EP0101426B1 - Golf club head - Google Patents
Golf club head Download PDFInfo
- Publication number
- EP0101426B1 EP0101426B1 EP83850212A EP83850212A EP0101426B1 EP 0101426 B1 EP0101426 B1 EP 0101426B1 EP 83850212 A EP83850212 A EP 83850212A EP 83850212 A EP83850212 A EP 83850212A EP 0101426 B1 EP0101426 B1 EP 0101426B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core body
- wall
- club head
- chamber
- plastics material
- 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
Links
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0433—Heads with special sole configurations
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/045—Strengthening ribs
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0466—Heads wood-type
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
Definitions
- the present invention relates to a golf club head and more particularly relates to an improvement of the golf club head revealed in Swedish Patent Application 8101069-6.
- Said head comprises a core body of a first plastics material and a housing tightly surrounding the core body, said housing having a lateral opening which defines a free striking surface on the core body, said core body having an exterior shape and dimensions essentially corresponding to the exterior shape and dimensions of the finished club head and said housing having the shape of a relatively thin-walled shell of at least one other plastics material which has a higher modulus of elasticity than the first plastics material and which surrounds the core body while exerting an initial stress thereon, said core body having a cavity, the walls of which are at least partially covered by a shell portion made in one piece with the shell, said shell portion defining an interior chamber the bottom of which is covered by a sole plate.
- a bracing wall be arranged which extends transversely to the striking surface from the rear wall, as viewed in the direction of swing, of the chamber towards the forward wall of the chamber and in that a heel-like projection is arranged on the forward wall of the chamber directly in front of the end surface of the bracing wall, whereby the facing end surfaces of the bracing wall and the heel define an pwardly narrowing slot.
- the wedge-shaped slot between the end surface of the bracing wall and the heel will result in an asymmetrical deformation of the impact wall, so that it will yield more towards the bottom of the club head, whereby the ball will be imparted a back-spin when leaving the club head, which is desirable for the golfer to obtain an ideal ball path.
- Fig 1 is a view from below of the golf club head according to the invention and Fig 2 is a cross-section along the line II-II in Fig 1..
- the embodiment of the golf club head shown comprises a core body 1 which is made of a suitable plastics material of high modulus of elasticity, e.g. a polyamide plastic, such as "ZY-TEL" @ .
- the core body 1 has essentially the same exterior shape as the intended finished club head, but is proportionally somewhat smaller.
- the core body 1 is surrounded by a housing or shell 2 of a suitable plastics material which has a higher modulus of elasticity than the material in the core body 1, e.g. a carbon fiber reinforced polyamide plastic, such as nylon, which is, for example, extruded about the core body 1, so that the shell 2 surrounds and is in tight contact with the outside of the core body 1 except along an essentially flat surface 3 which forms the striking surface of the club head.
- the core body 1 has an essentially centrally located cavity 4, which opens towards the bottom of the club head.
- This cavity 4 is at least partially covered by a shell portion 5 integral with the shell 2 and defining an inner chamber 6.
- the cavity 4 and the shell portion 5 create a rectangular box-shape, as shown in Fig 1, with the shell portion 5 side 7 adjacent to the striking surface 3 being possibly completely or partially removed to reveal the core body 1.
- a sole plate 8 is mounted on the bottom of the club head covering the chamber 6.
- a bracing wall 9 serving as an anvil extends from the rear wall 10, as viewed in the direction of swing, of the chamber 6 towards the forward wall 7 7 of the chamber.
- a heel 11 projects backwards from said forward wall 7 and is directly opposite the end surface 12 of the bracing wall 9 (see Fig 1).
- the facing end surfaces of the bracing wall 9 and the heel 11 define between them a slot 13 which narrows upwardly.
- the heel 11 is designed to limit the movement backwards of the impact wall 14 when the ball is struck by abutting against the striking surface 12 of the bracing wall.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Golf Clubs (AREA)
Description
- The present invention relates to a golf club head and more particularly relates to an improvement of the golf club head revealed in Swedish Patent Application 8101069-6. Said head comprises a core body of a first plastics material and a housing tightly surrounding the core body, said housing having a lateral opening which defines a free striking surface on the core body, said core body having an exterior shape and dimensions essentially corresponding to the exterior shape and dimensions of the finished club head and said housing having the shape of a relatively thin-walled shell of at least one other plastics material which has a higher modulus of elasticity than the first plastics material and which surrounds the core body while exerting an initial stress thereon, said core body having a cavity, the walls of which are at least partially covered by a shell portion made in one piece with the shell, said shell portion defining an interior chamber the bottom of which is covered by a sole plate.
- One problem in the known club head is that cracks or ruptures can occur in the wall of the core body which forms the striking surface of the head due to excessive deformation of the wall when the golf ball is struck extremely hard. In order to eliminate this problem, a further development according to the invention suggests that a bracing wall be arranged which extends transversely to the striking surface from the rear wall, as viewed in the direction of swing, of the chamber towards the forward wall of the chamber and in that a heel-like projection is arranged on the forward wall of the chamber directly in front of the end surface of the bracing wall, whereby the facing end surfaces of the bracing wall and the heel define an pwardly narrowing slot. Thus, when the striking wall is deformed by a powerful impact, the end surface of the heel will come into contact against the end surface of the bracing wall. The harder the impact is, the greater will be the effective area of contact between the heel and the bracing wall. This provides a controlled deformation of the impact wall at the same time as the shock wave generated when the wall is struck by the club head will return to the striking surface via the bracing wall and the heel imparting an extra acceleration force to the ball. Furthermore, the wedge-shaped slot between the end surface of the bracing wall and the heel will result in an asymmetrical deformation of the impact wall, so that it will yield more towards the bottom of the club head, whereby the ball will be imparted a back-spin when leaving the club head, which is desirable for the golfer to obtain an ideal ball path.
