Customizable Hang Angle Golf Clubs, Systems, and Related Methods
Embodiments of customizable hang angle golf clubs and related mechanisms are presented herein. Other examples, systems, and related methods are also disclosed herein.
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The present disclosure relates generally to sports equipment, and relates, more particularly, to customizable hang angle golf clubs, systems, and related methods.
BACKGROUNDSeveral sports, like golf, require equipment with features that can be selected or custom-fit to an individual's characteristics or preferences. For example, the recommended club shaft and/or club head may vary based on the individual's characteristics, such as skill, age or height. Once assembled, however, golf clubs normally have fixed, unchangeable characteristics. Accordingly, when determining suitable equipment for the individual, an unnecessarily large number of golf clubs must be available to test different combinations of, for example, club shafts and club heads. Such shortcomings create problems with respect to predicting and maintaining needed quantities of golf club components. Considering the above, further developments with respect to customizable golf clubs, systems, and related methods will ameliorate and/or address such shortcomings of current golf club technology.
The present disclosure may be better understood from a reading of the following detailed description of examples of embodiments, taken in conjunction with the accompanying figures.
For simplicity and clarity of illustration, the drawing figures illustrate the general manner of construction, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the present disclosure. Additionally, elements in the drawing figures are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of embodiments of the present disclosure. The same reference numerals in different figures denote the same elements.
The terms “first,” “second,” “third,” “fourth,” 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 “left,” “right,” “front,” “back,” “top,” “bottom,” “over,” “under,” 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 apparatus, methods, and/or articles of manufacture 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, mechanically or otherwise. Coupling (whether mechanical or otherwise) may be for any length of time, e.g., permanent or semi-permanent or only for an instant.
The absence of the word “removably,” “removable,” and the like near the word “coupled,” and the like does not mean that the coupling, etc. in question is or is not removable.
DETAILED DESCRIPTIONIn some examples, a golf club can comprise a club head and a shaft. The club head can comprise a heel portion, a toe portion, a hosel, a strikeface comprising a strikeface centerpoint, and a club head horizontal plane extending through the strikeface centerpoint. The shaft can be coupled to the hosel and can comprise a shaft lower portion comprising a shaft hosel end, and a shaft upper portion comprising a shaft grip end. An effective shaft axis can extend along a centerline of the shaft upper portion. The shaft can be configurable to accept and retain a shaft bend comprising any one of: (1) a first bend corresponding to a straight stroke swing style, (2) a second bend corresponding to a slight arc swing style, or (3) a third bend corresponding to a strong arc swing style. The shaft bend can be locatable, along a length of the shaft, between the shaft upper portion and the shaft lower portion. The shaft bend can comprises a shaft bend height above the club head horizontal plane. The club head horizontal plane can be at least one of substantially perpendicular to a vertical component of the effective shaft axis, or substantially parallel to a ground plane when the club head is at an address position.
In the same or other examples, a golf club system can comprise a first club head and a first shaft for a first golf club, and a second club head and a second shaft for a second golf club. The first club head can comprise a first hosel, a first strikeface with a first strikeface centerpoint, a first club head horizontal plane through the first strikeface centerpoint. The first shaft can comprise a first shaft bend located at a first bend height above the first club head horizontal plane. The second club head can comprise a second hosel, a second strikeface with a second strikeface centerpoint, and a second club head horizontal plane through the second strikeface centerpoint. The second shaft can comprise a second shaft bend located at a second bend height above the second club head horizontal plane. The first and second club heads can be substantially equal to each other. The first and second shaft bend heights can be different from each other. The first and second shafts can be substantially equal to each other, other than with respect to the first and second bend heights. The first shaft bend can be configured to impart a first hang angle to the first golf club, the first hang angle comprising a first one of a face-balanced hang angle, a mid-hang angle, or a toe-down hang angle. The second shaft bend is configured to impart a second hang angle to the second golf club, the second hang angle being different than the first hang angle and comprising a second one of the face-balanced hang angle, the mid-hang angle, or the toe-down hang angle.
