This disclosure relates generally to golf clubs and relates more particularly to golf club grips having embedded end caps to have sensors for such measurements as swing speeds and distance of shots.
Golf clubs can be equipped with a sensor that records a golfer's shots and can pair with a smartphone app where the shot data can be viewed. Several methods have been developed to secure the sensor to a golf club. Some sensors can be secured directly to the grip. For example, sensors can be screwed into the butt end of a grip. Other sensors can be embedded within the grip and require a separate component of the grip, such as an end cap, to house the sensor. In most grips, the shaft is a rigid body that extends through the grip body and terminates within the end cap. In most embodiments, an end cap is an unsupported extension of the grip because the shaft does not extend through the end cap. Since the end cap is unsupported, the grip feels unstable to golfers who prefer to hold the grip near the end. This instability can be distracting to a golfer during a swing and can provide inaccurate feedback from shots. Overall, the execution of shots or gripping of the club feel unstable to the average golfer.
Most grips taper such that the largest diameter is at the butt end, and the smallest diameter is near the tip end. Since the grip forms one smooth continuous shape, the golfer will naturally grip the club near the butt end where the sensor sits. The current end cap geometry does not prevent golfers from gripping near the sensor. Therefore, there is a need in the art for a grip that prevents a golfer from gripping near the end and guides the golfer to a stable grip region even when the grip comprises an end cap.
To facilitate further description of the embodiments, the following drawings are provided in which:
The invention described herein is a grip having a grip body and an end cap that houses a sensor. The end cap described herein is designed to address these instability issues that extend from the grip. For example, the end cap is tapered to define a non-gripping surface. The non-gripping surface creates a gap between the golfer's hands and the butt end of the grip to create a surface that is uncomfortable for a golfer to hold. The non-gripping surface guides a golfer's grip toward the grip body, where the golfer is encouraged to grip. The grip body provides a more structured contact point between the golfers' hands and the golf club grip. In some embodiments, the end cap includes flanges to further address instability issues. The flanges can comprise a corresponding geometry to a set of receiving arms located on the grip body. The flanges can be received within the receiving arms to secure the end cap to the grip. The end cap described herein addresses instability issues to provide a more stable and repeatable grip and/or swing.
“Flanges” as used herein is describes the lower tapered region of the endcap.
“Longitudinal axis” as used herein is an axis defined by the shaft. The longitudinal axis runs from a geometric center of the bottom end of the shaft to a geometric center of the top end of the shaft.
“Tangent plane” as used herein is a plane defined by the end cap. The tangent plane is bound by an outer surface of the upper portion that extends from the maximum outer diameter to the grip butt end.
“Taper” as used herein is a reduction of thickness toward one end.
For simplicity and clarity of illustration, the drawing illustrate the general manner of construction, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the invention. Additionally, elements in the drawing are not necessarily drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention. The same reference numerals in different drawings denote the same elements.
The terms “first,” “second,” and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms “include,” and “have,” and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, device, or apparatus that comprises a list of elements is not necessarily limited to those elements but may include other elements not expressly listed or inherent to such process, method, system, article, device, or apparatus.
The terms “top,” “over,” “upper,” “lower,” “inner,” “outer,” “maximum,” “taper,” “chamfer,” and the like in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.
The terms “couple,” “coupled,” “couples,” “coupling,” and the like should be broadly understood and refer to connecting two or more elements or signals, electrically, mechanically and/or otherwise.
The invention described herein is an embodiment of a grip comprising a grip body and a tapered end cap. The grip body defines a gripping surface, which is the lower portion of the grip where the golfer can grip without interfering with the end cap. The tapered end cap is located near the end of the grip body and houses a sensor. In some embodiments, the sensor is press-fit into a cavity and held into place by the end cap. In some embodiments, the sensor is secured within the cavity with an epoxy material. The end cap is designed to improve stability within the grip. The end cap is tapered to define a non-gripping surface, which prevents the golfer from gripping near the unsupported end cap. Further, the end cap comprises flanges that couple with receiving arms on the grip body to form a secure connection. The non-gripping surface and flange connection form a sturdy grip that prevents the golfer from holding the grip near the end cap.
