EP1234601A2 - Balle de golf avec densité uniforme - Google Patents

Balle de golf avec densité uniforme Download PDF

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Publication number
EP1234601A2
EP1234601A2 EP02003461A EP02003461A EP1234601A2 EP 1234601 A2 EP1234601 A2 EP 1234601A2 EP 02003461 A EP02003461 A EP 02003461A EP 02003461 A EP02003461 A EP 02003461A EP 1234601 A2 EP1234601 A2 EP 1234601A2
Authority
EP
European Patent Office
Prior art keywords
core
density
golf ball
ball
layer
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.)
Withdrawn
Application number
EP02003461A
Other languages
German (de)
English (en)
Other versions
EP1234601A3 (fr
Inventor
Chester A. Shira
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.)
Carbite Inc
Original Assignee
Carbite Inc
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 Carbite Inc filed Critical Carbite Inc
Publication of EP1234601A2 publication Critical patent/EP1234601A2/fr
Publication of EP1234601A3 publication Critical patent/EP1234601A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B43/00—Balls with special arrangements
    • A63B43/04—Balls with special arrangements with an eccentric centre of gravity; with mechanism for changing the centre of gravity
    • 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
    • A63B37/0023—Covers
    • A63B37/0024—Materials other than ionomers or polyurethane
    • 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
    • A63B37/0024—Materials other than ionomers or polyurethane
    • A63B37/0026—Balata
    • 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
    • A63B37/0035—Density; Specific gravity
    • 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
    • A63B37/0038—Intermediate layers, e.g. inner cover, outer core, mantle
    • A63B37/004—Physical properties
    • A63B37/0047—Density; Specific gravity
    • 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
    • A63B37/0066—Density; Specific gravity
    • 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
    • A63B37/02—Special cores
    • 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

Definitions

  • golf balls are manufactured using various materials for cores. inner cores, outer covers and covers. These materials are each of a different density and thus, if they are not perfectly centered about one another, there can be a heavy side and a light side to the ball. If a straight line is drawn between the light and heavy points in a golf ball, and this line is parallel to the desired direction of travel. then when striking the ball towards the target, the ball's travel will be true and straight to the target. If this imaginary line is perpendicular to the target and the ball is struck towards that target, then the ball's travel will veer slightly in the direction of the heavy side of the ball.
  • the golf ball core thus formed is centerless ground to achieve near perfect roundness.
  • Centerless grinding is a well known process wherein spheres are suspended against a work blade between two grooved grinding wheels (and/or a regulating wheel) whose axis are slightly cocked and spinning in opposite directions. These actions continually rotate and remove material from the sphere to achieve near perfect spherical shape.
  • This invention involves (1) making one or more covering layers of the golf ball of the same density as the "standard" core material (1.18gm/cc) - resulting in a ball that is heavier than the standard, but weight balanced; (2) making the cover heavier and the core lighter (for example, both 1.13gm/cc) - resulting in a ball of the desired weight and properly weight balanced; and (3) making the core lighter, matching the density of a typical cover material (0.99 gm/cc) resulting in a ball that is lighter than the standard, but properly weight balanced.
  • Satisfactory cover materials are urethane, balata and an ionomer resin or any combination of these materials which have been modified with density altering constituents such that the density of the core, the one or more layers and the complete ball will be essentially the same.
  • Figure 1 is a perspective view of a conventional golf ball.
  • Figure 2 is a cross section of a conventional golf ball in which the core 10 and the outer layer 11 are perfectly centered.
  • Figure 3 is a cross section of a typical golf ball in which the core 10 has an outer layer 11 which is thicker on the right side of the core than the left side.
  • Figure 4 is a multi-layer golf ball wherein the layers 11 and 12 are thicker on the right side than on the left side.
  • Applicants invention preferably involves making the density of the core material and the density of the cover materials the same, and having these made from different materials.
  • the initial layer and each succeeding layer can be constructed of suitable materials that have been formulated with constituents that bring the density of the layer to exactly match the 1.13 gm/cc of the core.
  • the core may be made from the polybutadiene and a zinc monomer as is the current practice.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP02003461A 2001-02-20 2002-02-14 Balle de golf avec densité uniforme Withdrawn EP1234601A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67084301A 2001-02-20 2001-02-20
US670843 2001-02-20

Publications (2)

Publication Number Publication Date
EP1234601A2 true EP1234601A2 (fr) 2002-08-28
EP1234601A3 EP1234601A3 (fr) 2003-06-25

Family

ID=24692116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02003461A Withdrawn EP1234601A3 (fr) 2001-02-20 2002-02-14 Balle de golf avec densité uniforme

Country Status (4)

Country Link
EP (1) EP1234601A3 (fr)
JP (1) JP2002253704A (fr)
CN (1) CN1370610A (fr)
TW (1) TW462894B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI501896B (zh) * 2013-07-31 2015-10-01 Ichikawa Tomonari The outer cylinder forms a grip with a different thickness

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274637A (en) * 1979-01-31 1981-06-23 Questor Corporation Golf ball having cellular cover
US5002281A (en) * 1989-03-01 1991-03-26 Sumitomo Rubber Industries, Ltd. Three-piece solid golf ball
US5150906A (en) * 1989-03-10 1992-09-29 Lisco, Inc. Multi-piece golf balls and methods of manufacture
US5273286A (en) * 1992-11-06 1993-12-28 Sun Donald J C Multiple concentric section golf ball
US6054550A (en) * 1997-04-18 2000-04-25 Bridgestone Sports Co., Ltd. Wound golf ball
EP1084736A1 (fr) * 1999-08-30 2001-03-21 Carbite, Inc. Balles de golf avec densite uniforme

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274637A (en) * 1979-01-31 1981-06-23 Questor Corporation Golf ball having cellular cover
US5002281A (en) * 1989-03-01 1991-03-26 Sumitomo Rubber Industries, Ltd. Three-piece solid golf ball
US5150906A (en) * 1989-03-10 1992-09-29 Lisco, Inc. Multi-piece golf balls and methods of manufacture
US5273286A (en) * 1992-11-06 1993-12-28 Sun Donald J C Multiple concentric section golf ball
US6054550A (en) * 1997-04-18 2000-04-25 Bridgestone Sports Co., Ltd. Wound golf ball
EP1084736A1 (fr) * 1999-08-30 2001-03-21 Carbite, Inc. Balles de golf avec densite uniforme

Also Published As

Publication number Publication date
EP1234601A3 (fr) 2003-06-25
TW462894B (en) 2001-11-11
CN1370610A (zh) 2002-09-25
JP2002253704A (ja) 2002-09-10

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