WO2002085469A1 - Aerodynamic pattern for a golf ball - Google Patents

Aerodynamic pattern for a golf ball Download PDF

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Publication number
WO2002085469A1
WO2002085469A1 PCT/US2002/012194 US0212194W WO02085469A1 WO 2002085469 A1 WO2002085469 A1 WO 2002085469A1 US 0212194 W US0212194 W US 0212194W WO 02085469 A1 WO02085469 A1 WO 02085469A1
Authority
WO
WIPO (PCT)
Prior art keywords
dimples
golf ball
diameter
disposed
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2002/012194
Other languages
English (en)
French (fr)
Inventor
Steven S. Ogg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Topgolf Callaway Brands Corp
Original Assignee
Callaway Golf Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Callaway Golf Co filed Critical Callaway Golf Co
Publication of WO2002085469A1 publication Critical patent/WO2002085469A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/0004—Surface depressions or protrusions
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/0004—Surface depressions or protrusions
    • A63B37/0006—Arrangement or layout of dimples
    • A63B37/00065—Arrangement or layout of dimples located around the pole or the equator
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/0004—Surface depressions or protrusions
    • A63B37/002—Specified dimple diameter
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/0004—Surface depressions or protrusions
    • A63B37/0021—Occupation ratio, i.e. percentage surface occupied by dimples
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/0023—Covers
    • A63B37/0029—Physical properties
    • A63B37/0033—Thickness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/005—Cores
    • A63B37/006—Physical properties
    • A63B37/0064—Diameter
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/007—Characteristics of the ball as a whole
    • A63B37/0077—Physical properties
    • A63B37/0089—Coefficient of drag
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00—Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003—Golf balls
    • A63B37/007—Characteristics of the ball as a whole
    • A63B37/0077—Physical properties
    • A63B37/009—Coefficient of lift

Definitions

  • the present invention relates to a golf ball. More specifically, the present invention relates to a dimple pattern for a golf ball in which the dimple pattern has different sizes of dimples.
  • brambles pads rather than dents
  • the ATTI pattern was an octahedron pattern, split into eight concentric straight line rows, which was
  • the number of different dimples on a golf ball surface has also increased with the surface area coverage.
  • the ATTI pattern disclosed a dimple pattern with
  • dimples for a golf ball only has value if such a golf ball is commercialized and available for the typical golfer to play.
  • dimple patterns have been based on the sectional shapes
  • 5,201,522 discloses a golf ball dimple pattern having pentagonal formations with
  • U.S. Patent Number 4,880,241 discloses a golf ball dimple pattern having a modified icosahedron pattern wherein small
  • triangular sections lie along the equator to provide a dimple-free equator.
  • the present invention provides a novel dimple pattern that reduces high
  • the present invention is able to
  • One aspect of the present invention is a dimple pattern on a golf ball in
  • the dimple pattern has at least eighteen different sets of dimples.
  • the dimples cover at least 87% of the surface of the golf ball.
  • Another aspect of the present invention is a golf ball having at least 382
  • the 382 dimples are partitioned into at least eleven different sets of
  • Each of the eleven different sets of dimples has a different diameter
  • the 382 dimples cover at least 87% of the surface
  • Yet another aspect of the present invention is a golf ball having a core and
  • the core has a diameter of 1.50 inches to 1.56 inches, and is composed of
  • the cover encompasses the core and has a thickness of 0.05 inch to 0.10 inch.
  • the cover is preferably composed of an ionomer blend of material.
  • the 382 dimples are partitioned into at
  • dimples have a different diameter than any other set of dimples.
  • FIG. 1 is a cross-sectional view of a two-piece golf ball of the present invention.
  • FIG. 1A is a cross-sectional view of a three-piece golf ball of the present invention.
  • FIG. 2 is an equatorial view of a preferred embodiment of a golf ball of the present invention.
  • FIG. 3 is an equatorial view of a preferred embodiment of a golf ball of the present invention.
  • FIG. 4 is a polar view of the golf ball of FIG. 1.
  • FIG. 5 is an isolated partial cross-sectional view of a dimple to illustrate the definition of the entry radius.
  • FIG. 6 is an enlarged half cross-sectional view of a typical dimple of a
  • FIG. 7 is an enlarged half cross-sectional view of a dimple of a eleventh set of dimples of the golf ball of the present invention.
  • FIG. 8 is an enlarged half cross-sectional view of a dimple of a second set
  • FIG. 9 is an enlarged half cross-sectional view of a dimple of a first set of dimples of the golf ball of the present invention.
  • FIG. 10 is an enlarged half cross-sectional view of atypical dimple of a sixth set of dimples of the golf ball of the present invention.
  • FIG. 11 is a graph of the lift coefficient for a Reynolds number of 70,000
  • a golf ball is generally designated 20.
  • ball 20 is preferably a two-piece with a solid core and a cover such as disclosed in
  • the golf ball 20 is
  • FIG. 1 A Such a three-piece golf ball 20 is
  • aerodynamic pattern of the present invention may by utilized on other two-piece
  • a cover 21 or 21a of the golf ball 20 may be any suitable material.
  • preferred cover 21 is composed of a thermoplastic material such as an ionomer
  • thermosetting material such as a polyurethane
  • the golf ball is a three-piece golf ball 20, as shown in FIG. 1 A
  • the intermediate layer 21b is preferably composed of an ionomer material while the cover 21a is
  • the golf ball 20 may have a finish of a basecoat
  • a core 23 of the golf ball is preferably
  • the golf ball 20 has a surface 22.
  • a first pole 30 is located ninety degrees along a
  • first plurality of dimples 40 there is a first plurality of dimples 40, a second
  • dimples 46 (including 46a-46f), a fifth plurality of dimples 48, a sixth plurality of
  • dimples 50 (including 50a), a seventh plurality of dimples 52, an eighth plurality
  • dimples 54 a ninth plurality of dimples 56, a tenth plurality of dimples 58, and
  • each of the first plurality of dimples 40 has
  • each of the eleventh plurality of dimples 60 has the smallest diameter dimples.
  • the diameter of a dimple is measured from a
  • the surface inflection points 100 are where the land surface 22 ends and where the dimples begin.
  • Each of the second plurality of dimples 42 has a smaller diameter than the diameter of each of the first plurality of dimples
  • Each of the third plurality of dimples 44 has a smaller diameter than the
  • each of the second plurality of dimples 42 has a smaller diameter than the fourth plurality of dimples 46 (including 46a-46f)
  • Each of the fifth plurality of dimples 48 has a diameter that is equal to or smaller than the diameter of each of
  • each of the seventh plurality of dimples 52 has a smaller diameter than the diameter of each of the fifth plurality of dimples 48.
  • Each of the seventh plurality of dimples 52 has a smaller diameter
  • Each of the eighth plurality of dimples 54 has a smaller diameter than the diameter of
  • each of the eighth plurality of dimples 54 has a smaller diameter than the diameter of each of the eighth plurality of dimples 54.
  • Each of the tenth plurality of dimples 58 has a smaller diameter than the diameter of each of the ninth plurality of dimples 56.