In some implementations, a method for providing a golf club can comprise providing a shaft comprising a shaft length and configured to be coupled to a hosel of a club head, and imparting a shaft bend at a target shaft bend height along the shaft length. The target shaft bend height can correspond to a target swing style comprising one of a straight stroke swing style, a slight arc swing style, or a strong arc swing style. The target shaft bend height can be measured at the shaft bend and relative to a club head horizontal plane. The club head horizontal plane can pass through a strikeface centerpoint of the club head and can be at least one of substantially perpendicular to a vertical component of an effective shaft axis defined by the shaft, substantially parallel to a ground plane when the club head is at an address position.
Other examples and embodiments are further disclosed herein. Such examples and embodiments may be found in the figures, in the claims, and/or in the present description.
Turning to the drawings,
In some examples, club head 1100 can comprise a blade-type putter head, such that toe-down hang angle 3800 (
There can be other examples, however, where club head 1100 comprises another style of club head. For instance, club head 1100 could instead comprise a mallet-type putter head, such that toe-down hang angle 3800 (
Blade-type putter heads and mallet-type putter heads have different hang angle ranges because they have different locations for their respective centers of gravity. For example, the center of gravity for mallet-type putter heads lies further back from the strikeface than the center of gravity for blade-type putter heads. By increasing distance of the center of gravity from the strikeface, the range of achievable hang angles decreases, and smaller hang angle changes have greater effect on club head rotation or delivery.
The embodiments of
Based on such analysis, a golf club can be chosen or adjusted for the individual by selecting or adjusting the corresponding shaft bend of the golf club. For example, shaft bend 100 of golf club 1000 can be configured to impart to golf club 1000 swing characteristics, such as face-balanced hang angle 1800, suitable for or corresponding to a straight stroke swing style for the individual being fitted. Similarly, shaft bend 200 of golf club 2000 can be configured to impart to golf club 2000 swing characteristics, such as mid-hang hang angle 2800, suitable for or corresponding to a slight arc swing style for the individual being fitted. In addition, shaft bend 300 of golf club 1000 can be configured to impart to golf club 3000 swing characteristics, such as face-balanced hang angle 3800, suitable for or corresponding to a strong arc swing style for the individual being fitted.
In the present embodiments of
As seen in
In some examples, strikeface centerpoint 4150 can be located at a geometric centerpoint of strikeface 1150, a geometric centerpoint of a strikeplate of strikeface 1150, and/or at a geometric centerpoint of the front end of club head 1100. In the same or other examples, strikeface centerpoint 4150 can be located in accordance with the definition of a golf governing body such as the United States Golf Association (USGA). For example, strikeface centerpoint 4150 can be determined in accordance with Section 6.1 of the USGA's Procedure for Measuring the Flexibility of a Golf Clubhead (USGA-TPX3004, Rev. 1.0.0, May 1, 2008) (available at http://www.usga.org/equipment/testing/protocols/Procedure-For-Measuring-The-Flexibility-Of-A-Golf-Club-Head/).