A golf club described herein comprises a club head, a shaft, and a grip. The shaft comprises a rigid body having a top end and a bottom end. Referring to
Referring to
The grip 10 defines a length, measured along the longitudinal axis 86 from the butt end 18 to the tip end 20. The grip length is between 9.5 inches and 11.5 inches. In some embodiments, the grip length is 9.5 inches, 9.75 inches, 10 inches, 10.25 inches, 10.5 inches, 10.75 inches, 11 inches, 11.25 inches, or 11.5 inches. The end cap 12 increases the length of the grip 10, making the grip 10 longer than a grip without a sensor. In one embodiment, the end cap 12 extends the grip length 0.25 inches. Different embodiments of the end cap 12 comprise different geometries and components.
Referring to
The upper portion 137 comprises the upper surface 135, and a first circumferential wall 132, as illustrated in
Referring to
Referring again to
The upper portion 137 further comprises a lip 128 at the perimeter of the first cavity 130, as illustrated in
Referring to
Referring to
Referring to
Referring again to
The first cavity 130 and the second cavity 138 are formed along the longitudinal axis 180. The first cavity 130 is exposed near the grip butt end 118 such that the sensor is visible when viewing the grip butt end 118 in a plane orthogonal to the longitudinal axis 180. The second cavity 138 is below the first cavity 130 and receives the shaft. To accommodate the sensor, the diameter of the first cavity 130 is greater than the diameter of the second cavity 138. In some embodiments, the first cavity 130 is within the upper portion 137. In other embodiments, the first cavity 130 is within the upper portion 137 and a section of the lower portion 139. The upper and lower portions 137, 139 are generally separated near a middle of the end cap 112.
The lower portion 139 of the end cap 112, further comprises one or more flanges 142 near the grip body first end 126, as illustrated in
Referring to
The hardness of the end cap 12 material is measured using the Shore A Hardness Scale and is between 50 to 100. In some embodiments, the Shore A hardness is between 50 to 60, 60 to 70, 70 to 80, 80 to 90, or 90 to 100. The end cap 12 is formed from a material that is harder than that of the grip body 22. In one embodiment, the Shore A hardness is 78. The Shore A hardness of the end cap 12 helps protect the sensor and grip butt end 18 since golfers tend to put the grip butt end 18 on various surfaces that could be damaging to the grip butt end 18.
The grip body 22 is formed from a material with a hardness that is measured using the Shore A Hardness Scale. The grip body 22 has a Shore A hardness between 30 to 60. In some embodiments, the Shore A hardness is between 30 to 40, 40 to 50, or 50 to 60. In one embodiment, the Shore A hardness is 55. The end cap 12 has a higher Shore A hardness than the grip body 22 to compensate for rigidity that is lost near the portion of the end cap 12 that is not supported by the shaft. Additionally, the harder end cap 12 prevents the shaft from penetrating the end cap 12 during installation when the shaft is inserted into the grip body 22.
Referring to
Referring to
The end cap 312 differs from the end caps 112 and 212 in that the end cap lacks a lip near the first cavity 330. Referring to
The method of manufacturing the golf club grip described herein can comprise (1) forming an end cap, (2) forming a grip body, (3) securing the end cap to the grip body (4) inserting a shaft into the grip body and/or a second cavity, (5) securing a sensor within a first cavity. In step 1, the end cap comprises an upper portion and a lower portion. The upper portion includes a first cavity configured to house a sensor. The first cavity further comprises depressions designed for adhesive to flow around the sensor. The lower portion comprises flanges configured to couple with the grip body. The lower portion further comprises a second cavity configured to receive a shaft. In step 2, the grip body comprises a gripping surface and receiving arms. Wherein the gripping surface has a taper. The receiving arms are designed to complement the flanges of the end cap and provide a form of coupling between the two components. In steps 1 and 2, the end cap and grip body can both be molded. In step 3, the end cap and the grip body can be secured via the one or more flanges and the one or more receiving arms. In step 4 the shaft is inserted into the grip body and in some embodiments is also inserted into the second cavity. In step 5, the sensor can be secured within the first cavity with an adhesive, such as epoxy, or through a mechanical means, such as press-fitting. The depressions allow the adhesive to flow around the sensor increasing the surface are for adhesion.