  • Each of the eleventh plurality of dimples 60 has a smaller diameter than the diameter of each of the tenth plurality of dimples 58.
  • the fourth plurality of dimples 46 are the most numerous.
  • the eleventh plurality of dimples 60 is the least.
  • Table One provides a description of the preferred embodiment. Table One
  • dimple diameter in inches from inflection point to inflection point
  • chord depth in inches measured from the inflection point to the bottom of the dimple at the center
  • entry angle for each dimple entry radius for each dimple (in inches) and number of dimples.
  • the two dimples of the eleventh set of dimples 60 are each disposed on
  • Each of the ninth set of dimples 56 is adjacent one of
  • the five dimples of the ninth set of dimples 56 that are disposed within the second hemisphere 28 are each an equal distance
  • edge radius is a value utilized in conjunction with the entry
  • first and second derivatives of the two Bezier curves are forced to be equal at this point defined by the edge radius and the entry angle, as shown in FIG. 5A.
  • FIGS. 6-10 illustrate the half cross-sectional views of dimples for some of the different sets of dimples.
  • a half cross-sectional view of a typical dimple of the fourth set of dimples 46c is shown in FIG. 6.
  • chord depth CD-CD is approximately 0.0824 inch
  • the entry angle EA 46c is approximately 14.7068 degrees, and the entry radius ER 46c is approximately 0.0343 inch.
  • FIG. 7 A half cross-sectional view of a dimple of the eleventh set of dimples 60 is shown in FIG. 7.
  • the dimple radius R d60 of the dimple 60 is approximately
  • the entry angle EA 60 is approximately 20.3487 degrees, and the entry
  • the entry angle for each of the two dimples 60 of the eleventh set of dimples is the largest entry angle for a dimple in the preferred embodiment.
  • a half cross-sectional view of a dimple of the second set of dimples 42 is
  • the dimple radius R d42 of the dimple 42 is approximately 0.0839 inch
  • the entry angle EA 42 is approximately 13.3718 degrees
  • the entry radius ER 42 is approximately 0.0351 inch.
  • the entry angle for each of the sixty dimples 42 of the second set of dimples is the smallest entry angle for a dimple in the preferred embodiment.
  • a half cross-sectional view of a, dimple of the seventh set of dimples 52 is
  • the dimple radius R 52 of the dimple 52 is approximately 0.0780 inch
  • the entry angle EA 52 is approximately 14.7334 degrees
  • the entry radius ER 52 is approximately 0.0428 inch.
  • the entry radius for each of the twenty dimples 52 of the seventh set of dimples is the largest entry radius for a dimple in
  • the ten dimples of the seventh set of dimples 52 that are disposed within the second hemisphere 28 are each an equal distance
  • a half cross-sectional view of a dimple of the sixth set of dimples 50 is
  • the dimple radius R d50 of the dimple 50 is approximately 0.0793 inch
  • the entry angle EA 50 is approximately 15.2711 degrees
  • the entry angle EA 50 is approximately 15.2711 degrees
  • radius ER 50 is approximately 0.0258 inch.
  • the entry radius for each of the ten dimples 50 of the seventh set of dimples is the smallest entry radius for a dimple
  • Alternative embodiments of the dimple pattern of the present invention may vary in the number of dimples, diameters, depths, entry angle and/or entry radius. Most common alternatives will not have any dimples at the poles 30 and 32. Other common alternatives will have the same number of dimples, but with less variation in the diameters.
  • the force acting on a golf ball in flight is calculated by the
  • Cj_ is the lift coefficient
  • Cry is the drag coefficient
  • A is the maximum
  • the drag coefficient, C ) t and the lift coefficient, C ⁇ may be calculated using the following equations:
  • the Reynolds number R is a dimensionless parameter that quantifies the ratio of inertial to viscous forces acting on an object moving in a fluid. Turbulent flow for a dimpled golf ball occurs when R is greater than 40000. If R is less than 40000, the flow may be laminar. The turbulent flow of air about a dimpled golf
  • the Reynolds number R is calculated from the following equation:
  • ⁇ is the absolute viscosity of air (3.74 x 10 "7
  • FIG. 11 is a graph of the lift coefficient for a Reynolds number of 70,000 at 2000 rotations per minute versus the drag coefficient for a Reynolds number of
  • the golf balls 20 with the dimple pattern of the present invention were identical to The golf balls 20 with the dimple pattern of the present invention.
  • the aerodynamics of the dimple pattern of the present invention provides a greater lift with a reduced drag thereby translating into a golf ball 20 that travels a greater distance than golf balls of
  • the golf ball 20 of the present invention is the only one that combines a lower drag coefficient at high speeds, and a greater lift coefficient at low speeds. Specifically, as shown in FIG. 11, none of the other
  • golf balls have a lift coefficient, C£ t greater than 0.19 at a Reynolds number of
  • the golf ball 20 of the present invention is the only golf ball that has a lift coefficient, C ⁇ greater than 0.20 at a Reynolds number of 70,000, and a drag coefficient Cry less than 0.235 at a Reynolds number of 180,000. Yet further, the golf ball 20 of the present invention is the only golf ball that has a lift coefficient, ⁇ greater than 0.19 at a
  • the golf ball 20 of the present invention is the only golf ball that has a lift coefficient, ⁇ greater than 0.21 at a Reynolds number of 70,000,
  • the golf ball 20 of the present invention is the only golf
  • the golf ball 20 has a dimple pattern that enables the golf ball 20 to