As seen in
Shaft bends 100 (
In the same or other examples, the high bend height of shaft bend height 4100 for shaft bend 100 can be configured to impart face-balanced hang angle 1800 (
As can be seen in
In the present examples, intersection distance 6215 in golf club 3000 (
Considering the above, the shaft bend height can be used to adjust the intersection distance of the effective shaft axes relative to the strikeface centerpoint of the club head, such as to achieve a desired hang angle range and/or to suit a desired swing style. For example, intersection distance 5215 (
In some implementations, the shaft bend height can be used to set or adjust the shaft intersection distance, relative to the strikeface centerpoint, to establish desired intersection ratios of the shaft intersection distances relative to a club head length of the club head. In such implementations, the club head length can be measured between opposite heel and toe ends of the club head. For instance, as seen in
Thus, with respect to the embodiment of
As can be seen in
In the present examples of
Method 10000 comprises block 10100 for providing a shaft configured to accept a shaft bend and to be coupled to a hosel of a golf club head of the golf club. In some examples, the golf club head can be similar to golf club head 1100 (
Method 10000 also comprises block 10200 for imparting the shaft bend at a target shaft bend height along the shaft length of the shaft. In some examples, the target shaft bend height may be similar to one of shaft bend height 4100 (
In some examples, block 10200 of method 10000 comprises sub-block 10210 for configuring the golf club, via the shaft bend, for a target swing style comprising one of a straight stroke swing style, a slight arc swing style, or a strong arc swing style. For instance, the shaft bend may be defined within a range of shaft bend heights, and/or within a range of shaft bend angles, configured to establish one or more swing characteristics for the golf club to complement a measured swing style of an individual being fitted, whether the measured swing style comprises the straight stroke swing style, the slight arc swing style, or the strong arc swing style described above with respect to
In the same or other examples, block 10200 of method 10000 also can comprise sub-block 10220 for configuring the shaft, via the shaft bend, to impart a target hang angle for the golf club. In some implementations, the target hang angle may be similar to hang angle 1800 (
Imparting the shaft bend onto the shaft in block 10200 can also be accomplished by establishing a desired intersection distance between a strikeface centerpoint of a strikeface of the golf club head and an intersection point where an effective shaft axis of the shaft intersects a club head horizontal plane. In some examples, the strikeface centerpoint can be similar to strikeface centerpoint 4150 of strikeface 1150 (
After block 10200, method 10000 can further comprise block 10300 for coupling the shaft to the hosel of the golf club head. As an example, the result of the coupling can be similar to what is shown in
In some examples, one or more of the different blocks of method 10000 can be combined into a single block or performed simultaneously, and/or the sequence of such blocks can be changed. For example, in some implementations, sub-blocks 10210 and 10220 may be combined if desired. In the same or other implementations, block 10300 can precede block 10200. There also can be examples where some of the blocks of method 10000 can be subdivided into several sub-blocks. As an example, block 10200 may further comprise a sub-block for configuring the golf club, via the shaft bend, to comprise an intersection distance similar to one of intersection distances 4215 (
There can also be examples where method 10000 can comprise further or different blocks. As an example, method 10000 may comprise another block for measuring a swing style of an individual being fitted, and/or for imparting the shaft bend of block 10200 based on the swing style of the individual being fitted. In addition, there may be examples where method 10000 can comprise only part of the steps described above. For instance, block 10300 may be optional in some implementations. Other variations can be implemented for method 10000 without departing from the scope of the present disclosure.
Although the customizable hang angle golf clubs, systems, and related methods herein have been described with reference to specific embodiments, various changes may be made without departing from the spirit or scope of the present disclosure. As an example, golf club shaft 1200 can be provided with a telescoping mechanism to permit the shaft bend of the golf club to be adjustable between shaft bend height 4100 (
Additional examples of such changes and others have been given in the foregoing description. Other permutations of the different embodiments having one or more of the features of the various figures are likewise contemplated. Accordingly, the specification, claims, and drawings herein are intended to be illustrative of the scope of the disclosure and is not intended to be limiting. It is intended that the scope of this application shall be limited only to the extent required by the appended claims.
The customizable hang angle golf clubs, systems, and related methods discussed herein may be implemented in a variety of embodiments, and the foregoing discussion of certain of these embodiments does not necessarily represent a complete description of all possible embodiments. Rather, the detailed description of the drawings, and the drawings themselves, disclose at least one preferred embodiment, and may disclose alternative embodiments.
All elements claimed in any particular claim are essential to the embodiment claimed in that particular claim. Consequently, replacement of one or more claimed elements constitutes reconstruction and not repair. Additionally, benefits, other advantages, and solutions to problems have been described with regard to specific embodiments. The benefits, advantages, solutions to problems, and any element or elements that may cause any benefit, advantage, or solution to occur or become more pronounced, however, are not to be construed as critical, required, or essential features or elements of any or all of the claims, unless such benefits, advantages, solutions, or elements are expressly stated in such claims.