A player test was conducted to compare the feel of two golf clubs having different grips. The golf clubs were similar but for the difference in the grip end cap constructions. The results compared the effect of the different end caps on player satisfaction and performance.
The first golf club comprised a grip (hereafter referred to as the “control grip”) having a traditional, non-tapered end cap. The second golf club comprised a grip (hereafter referred to as the “exemplary grip”) similar to the grip shown in
The player test involved fifteen players who participated in a survey that compared their experiences with the exemplary grip and the control aid devoid of a tapered end cap. The players tested each club head under similar conditions, where the golf club heads included similar shaft lengths and similar loft angles. Further, the player test was conducted on a typical surface.
After testing, the participants rated the grip performance and satisfaction based several parameters including their comfort and overall performance with the different grips. The grips were given a rating of between 1 to 5 for each of these parameters. A rating of 1 represented the lowest level of satisfaction, and a rating of 5 represented the highest level of satisfaction. The ratings in each category were averaged over the 15 participants.
The results of the player test are illustrated in Table 1 above. First, the players were asked, “How satisfied are you with the stability of the grip end in your hands during your swing?” The exemplary grip scored higher at a 4.06 than the control grip, which scored a 3.59. Of the surveyed players, 86% indicated they were “very satisfied,” or “satisfied” with how secure the exemplary grip felt. One player commented that his hands tended to slip off the wobbly control grip. Next, the players were asked, “How satisfied are you with the contour of the grip?” The exemplary grip again scored higher at a 3.82 than the control grip which scored a 3.53. Of the surveyed players, 73% indicated they were “very satisfied,” or “satisfied” by the natural feel of the contour. The players observed that the chamfer was very noticeable and helped naturally guide their hands to the gripping region. The players were then asked, “How satisfied are you with the ability to position your hands on the grip in the same position that you typically would on a grip without a measurement technology?” The exemplary grip again scored higher at a 3.81 than the control grip, scoring a 3.50. Of the surveyed players, 71% indicated they were “very satisfied,” or “satisfied” with how similar their grip felt to their normal grip when using the exemplary grip. When the players were asked to rate their overall satisfaction, the exemplary grip scored higher at a 3.71 than the control grip, only scoring a 3.21. Some players observed that the control grip felt heavier and longer than the exemplary grip. The survey concluded that most of the players had a better experience using the exemplary grip.
The tapered end cap provides advantages that are an improvement over the art. Removing material from the end cap upper portion (i.e. forming a chamfer or taper in the end cap) encourages the golfer to grip near the stable portion of the grip body. Additionally, the sensor is protected since the golfer is not leveraging against the flexible sensor housing. Based on the survey that was conducted, the tapered end cap can improve stability for players who grip near the end of a grip.
Clause 1. A golf club comprising a club head, a shaft, and a grip; wherein the grip comprises: a butt end, a tip end, a grip body, and an end cap; wherein the grip body comprises a first end, a second end, and one or more receiving arms; wherein the first end is opposite the second end, the first end is proximate to the butt end, and the second end is proximate to the tip end; wherein the receiving arms are formed near the first end; wherein the end cap comprises an upper portion, a lower portion, a floor wall, and an outer diameter; wherein the floor wall comprises an upper surface, proximate to the upper portion, and a lower surface, proximate to the lower portion; wherein the floor wall defines a boundary between the upper portion and the lower portion; wherein the upper portion comprises a first circumferential wall, the upper surface, a non-gripping surface, and a lip; wherein the upper surface is recessed into the upper portion via the first circumferential wall to form a first cavity that harbors a sensor; wherein the lower portion comprises a second circumferential wall, the lower surface, and one or more flanges, wherein the lower surface is recessed into the lower portion via the second circumferential wall to form a second cavity; wherein the one or more flanges are received within the one or more receiving arms to form a connection between the end cap and the grip body.