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Golf Clubs (AREA)
PCT/US2002/012194 2001-04-25 2002-04-15 Aerodynamic pattern for a golf ball Ceased WO2002085469A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/843,338 2001-04-25
US09/843,338 US6537159B2 (en) 1999-09-16 2001-04-25 Aerodynamic pattern for a golf ball

Publications (1)

Publication Number Publication Date
WO2002085469A1 true WO2002085469A1 (en) 2002-10-31

Family

ID=25289688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/012194 Ceased WO2002085469A1 (en) 2001-04-25 2002-04-15 Aerodynamic pattern for a golf ball

Country Status (3)

Country Link
US (3) US6537159B2 (https=)
JP (1) JP2002331045A (https=)
WO (1) WO2002085469A1 (https=)

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US6537159B2 (en) * 1999-09-16 2003-03-25 Callaway Golf Company Aerodynamic pattern for a golf ball
US6602153B2 (en) * 1999-09-16 2003-08-05 Callaway Golf Company Aerodynamic pattern for a two-piece golf ball
US6855077B2 (en) * 2001-12-04 2005-02-15 Callaway Golf Company Process and apparatus for producing a golf ball with deep dimples
JP4489456B2 (ja) * 2004-02-23 2010-06-23 Ｓｒｉスポーツ株式会社 ゴルフボール
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US20100075781A1 (en) * 2007-02-28 2010-03-25 Callaway Golf Company Dimples composed of letters or symbols inset into cover
WO2010118396A2 (en) * 2009-04-09 2010-10-14 Aero-X Golf Inc. A low lift golf ball
US20130225333A1 (en) * 2010-04-09 2013-08-29 Bridgestone Sports Co., Ltd. Multi-piece solid golf ball
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US8061986B2 (en) * 2010-06-11 2011-11-22 General Electric Company Wind turbine blades with controllable aerodynamic vortex elements
US10232223B2 (en) 2010-12-22 2019-03-19 Acushnet Company Golf ball dimples defined by superposed curves
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US20150119171A1 (en) 2010-12-22 2015-04-30 Acushnet Company Golf ball dimples defined by superposed curves
US10758785B2 (en) 2010-12-22 2020-09-01 Acushnet Company Golf ball dimples defined by superposed curves
US9211442B2 (en) 2011-03-16 2015-12-15 Aero-X Golf, Inc. Anti-slice golf ball construction
JP5821263B2 (ja) * 2011-04-27 2015-11-24 ブリヂストンスポーツ株式会社 ゴルフボール
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US6224499B1 (en) * 1999-09-16 2001-05-01 Callaway Golf Company Golf ball with multiple sets of dimples
US6331150B1 (en) * 1999-09-16 2001-12-18 Callaway Golf Company Golf ball dimples with curvature continuity
US6537159B2 (en) * 1999-09-16 2003-03-25 Callaway Golf Company Aerodynamic pattern for a golf ball
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US5846141A (en) * 1997-04-23 1998-12-08 Acushnet Company Golf ball
US6299552B1 (en) * 1999-04-20 2001-10-09 Acushnet Company Low drag and weight golf ball
US6213898B1 (en) * 1999-09-16 2001-04-10 Callaway Golf Company Golf ball with an aerodynamic surface on a polyurethane cover

Also Published As

Publication number Publication date
US20040254033A1 (en) 2004-12-16
US6537159B2 (en) 2003-03-25
US6652341B2 (en) 2003-11-25
JP2002331045A (ja) 2002-11-19
US6939253B2 (en) 2005-09-06
US20010034273A1 (en) 2001-10-25
US20030134697A1 (en) 2003-07-17

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