WO2004062734B1 - Ball bat with a strain energy optimized barrel - Google Patents

Ball bat with a strain energy optimized barrel

Info

Publication number
WO2004062734B1
WO2004062734B1 PCT/US2003/041008 US0341008W WO2004062734B1 WO 2004062734 B1 WO2004062734 B1 WO 2004062734B1 US 0341008 W US0341008 W US 0341008W WO 2004062734 B1 WO2004062734 B1 WO 2004062734B1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
barrel
ball bat
substantially cylindrical
neutral axis
Prior art date
Application number
PCT/US2003/041008
Other languages
French (fr)
Other versions
WO2004062734A3 (en
WO2004062734A2 (en
Inventor
William B Giannetti
Dewey Chauvin
Hsing-Yen Chuang
Original Assignee
Easton James D Inc
William B Giannetti
Dewey Chauvin
Hsing-Yen Chuang
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
Priority claimed from US10/336,130 external-priority patent/US6764419B1/en
Application filed by Easton James D Inc, William B Giannetti, Dewey Chauvin, Hsing-Yen Chuang filed Critical Easton James D Inc
Priority to AU2003300281A priority Critical patent/AU2003300281B2/en
Priority to JP2004566590A priority patent/JP4252538B2/en
Priority to CA2509448A priority patent/CA2509448C/en
Publication of WO2004062734A2 publication Critical patent/WO2004062734A2/en
Publication of WO2004062734A3 publication Critical patent/WO2004062734A3/en
Publication of WO2004062734B1 publication Critical patent/WO2004062734B1/en
Priority to HK06105822A priority patent/HK1085682A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
    • A63B59/50—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/18—Baseball, rounders or similar games
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Laminated Bodies (AREA)
  • Crushing And Grinding (AREA)

Abstract

A ball bat includes a barrel having a substantially cylindrical outer wall including a first material located radially outwardly from a neutral axis of the outer wall, and a second material located radially inwardly from the neutral axis of the outer wall. The barrel further includes a substantially cylindrical inner wall located within the outer wall and including a third material located radially outwardly from a neutral axis of the inner wall, and a fourth material located radially inwardly from the neutral axis of the inner wall. The first and third materials each have a specific energy storage in compression of at least 2000 psi, and the second and fourth materials each have a tensile modulus of at least 18 million psi. The ball bat exhibits excellent performance and durability characteristics.

Claims

25 AMENDED CLAIMS [received by the International Bureau on 2 March 2005 (02.03.05); original claims 16-22 has been cancelled, new claims 29 and 30 has been added, claims 1-15 and 23-28 are unchanged (4 pages)]
12. The ball bat of claim 10 wherein the outer wall, the inner wall, and the layer of bond inhibiting material all terminate together at at least one end of the barrel.
13. The ball bat of claim 1 wherein the interface shear control zone comprises at least one of a friction joint, a sliding joint, and an elastomeric joint.
14. The ball bat of claim 1 wherein a fundamental hoop frequency of the outer wall is within 20% of a fundamental hoop frequency of the inner wall.
15. The ball bat of claim 14 wherein the fundamental hoop frequencies of the outer and inner walls are each in a range of 1000 to 1200 Hz.
23. A ball bat including a barrel, a handle, and a tapered section joining the barrel to the handle, with the barrel comprising: a substantially cylindrical first wall including a first material located radially outwardly from a neutral axis of the first wall, and a second material located radially inwardly from the neutral axis of the first wall; wherein the first material has a specific energy storage in compression of at least 2000 psi, and the second material has a tensile modulus of at least 18 million psi.
24. The ball bat of claim 23 further comprising a substantially cylindrical second wall located within the first wall.
25. The ball bat of claim 24 wherein the second wall is separated from the first wall by a first interface shear control zone.
26. The ball bat of claim 25 further comprising a substantially cylindrical third wall located within the second wall.
27. The ball bat of claim 26 wherein the third wall is separated from the second wall by a second interface shear control zone.
28. A ball bat including a barrel, a handle, and a tapered section joining the
barrel to the handle, with the barrel comprising: a substantially cylindrical outer wall; a substantially cylindrical inner wall located within the outer wall; an interface shear control zone separating the outer wall from the inner
wall, such that the outer wall is divided into a first outer section and a first inner
section by a first neutral axis, and the inner wall is divided into a second outer
section and a second inner section by a second neutral axis; 27
wherein the first and second outer sections each include a structural glass epoxy, and the first and second inner sections each include a graphite epoxy
29. A ball bat including a barrel, a handle, and a tapered section joining the barrel to the handle, with the barrel comprising: a substantially cylindrical outer wall; and a substantially cylindrical inner wall located within the outer wall, wherein the outer wall and the inner wall blend together at at least one end of the barrel; an interface shear control zone separating' the outer wall from the inner wall, such that the outer wall is divided into a first outer section and a first inner section by a first neutral axis, and the inner wall is divided into a second outer section arid a second inner section by a second neutral axis; wherein the first and second, outer sections each include a material having a specific energy storage in compression of at least 2000 psi, and the first and second inner sections each include a material having a stiffness of at least 18 million psi.
30. A ball bat including a barrel, a handle, and a tapered section joining the barrel to the handle, with the barrel comprising: a substantially cylindrical first wall including a first mateπal located radially outwardly from a neutral axis of the first wall, and a second material located radially inwardly from the neutral axis of the first wall, wherein the first material has a specific
[40095 8003 WO00/LA050600 00 ] 28
energy storage in compression of at least 2000 psi, and the second material has a
tensile modulus of at least 18 milli n osi; a substantially cylindrical second wall located within the first wall; a first interface shear control zone separating the first wall from the second wall; a substantially cylindrical thuu wall located within the second wall; and a second interface shear control zone separating the second wall from the third wall.
PCT/US2003/041008 2003-01-03 2003-12-19 Ball bat with a strain energy optimized barrel WO2004062734A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2003300281A AU2003300281B2 (en) 2003-01-03 2003-12-19 Ball bat with a strain energy optimized barrel
JP2004566590A JP4252538B2 (en) 2003-01-03 2003-12-19 Ball bat with barrel section optimized for strain energy
CA2509448A CA2509448C (en) 2003-01-03 2003-12-19 Ball bat with a strain energy optimized barrel
HK06105822A HK1085682A1 (en) 2003-01-03 2006-05-19 Ball bat with a strain energy optimized barrel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/336,130 US6764419B1 (en) 2003-01-03 2003-01-03 Composite baseball bat having an interface section in the bat barrel
US10/336,130 2003-01-03
US10/712,251 2003-11-13
US10/712,251 US6866598B2 (en) 2003-01-03 2003-11-13 Ball bat with a strain energy optimized barrel

Publications (3)

Publication Number Publication Date
WO2004062734A2 WO2004062734A2 (en) 2004-07-29
WO2004062734A3 WO2004062734A3 (en) 2005-03-10
WO2004062734B1 true WO2004062734B1 (en) 2005-04-28

Family

ID=32716879

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/041008 WO2004062734A2 (en) 2003-01-03 2003-12-19 Ball bat with a strain energy optimized barrel

Country Status (5)

Country Link
US (1) US20050202909A1 (en)
JP (1) JP4252538B2 (en)
AU (1) AU2003300281B2 (en)
CA (1) CA2509448C (en)
WO (1) WO2004062734A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008132309A (en) * 2006-10-31 2008-06-12 Mizuno Corp Bat for baseball or soft ball
US9504891B1 (en) * 2015-07-20 2016-11-29 Well Jet International Co., Ltd. Baseball bat
US10159878B2 (en) 2015-08-27 2018-12-25 Easton Diamond Sports, Llc Composite ball bat including a barrel with structural regions separated by a porous non-adhesion layer
US11167190B2 (en) 2017-07-19 2021-11-09 Easton Diamond Sports, Llc Ball bats with reduced durability regions for deterring alteration
US11013967B2 (en) 2017-07-19 2021-05-25 Easton Diamond Sports, Llc Ball bats with reduced durability regions for deterring alteration
US10940377B2 (en) 2018-06-19 2021-03-09 Easton Diamond Sports, Llc Composite ball bats with transverse fibers
US11890517B2 (en) * 2020-08-10 2024-02-06 Wilson Sporting Goods Co. Ball bat with one-piece multi-wall barrel portion

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1611858A (en) * 1923-12-31 1926-12-21 Union Hardware Company Baseball bat
US4931247A (en) * 1988-12-19 1990-06-05 Yeh Chien Hwa Fabrication method of a hollow racket made of carbon fiber
US5364095A (en) * 1989-03-08 1994-11-15 Easton Aluminum, Inc. Tubular metal ball bat internally reinforced with fiber composite
US5624115A (en) * 1990-05-04 1997-04-29 The Baum Research & Development Co., Inc. Composite baseball bat with cavitied core
JPH057640A (en) * 1990-11-15 1993-01-19 Mizuno Corp Bat and its production
CA2123531C (en) * 1993-05-14 1999-12-28 Michael D. Eggiman Improved softball bat
US5395108A (en) * 1994-01-19 1995-03-07 Easton Aluminum, Inc. Simulated wood composite ball bat
US5511777A (en) * 1994-02-03 1996-04-30 Grover Products Co. Ball bat with rebound core
US6352485B1 (en) * 1994-08-12 2002-03-05 Advanced Composites, Inc. Fiber reinforced molded products and processes
US6344007B1 (en) * 1996-02-02 2002-02-05 Spalding Sports Worldwide, Inc. Bat with high moment of inertia to weight ratio and method of fabrication
US5676610A (en) * 1996-12-23 1997-10-14 Hillerich & Bradsby Co. Bat having a rolled sheet inserted into the barrel
US5899823A (en) * 1997-08-27 1999-05-04 Demarini Sports, Inc. Ball bat with insert
US6053828A (en) * 1997-10-28 2000-04-25 Worth, Inc. Softball bat with exterior shell
US6042493A (en) * 1998-05-14 2000-03-28 Jas. D. Easton, Inc. Tubular metal bat internally reinforced with fiber and metallic composite
US6251034B1 (en) * 1998-07-01 2001-06-26 Wilson Sporting Goods Co. Ball bat
CA2306036C (en) * 1998-10-19 2003-10-14 Mizuno Corporation Baseball or softball bat
TW570831B (en) * 2000-05-31 2004-01-11 Easton James D Inc Rigid shell layered softball bat
US6764419B1 (en) * 2003-01-03 2004-07-20 Jas D. Easton, Inc. Composite baseball bat having an interface section in the bat barrel
US6997826B2 (en) * 2003-03-07 2006-02-14 Ce Composites Baseball Inc. Composite baseball bat

Also Published As

Publication number Publication date
JP4252538B2 (en) 2009-04-08
AU2003300281B2 (en) 2007-10-18
US20050202909A1 (en) 2005-09-15
CA2509448A1 (en) 2004-07-29
CA2509448C (en) 2010-09-14
WO2004062734A3 (en) 2005-03-10
JP2006512170A (en) 2006-04-13
WO2004062734A2 (en) 2004-07-29
AU2003300281A1 (en) 2004-08-10

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