Clause 2. The golf club of clause 1, wherein the one or more receiving arms and the one or more flanges have complimentary geometries that form a tight connection to secure the end cap to the grip body.
Clause 3. The golf club of clause 1, wherein the one or more receiving arms can be 1 receiving arm, 2 receiving arms, 3 receiving arms, 4 receiving arms, or any suitable number of receiving arms.
Clause 4. The golf club of clause 1, wherein the one or more flanges can be 1 flange, 2 flanges, 3 flanges, 4 flanges, or any suitable number of flanges.
Clause 5. The golf club of clause 1, wherein a maximum outer diameter of the end cap further defines the boundary between the upper portion and the lower portion.
Clause 6. The golf club of clause 1, wherein a surface between the first end and the second end defines a gripping surface, and a non-gripping surface is defined by the end cap.
Clause 7. The golf club of clause 1, wherein the receiving arms form an outer circumference of the connection between the end cap and the grip body.
Clause 8. The golf club of clause 1, wherein the sensor is secured with an adhesive, or through a mechanical means, such as press-fitting.
Clause 9. The golf club of clause 1, wherein the grip body and the end cap are formed integrally, secured together with an adhesive, or otherwise connected to form the grip.
Clause 10. The golf club of clause 1, wherein: the first cavity comprises a first cavity diameter; and the lip is above the first cavity, and the lip comprises a lip diameter smaller than the first cavity diameter to secure the sensor in place.
Clause 11. The golf club of clause 1, wherein the upper surface comprises a plurality of depressions to allow an adhesive to flow around the sensor.
Clause 12. The golf club of clause 11, wherein the depressions radiate outward from a center of the upper surface.
Clause 13. The golf club of clause 1, wherein the non-gripping surface can be tapered, rounded, chamfered, or otherwise reshaped.
Clause 14. The golf club of clause 1, wherein the grip has a longitudinal axis through a geometric center of the grip; wherein the non-griping surface defines a tangent plane and a taper angle that is measured between the longitudinal axis and the tangent plane, and the taper angle is between 15 degrees and 80 degrees.
Clause 15. The golf club of clause 1, wherein the end cap has a greater Shore A hardness than the grip body.
Clause 16. The golf club of clause 1, wherein the grip has a longitudinal axis through a geometric center of the grip; wherein the first cavity defines a cavity height measured along the longitudinal axis, and wherein the cavity height is between 0.3 inches and 0.4 inches.
Clause 17. The golf club of clause 1, wherein the sensor is harbored within the upper portion of the end cap.
Clause 18. The golf club of clause 1, wherein the end cap further defines a maximum outer diameter, wherein the maximum outer diameter is offset from the butt end of the grip by distance between 0.2 inch to 0.8 inch, and the non-gripping surface has a taper from the maximum outer diameter to a smaller outer diameter toward the butt end.
Clause 19. A method of manufacturing a grip comprising: forming an end cap, the end cap comprising an upper portion having a plurality of depressions, and a lower portion comprising one or more flanges; forming a grip body, the grip body comprising a first end, a second end, and one or more receiving arms, proximate to the first end; coupling the one or more flanges with the one or more receiving arms to form a secure connection between the end cap and the grip body; inserting a shaft into the grip body and the lower portion of the end cap; securing a sensor within the upper portion; and wherein the sensor is secured with an adhesive, or through a mechanical means, such as press-fitting.
Clause 20. The method of manufacturing of the grip of clause 19, wherein the sensor securing step further comprises allowing the adhesive to flow around the sensor via the plurality of depressions.
Clause 21. A golf club grip comprising: a butt end, a tip end, a grip body, and an end cap; wherein the grip body comprises a first end, a second end, and one or more receiving arms; wherein the first end is opposite the second end, the first end is proximate to the butt end, and the second end is proximate to the tip end; wherein the receiving arms are formed near the first end; wherein the end cap comprises an upper portion, a lower portion, a floor wall, and an outer diameter; wherein the floor wall comprises an upper surface, proximate to the upper portion, and a lower surface, proximate to the lower portion; wherein the floor wall defines a boundary between the upper portion and the lower portion; wherein the upper portion comprises a first circumferential wall, the upper surface, a non-gripping surface, and a lip; wherein the upper surface is recessed into the upper portion via the first circumferential wall to form a first cavity that harbors a sensor; wherein the lower portion comprises a second circumferential wall, the lower surface, and one or more flanges, wherein the lower surface is recessed into the lower portion via the second circumferential wall to form a second cavity; wherein the one or more flanges are received within the one or more receiving arms to form a connection between the end cap and the grip body.
Clause 22. The golf club grip of clause 21, wherein the one or more receiving arms and the one or more flanges have complimentary geometries that form a tight connection to secure the end cap to the grip body.
Clause 23. The golf club grip of clause 21, wherein the one or more receiving arms can be 1 receiving arm, 2 receiving arms, 3 receiving arms, 4 receiving arms, or any suitable number of receiving arms.
Clause 24. The golf club grip of clause 21, wherein the one or more flanges can be 1 flange, 2 flanges, 3 flanges, 4 flanges, or any suitable number of flanges.
Clause 25. The golf club grip of clause 21, wherein a maximum outer diameter of the end cap further defines the boundary between the upper portion and the lower portion.
Clause 26. The golf club grip of clause 21, wherein a surface between the first end and the second end defines a gripping surface, and a non-gripping surface is defined by the end cap.
Clause 27. The golf club grip of clause 21, wherein the receiving arms form an outer circumference of the connection between the end cap and the grip body.
Clause 28. The golf club grip of clause 21, wherein the sensor is secured with an adhesive, or through a mechanical means, such as press-fitting.
Clause 29. The golf club grip of clause 21, wherein the grip body and the end cap are formed integrally, secured together with an adhesive, or otherwise connected to form the grip.
Clause 30. The golf club grip of clause 21, wherein: the first cavity comprises a first cavity diameter; and the lip is above the first cavity, and the lip comprises a lip diameter smaller than the first cavity diameter to secure the sensor in place.
Clause 31. The golf club grip of clause 21, wherein the upper surface comprises a plurality of depressions to allow an adhesive to flow around the sensor.
Clause 32. The golf club grip of clause 21, wherein the depressions radiate outward from a center of the upper surface.
Clause 33. The golf club grip of clause 21, wherein the non-gripping surface can be tapered, rounded, chamfered, or otherwise reshaped.
Clause 34. The golf club grip of clause 21, wherein the grip has a longitudinal axis through a geometric center of the grip; wherein the non-griping surface defines a tangent plane and a taper angle that is measured between the longitudinal axis and the tangent plane, and the taper angle is between 15 degrees and 80 degrees.
Clause 35. The golf club grip of clause 21, wherein the end cap has a greater Shore A hardness than the grip body.
Clause 36. The golf club grip of clause 21, wherein the grip has a longitudinal axis through a geometric center of the grip; wherein the first cavity defines a cavity height measured along the longitudinal axis, and wherein the cavity height is between 0.3 inches and 0.4 inches.
Clause 37. The golf club grip of clause 21, wherein the sensor is harbored within the upper portion of the end cap.
Clause 38. The golf club grip of clause 21, wherein the end cap further defines a maximum outer diameter, wherein the maximum outer diameter is offset from the butt end of the grip by distance between 0.2 inch to 0.8 inch, and the non-gripping surface has a taper from the maximum outer diameter to a smaller outer diameter toward the butt end.
This claims the benefit of U.S. Provisional Application No. 63/138,729, filed Jan. 18, 2021, the contents of which are fully incorporated herein by reference.
Number | Date | Country | |
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63138729 | Jan 2021 | US |