GB2038643B - Cores for tennis-balls - Google Patents

Cores for tennis-balls

Info

Publication number
GB2038643B
GB2038643B GB7938958A GB7938958A GB2038643B GB 2038643 B GB2038643 B GB 2038643B GB 7938958 A GB7938958 A GB 7938958A GB 7938958 A GB7938958 A GB 7938958A GB 2038643 B GB2038643 B GB 2038643B
Authority
GB
United Kingdom
Prior art keywords
tennis
cores
balls
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.)
Expired
Application number
GB7938958A
Other versions
GB2038643A (en
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.)
Dunlop Ltd
Original Assignee
Dunlop 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 Dunlop Ltd filed Critical Dunlop Ltd
Priority to GB7938958A priority Critical patent/GB2038643B/en
Priority to IT8019179A priority patent/IT1220962B/en
Publication of GB2038643A publication Critical patent/GB2038643A/en
Application granted granted Critical
Publication of GB2038643B publication Critical patent/GB2038643B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/04—Spherical articles, e.g. balls
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B39/00—Hollow non-inflatable balls, i.e. having no valves
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B39/00—Hollow non-inflatable balls, i.e. having no valves
    • A63B2039/003—Hollow non-inflatable balls, i.e. having no valves substantially hollow and pressureless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
GB7938958A 1979-01-12 1979-11-09 Cores for tennis-balls Expired GB2038643B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7938958A GB2038643B (en) 1979-01-12 1979-11-09 Cores for tennis-balls
IT8019179A IT1220962B (en) 1979-01-12 1980-01-11 SOULS FOR TENNIS BALLS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7901306 1979-01-12
GB7938958A GB2038643B (en) 1979-01-12 1979-11-09 Cores for tennis-balls

Publications (2)

Publication Number Publication Date
GB2038643A GB2038643A (en) 1980-07-30
GB2038643B true GB2038643B (en) 1983-03-23

Family

ID=26270218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7938958A Expired GB2038643B (en) 1979-01-12 1979-11-09 Cores for tennis-balls

Country Status (2)

Country Link
GB (1) GB2038643B (en)
IT (1) IT1220962B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60106470A (en) * 1983-11-14 1985-06-11 住友ゴム工業株式会社 Non-pressure tennis ball
US4765853A (en) * 1987-10-07 1988-08-23 Hoffman Allan C Method of making a pressurized ball
JP2558559B2 (en) * 1991-05-10 1996-11-27 住友ゴム工業株式会社 Pressureless tennis ball
US6030304A (en) * 1996-03-12 2000-02-29 Wilson Sporting Goods Co. Pressureless tennis ball
US10918913B2 (en) * 2018-08-28 2021-02-16 Wilson Sporting Goods Co. Tennis ball
US11951360B2 (en) 2018-08-28 2024-04-09 Wilson Sporting Goods Co. Tennis ball
US11192001B2 (en) * 2020-02-11 2021-12-07 Wilson Sporting Goods Co. Tennis ball having a thermoplastic core
US11426637B2 (en) 2020-02-11 2022-08-30 Wilson Sporting Goods Co. Tennis ball having a thermoplastic core
US11247103B2 (en) 2020-02-11 2022-02-15 Wilson Sporting Goods Co. Tennis ball having a thermoplastic core

Also Published As

Publication number Publication date
IT1220962B (en) 1990-06-21
GB2038643A (en) 1980-07-30
IT8019179A0 (en) 1980-01-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee