oriented within the grip such that when the grip is installed on the shaft of the putter such as the putter 10 , orientation of the hands of a golfer gripping the putter causes the putter to be swung in a manner which modifies performance of the swing . while the present invention has been described in connection with what is considered the most practical and preferred embodiment , it is to be understood that the present invention is not to be limited to the disclosed arrangements , but is intended to cover various arrangements which are included within the spirit and scope of the broadest possible interpretation of the appended claims so as to encompass all modifications and equivalent arrangements which are possible .
a grip for a golf putter , which grip restores squareness of address of a golf ball by the putter during a swing , where either or both of offset and undercut impair squareness of address . the grip may taper asymmetrically relative to the axis of the shaft of the putter golf club , or symmetrically , so as to impart offset to the right or offset to the left of the shaft . the degree and orientation of imparted offset are selected to compensate for the degree to which the original offset or undercut impair squareness of address . the grip may be circular or non - circular in cross section , and may be tapered along its length .