EP0897732A3 - Multi-piece solid golf ball - Google Patents

Multi-piece solid golf ball Download PDF

Info

Publication number
EP0897732A3
EP0897732A3 EP98306409A EP98306409A EP0897732A3 EP 0897732 A3 EP0897732 A3 EP 0897732A3 EP 98306409 A EP98306409 A EP 98306409A EP 98306409 A EP98306409 A EP 98306409A EP 0897732 A3 EP0897732 A3 EP 0897732A3
Authority
EP
European Patent Office
Prior art keywords
shore
outer cover
product
hardnesses
dimple
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.)
Granted
Application number
EP98306409A
Other languages
German (de)
French (fr)
Other versions
EP0897732A2 (en
EP0897732B1 (en
Inventor
Hisashi Bridgestone Sports Co. Ltd. Yamagishi
Hiroshi Bridgestone Sports Co. Ltd. Higuchi
Junji Bridgestone Sports Co. Ltd. Hayashi
Akira Bridgestone Sports Co. Ltd. Kawata
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.)
Bridgestone Sports Co Ltd
Original Assignee
Bridgestone Sports Co Ltd
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 Bridgestone Sports Co Ltd filed Critical Bridgestone Sports Co Ltd
Publication of EP0897732A2 publication Critical patent/EP0897732A2/en
Publication of EP0897732A3 publication Critical patent/EP0897732A3/en
Application granted granted Critical
Publication of EP0897732B1 publication Critical patent/EP0897732B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A63B37/00215—Volume ratio
    • 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
    • A63B37/0016—Specified individual dimple volume
    • 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
    • A63B37/0019—Specified dimple depth
    • 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
    • A63B37/0023—Covers
    • A63B37/0029—Physical properties
    • A63B37/0031—Hardness
    • 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
    • A63B37/0072—Characteristics of the ball as a whole with a specified number of layers
    • A63B37/0075—Three piece balls, i.e. cover, intermediate layer and core
    • 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
    • A63B37/12—Special coverings, i.e. outer layer material

Abstract

A multi-piece solid golf ball is provided which is improved in spin, feeling, and durability, prevents its trajectory from rising or dropping, and offers an increased flight distance.
A multi-piece solid golf ball comprising a solid core and a cover having an inner and an outer layer surrounding the core wherein the outer cover layer has a surface formed with a plurality of dimples is characterized in that a product of the Shore D hardness of the inner cover layer multiplied by the Shore D hardness of the outer cover layer and a proportion VR (%) of the total of the volumes of dimple spaces each defined below a plane circumscribed by the dimple edge to the overall volume of a phantom sphere given on the assumption that the golf ball surface is free of dimples satisfy any one of the following combinations (1) to (5):
  • (1) the product of Shore D hardnesses of inner and outer cover layers: 1,500 to less than 2,000
       VR: 0.8 to 1.1%
  • (2) the product of Shore D hardnesses of inner and outer cover layers: 2,000 to less than 2,500
       VR: 0.75 to 1.05%
  • (3) the product of Shore D hardnesses of inner and outer cover layers: 2,500 to less than 3,000
       VR: 0.7 to 1%
  • (4) the product of Shore D hardnesses of inner and outer cover layers: 3,000 to less than 3,500
       VR: 0.65 to 0.95%
  • (5) the product of Shore D hardnesses of inner and outer cover layers: 3,500 to 4,000
       VR: 0.6 to 0.9%,
    • and the dimples include at least three types of dimples which are different in at least one of a diameter, a depth, and a value V0 which is the volume of one dimple space defined below a plane circumscribed by the dimple edge divided by the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple from the bottom.
    Figure 00000001
    EP98306409A 1997-08-11 1998-08-11 Multi-piece solid golf ball Expired - Lifetime EP0897732B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    JP9228902A JPH1157067A (en) 1997-08-11 1997-08-11 Multi-piece solid golf ball
    JP22890297 1997-08-11
    JP228902/97 1997-08-11

    Publications (3)

    Publication Number Publication Date
    EP0897732A2 EP0897732A2 (en) 1999-02-24
    EP0897732A3 true EP0897732A3 (en) 2001-06-06
    EP0897732B1 EP0897732B1 (en) 2008-12-31

    Family

    ID=16883658

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98306409A Expired - Lifetime EP0897732B1 (en) 1997-08-11 1998-08-11 Multi-piece solid golf ball

    Country Status (3)

    Country Link
    EP (1) EP0897732B1 (en)
    JP (1) JPH1157067A (en)
    DE (1) DE69840396D1 (en)

    Families Citing this family (16)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2000074794A1 (en) * 1999-06-08 2000-12-14 Dunlop Maxfli Sports Corporation Three piece distance golf ball with dimples
    US6723008B2 (en) 2000-09-11 2004-04-20 Bridgestone Sports Co., Ltd. Multi-piece solid golf ball
    US6746345B2 (en) 2000-09-11 2004-06-08 Bridgestone Sports Co., Ltd. Multi-piece solid golf ball
    US6739986B2 (en) 2000-09-11 2004-05-25 Bridgestone Sports Co., Ltd. Multi-piece solid golf ball
    JP4092532B2 (en) 2001-01-12 2008-05-28 ブリヂストンスポーツ株式会社 Golf ball
    JP4816847B2 (en) * 2001-05-23 2011-11-16 ブリヂストンスポーツ株式会社 Multi-piece solid golf ball
    JP2003000760A (en) * 2001-06-19 2003-01-07 Bridgestone Sports Co Ltd Golf ball
    JP2003000761A (en) * 2001-06-19 2003-01-07 Bridgestone Sports Co Ltd Golf ball
    JP2003000759A (en) * 2001-06-19 2003-01-07 Bridgestone Sports Co Ltd Golf ball
    JP4092097B2 (en) 2001-10-31 2008-05-28 Ｓｒｉスポーツ株式会社 Multi-piece solid golf ball
    JP3984459B2 (en) 2001-11-20 2007-10-03 Ｓｒｉスポーツ株式会社 Rubber composition for golf ball
    JP2003180872A (en) 2001-12-17 2003-07-02 Bridgestone Sports Co Ltd Multipiece golf ball
    US6843735B2 (en) 2002-02-27 2005-01-18 Sumitomo Rubber Industries, Ltd. Golf ball
    JP2003284792A (en) 2002-03-28 2003-10-07 Sumitomo Rubber Ind Ltd Golf ball
    JP2004073291A (en) 2002-08-12 2004-03-11 Sumitomo Rubber Ind Ltd Golf ball
    US7384351B2 (en) * 2005-11-22 2008-06-10 Bridgestone Sports Co., Ltd. Golf ball

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2298583A (en) * 1995-03-06 1996-09-11 Bridgestone Sports Co Ltd Golf ball
    GB2301291A (en) * 1995-05-29 1996-12-04 Bridgestone Sports Co Ltd Thread-wound golf balls
    GB2306118A (en) * 1995-10-11 1997-04-30 Sumitomo Rubber Ind Solid golf ball

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2298583A (en) * 1995-03-06 1996-09-11 Bridgestone Sports Co Ltd Golf ball
    GB2301291A (en) * 1995-05-29 1996-12-04 Bridgestone Sports Co Ltd Thread-wound golf balls
    GB2306118A (en) * 1995-10-11 1997-04-30 Sumitomo Rubber Ind Solid golf ball

    Also Published As

    Publication number Publication date
    JPH1157067A (en) 1999-03-02
    EP0897732A2 (en) 1999-02-24
    EP0897732B1 (en) 2008-12-31
    DE69840396D1 (en) 2009-02-12

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