As the rules to golf may change from time to time (e.g., new regulations may be adopted or old rules may be eliminated or modified by golf standard organizations and/or governing bodies such as the United States Golf Association (USGA), the Royal and Ancient Golf Club of St. Andrews (R&A), etc.), golf equipment related to the apparatus, methods, and articles of manufacture described herein may be conforming or non-conforming to the rules of golf at any particular time. Accordingly, golf equipment related to the apparatus, methods, and articles of manufacture described herein may be advertised, offered for sale, and/or sold as conforming or non-conforming golf equipment. The apparatus, methods, and articles of manufacture described herein are not limited in this regard.
While the above examples may be described in connection with a putter-type golf club, the apparatus, methods, and articles of manufacture described herein may be applicable to other types of golf club such as a driver-type golf club, a fairway wood-type golf club, a hybrid-type golf club, an iron-type golf club, or a wedge-type golf club. Alternatively, the apparatus, methods, and articles of manufacture described herein may be applicable other type of sports equipment such as a hockey stick, a tennis racket, a fishing pole, a ski pole, etc.
Moreover, embodiments and limitations disclosed herein are not dedicated to the public under the doctrine of dedication if the embodiments and/or limitations: (1) are not expressly claimed in the claims; and (2) are or are potentially equivalents of express elements and/or limitations in the claims under the doctrine of equivalents.
Claims
1. A golf club comprising:
- a club head comprising: a heel portion; a toe portion; a hosel; a strikeface comprising a strikeface centerpoint; and a club head horizontal plane extending through the strikeface centerpoint;
- a shaft coupled to the hosel and comprising: a shaft lower portion comprising a shaft hosel end; and a shaft upper portion comprising a shaft grip end;
- and
- an effective shaft axis extending along a centerline of the shaft upper portion;
- wherein: the shaft is configurable to accept and retain a shaft bend comprising any one of: a first bend corresponding to a straight stroke swing style; a second bend corresponding to a slight arc swing style; or a third bend corresponding to a strong arc swing style; the shaft bend is locatable, along a length of the shaft, between the shaft upper portion and the shaft lower portion; the shaft bend comprises a shaft bend height above the club head horizontal plane; and the club head horizontal plane is at least one of: substantially perpendicular to a vertical component of the effective shaft axis; or substantially parallel to a ground plane when the club head is at an address position.
2. The golf club of claim 1, wherein:
- the straight stroke swing style comprises a swing rotation of approximately zero degrees to approximately 3.5 degrees;
- the slight arc swing style comprises a swing rotation of approximately 3.5 degrees to approximately 7.5 degrees; and
- the strong arc swing style comprises a swing rotation greater than approximately 7.5 degrees; and
- the vertical component of the effective shaft axis is substantially perpendicular to at least one of: a top end of the hosel of the club head; a top end of the strike face; or the ground plane when the club head is at the address position.
3. The golf club of claim 1, wherein:
- the shaft bend corresponds to a measured swing style of an individual, the measured swing style being correlated to one of the straight stroke swing style, the slight arc swing style, or the strong arc swing style based on one or more measured golf swings of the individual; and
- the golf club is a putter.
4. The golf club of claim 1, wherein:
- the shaft is configurable to accept the shaft bend such that: for the straight stroke swing style, the shaft bend height of the first bend comprises a high bend height; for the slight arc swing style, the shaft bend height of the second bend comprises a medium bend height; for the strong arc swing style, the shaft bend height of the third bend comprises a low bend height;
- the high bend height is greater than the medium bend height; and
- the medium bend height is greater than the low bend height.
5. The golf club of claim 4, wherein:
- when the shaft comprises the first bend at the high bend height: the golf club comprises a face-balanced hang angle;
- when the shaft comprises the second bend at the medium bend height: the golf club comprises a mid-hang angle; and
- when the shaft comprises the third bend at the low bend height: the golf club comprises a toe-down hang angle.
6. The golf club of claim 1, wherein:
- when the shaft bend corresponds to the straight stroke swing style: the golf club comprises a face-balanced hang angle;
- when the shaft bend corresponds to the slight arc swing style: the golf club comprises a mid-hang angle; and
- when the shaft bend corresponds to the strong arc swing style: the golf club comprises a toe-down hang angle.
7. The golf club of claim 6, wherein:
- when the club head comprises a blade-type putter head: the face-balanced hang angle is less than approximately 16 degrees; the mid-hang hang angle is approximately 16 degrees to approximately 48 degrees; and the toe-down hang angle is greater than approximately 48 degrees;
- and
- when the club head comprises a mallet-type putter head: the face-balanced hang angle is less than approximately 7 degrees; the mid-hang hang angle is approximately 7 degrees to approximately 23 degrees; and the toe-down hang angle is greater than approximately 23 degrees.
8. The golf club of claim 1, wherein:
- if the shaft is configured for the straight stroke swing style: the shaft bend height is greater than approximately 95 mm above the club head horizontal plane;
- if the shaft is configured for the slight arc swing style: the shaft bend height is at approximately 70 mm to approximately 100 mm above the club head horizontal plane;
- and
- if the shaft is configured for the strong arc swing style: the shaft bend height is less than approximately 85 mm above the club head horizontal plane.
9. The golf club of claim 1, wherein:
- the shaft comprises: an effective shaft axis extending along a centerline of the shaft upper portion;
- if the shaft is configured for the straight stroke swing style: the effective shaft axis intersects the club head horizontal plane at a first intersection distance from the strikeface centerpoint;
- if the shaft is configured for the slight arc swing style: the effective shaft axis intersects the club head horizontal plane at a second intersection distance from the strikeface centerpoint, the second distance being greater than the first distance;
- and
- if the shaft is configured for the strong arc swing style: the effective shaft axis intersects the club head horizontal plane at a third intersection distance from the strikeface centerpoint, the third distance being greater than the second distance.
10. The golf club of claim 9, wherein:
- the first intersection distance is less than approximately 1.8 mm;
- the second intersection distance is approximately 1.8 mm to approximately 16.5 mm; and
- the third intersection distance is greater than approximately 16.5 mm.
11. The golf club of claim 9, wherein:
- the club head comprises: a club head length between opposite ends of the heel portion and toe portions;
- when the shaft is configured for the straight stroke swing style: a first intersection ratio, between the first intersection distance and the club head length, is less than approximately 0.05.
- when the shaft is configured for the slight arc swing style: a second intersection ratio, between the second intersection distance and the club head length, is between approximately 0.05 to approximately 0.155;
- and
- when the shaft is configured for the strong arc swing style: a third intersection ratio, between the third intersection distance and the club head length, is greater than approximately 0.155.
12. The golf club of claim 1, wherein:
- the shaft bend defines a shaft bend angle between the shaft upper portion and the shaft lower portion; and
- the shaft bend angle is the same regardless of whether the shaft bend comprises the first bend for the straight stroke swing style, the second bend for the slight arc swing style, or the third bend for the strong arc swing style.
13. The golf club of claim 12, wherein:
- the shaft bend angle is approximately 146 degrees to approximately 174 degrees.
14. The golf club of claim 1, wherein:
- the hosel is configured to position the shaft lower portion in at least one of: a shaft-to-strikeface angle, between the shaft lower portion and the club head horizontal plane at the strikeface, and non-perpendicular to the club head horizontal plane; or a shaft-to-heel angle, between the shaft lower portion and the club head horizontal plane at the heel portion, and non-perpendicular to the club head horizontal plane.
15. The golf club of claim 14, wherein the shaft-to-strikeface angle is acute.
16. The golf club of claim 14, wherein:
- the shaft-to-strikeface angle is approximately 70 degrees to approximately 100 degrees; and
- the shaft-to-heel angle is approximately 105 degrees to approximately 75 degrees.
17. The golf club of claim 1, wherein:
- the shaft comprises: an effective shaft axis extending along a centerline of the shaft upper portion;
- if the shaft comprises the first bend: the effective shaft axis is offset from the strikeface by a first offset distance;
- if the shaft comprises the second bend: the effective shaft axis is offset from the strikeface by a second offset distance;
- if the shaft comprises the third bend: the effective shaft axis is offset from the strikeface by a third offset distance;
- the first offset distance is greater than the second offset distance;
- the second offset distance is greater than the third offset distance; and
- the first, second and third offset distances are measured relative to a positive offset direction that is perpendicular to the strikeface at the strikeface centerpoint and points forward of the golf club.
18. A golf club system comprising:
- a first club head for a first golf club, the first club head comprising: a first hosel; a first strikeface with a first strikeface centerpoint; and a first club head horizontal plane through the first strikeface centerpoint;
- a first shaft for the first golf club, the first shaft comprising: a first shaft bend located at a first bend height above the first club head horizontal plane;
- a second club head for a second golf club, the second club head comprising: a second hosel; a second strikeface with a second strikeface centerpoint; and a second club head horizontal plane through the second strikeface centerpoint;
- and
- a second shaft for the second golf club, the second shaft comprising: a second shaft bend located at a second bend height above the second club head horizontal plane;
- wherein: the first and second club heads are substantially equal to each other; the first and second shaft bend heights are different from each other; the first and second shafts are substantially equal to each other, other than with respect to the first and second bend heights; the first shaft bend is configured to impart a first hang angle to the first golf club, the first hang angle comprising a first one of: a face-balanced hang angle; a mid-hang angle; or a toe-down hang angle; the second shaft bend is configured to impart a second hang angle to the second golf club, the second hang angle being different than the first hang angle and comprising a second one of: the face-balanced hang angle; the mid-hang angle; or the toe-down hang angle.
19. The golf club system of claim 18, wherein:
- the first hang angle corresponds to a first one of: a straight stroke swing style; a slight arc swing style; or a strong arc swing style;
- the hang angle corresponds to a second one of: the straight stroke swing style; the slight arc swing style; or the strong arc swing style;
- and
- at least one of the first or second shaft bends comprises a post-manufacture bend.
20. The golf club system of claim 18, further comprising:
- a third club head for a third golf club, the third club head comprising: a third hosel; a third strikeface with a third strikeface centerpoint; and a third club head horizontal plane through the third strikeface centerpoint;
- and
- a third shaft for the third golf club, the third shaft comprising: a third shaft bend located at a third bend height above the third club head horizontal plane;
- wherein: the first, second, and third club heads are substantially equal to each other; the first, second, and third shaft bend heights are different from each other; the first, second, and third shafts are substantially equal to each other, other than with respect to the first, second, and third bend heights; the third shaft bend is configured to impart a third hang angle to the third golf club, the third hang angle being different than the first and second hang angles and comprising a third one of: the face-balanced hang angle; the mid-hang angle; or the toe-down hang angle.
21. A method for providing a golf club, the method comprising:
- providing a shaft comprising a shaft length and configured to be coupled to a hosel of a club head; and
- imparting a shaft bend at a target shaft bend height along the shaft length;
- wherein: the target shaft bend height corresponds to a target swing style comprising one of: a straight stroke swing style; a slight arc swing style; or a strong arc swing style; the target shaft bend height is measured at the shaft bend and relative to a club head horizontal plane, the club head horizontal plane passing through a strikeface centerpoint of the club head and being at least one of: substantially perpendicular to a vertical component of an effective shaft axis defined by the shaft; or substantially parallel to a ground plane when the club head is at an address position.
22. The method of claim 21, further comprising:
- coupling the shaft to the hosel of the club head prior to imparting the shaft bend.
23. The method of claim 21, further comprising:
- determining the target swing style for an individual based on one or more measured golf swings of the individual and prior to imparting the shaft bend onto the shaft for the individual.
24. The method of claim 21, wherein:
- for the strong arc swing style, the target shaft bend height comprises a low shaft bend height;
- for the slight arc swing style, the target shaft bend height comprises a medium shaft bend height greater than the low shaft bend height; and
- for the straight stroke swing style, the target shaft bend height comprises a high shaft bend height greater than the medium shaft bend height.
25. The method of claim 24, wherein:
- imparting the shaft bend comprises: configuring the golf club for a face-balanced hang angle if the target shaft bend height comprises the high shaft bend height; configuring the golf club for a mid-hang angle if the target shaft bend height comprises the medium shaft bend height; and configuring the golf club for a toe-down hang angle if the target shaft bend height comprises the low shaft bend height.
26. The method of claim 25, wherein:
- when the club head comprises a mallet-type putter head: the face-balanced hang angle is less than approximately 16 degrees; the mid-hang hang angle is approximately 16 degrees to approximately 48 degrees; and the toe-down hang angle is greater than approximately 48 degrees;
- and
- when the club head comprises a blade-type putter head: the face-balanced hang angle is less than approximately 7 degrees; the mid-hang hang angle is approximately 7 degrees to approximately 23 degrees; and the toe-down hang angle is greater than approximately 23 degrees.
27. The method of claim 24, wherein:
- the shaft bend defines a shaft bend angle between a shaft upper portion and a shaft lower portion of the shaft; and
- the shaft bend angle is the same regardless of whether the shaft bend height comprises the low shaft bend height, the medium shaft bend height, or the high shaft bend height;
- the shaft bend angle is approximately 146 degrees to approximately 174 degrees;
- the straight stroke swing style comprises a swing rotation of approximately zero degrees to approximately 3.5 degrees;
- the slight arc swing style comprises a swing rotation of approximately 3.5 degrees to approximately 7.5 degrees;
- the strong arc swing style comprises a swing rotation of above approximately 7.5 degrees;
- the high shaft bend height is greater than approximately 95 mm above the club head horizontal plane;
- the medium shaft bend height is approximately 70 mm to approximately 100 mm above the club head horizontal plane; and
- the low shaft bend height is less than approximately 85 mm above the club head horizontal plane.
28. The method of claim 21, wherein:
- imparting the shaft bend comprises: imparting the shaft bend between: a shaft lower portion comprising a shaft hosel end; and a shaft upper portion comprising a shaft grip end, the effective shaft axis extending along a centerline of the shaft upper portion; and imparting the shaft bend such that, when the shaft is coupled to the hosel: if the target swing style comprises the straight stroke swing style: the effective shaft axis intersects the club head horizontal plane at a first intersection distance from the strikeface centerpoint; if the target swing style comprises the slight arc swing style: the effective shaft axis intersects the club head horizontal plane at a second intersection distance from the strikeface centerpoint, the second distance being greater than the first distance; and if the target swing style comprises the strong arc swing style: the effective shaft axis intersects the club head horizontal plane at a third distance from the strikeface centerpoint, the third distance being greater than the second distance.
29. The method of claim 28, wherein:
- if the target swing style comprises the straight stroke swing style: the first intersection distance from the strikeface centerpoint is less than approximately 1.8 mm;
- if the target swing style comprises the slight arc swing style: the second intersection distance from the strikeface centerpoint is approximately 1.8 mm to approximately 16.5 mm;
- and
- if the target swing style comprises the strong arc swing style: the third intersection distance from the strikeface centerpoint is greater than approximately 16.5 mm.
30. The method of claim 28, wherein:
- if the target swing style comprises the straight stroke swing style: a first intersection ratio, between the first intersection distance and a club head length extended between heel and toe ends of the club head, is less than approximately 0.05.
- if the target swing style comprises the slight arc swing style: a second intersection ratio, between the second intersection distance and the club head length, is between approximately 0.05 to approximately 0.155;
- and
- if the target swing style comprises the strong arc swing style: a third intersection ratio, between the third intersection distance and the club head length, is greater than approximately 0.155.
Type: Application
Filed: Oct 10, 2012
Publication Date: Apr 10, 2014
Applicant: KARSTEN MANUFACTURING CORPORATION (Phoenix, AZ)
Inventors: Ryan M. Stokke (Phoenix, AZ), Bradley D. Schweigert (Anthem, AZ)
Application Number: 13/648,927
International Classification: A63B 53/00 (20060101);