- The invention will be described in more detail below with reference to the accompanying drawing. Fig 1 is a view from below of the golf club head according to the invention and Fig 2 is a cross-section along the line II-II in Fig 1..
- The embodiment of the golf club head shown comprises a core body 1 which is made of a suitable plastics material of high modulus of elasticity, e.g. a polyamide plastic, such as "ZY-TEL"@. The core body 1 has essentially the same exterior shape as the intended finished club head, but is proportionally somewhat smaller. The core body 1 is surrounded by a housing or
shell 2 of a suitable plastics material which has a higher modulus of elasticity than the material in the core body 1, e.g. a carbon fiber reinforced polyamide plastic, such as nylon, which is, for example, extruded about the core body 1, so that theshell 2 surrounds and is in tight contact with the outside of the core body 1 except along an essentially flat surface 3 which forms the striking surface of the club head. - Furthermore, the core body 1 has an essentially centrally located cavity 4, which opens towards the bottom of the club head. This cavity 4 is at least partially covered by a
shell portion 5 integral with theshell 2 and defining aninner chamber 6. The cavity 4 and theshell portion 5 create a rectangular box-shape, as shown in Fig 1, with theshell portion 5side 7 adjacent to the striking surface 3 being possibly completely or partially removed to reveal the core body 1. Asole plate 8 is mounted on the bottom of the club head covering thechamber 6. - In accordance with the present invention, a
bracing wall 9 serving as an anvil extends from therear wall 10, as viewed in the direction of swing, of thechamber 6 towards theforward wall 7 7 of the chamber. Aheel 11 projects backwards from saidforward wall 7 and is directly opposite theend surface 12 of the bracing wall 9 (see Fig 1). The facing end surfaces of thebracing wall 9 and theheel 11 define between them a slot 13 which narrows upwardly. Theheel 11 is designed to limit the movement backwards of theimpact wall 14 when the ball is struck by abutting against thestriking surface 12 of the bracing wall. By virtue of the upwardly narrowing shape of the slot 13, a non-symmetrical deformation of theimpact wall 14 is obtained, so that the wall is pressed in more towards the bottom of the club head, the result being that the ball will be imparted a force component acting from below giving the ball a back spin as it leaves the striking surface 3, thus improving its flight path.
Claims (1)
- Golf club head, comprising a core body (1) of a first plastics material and a housing (2) tightly surrounding the core body (1) and having a lateral opening which defines a free striking surface (3) on the core body (1), said core body (1) having an exterior shape and dimensions essentially corresponding to the exterior shape and dimensions of the finished club head and said housing (2) having the shape of a relatively thin-walled shell of at least one other plastics material, which has a higher modulus of elasticity than the first plastics material and which confines the core body (1) while exerting an initial stress thereon, said core body (1) having a cavity (4), the walls of which are at least partially covered by a shell portion (5) integral with the shell, said shell portion (5) defining an interior chamber (6), the bottom of which is covered by a sole plate (8), characterized in that a bracing wall (9) oriented transversely to the striking surface (3) of the core body extends from the rear wall (10), as viewed in the direction of swing, of the chamber (6) towards the forward wall (7) of the chamber and that a heel-like projection (11) is arranged on the forward wall (7) of the chamber directly in front of the end surface (12) of the bracing wall (9), whereby the facing end surfaces of the bracing wall (9) and the heel (11) define an upwardly narrowing slot (13).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8204717 | 1982-08-16 | ||
SE8204717A SE432199B (en) | 1982-08-16 | 1982-08-16 | HEAD OF A GOLF CLUB |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0101426A2 EP0101426A2 (en) | 1984-02-22 |
EP0101426A3 EP0101426A3 (en) | 1984-03-28 |
EP0101426B1 true EP0101426B1 (en) | 1986-09-17 |
Family
ID=20347543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83850212A Expired EP0101426B1 (en) | 1982-08-16 | 1983-08-15 | Golf club head |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0101426B1 (en) |
JP (1) | JPS5985679A (en) |
CA (1) | CA1208675A (en) |
DE (1) | DE3366301D1 (en) |
SE (1) | SE432199B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6031772A (en) * | 1983-07-29 | 1985-02-18 | 住友ゴム工業株式会社 | Golf club head |
US5185914A (en) * | 1992-01-08 | 1993-02-16 | Dom Petruccelli | Golf club and method of making same |
US5269517A (en) * | 1992-01-08 | 1993-12-14 | Dom Petruccelli | Golf club and method of making same |
FR2689406B1 (en) * | 1992-04-01 | 1994-06-03 | Taylor Made Golf Co | GOLF CLUB HEAD COMPOSED OF AN INTERNAL SUB-ASSEMBLY AND AN EXTERNAL ENVELOPE. |
US9192831B2 (en) | 2009-01-20 | 2015-11-24 | Nike, Inc. | Golf club and golf club head structures |
US9795845B2 (en) | 2009-01-20 | 2017-10-24 | Karsten Manufacturing Corporation | Golf club and golf club head structures |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191107279A (en) * | 1911-03-23 | 1911-06-29 | Alexander Edward Lane F Rivers | Improvements in Golf Clubs. |
US1705997A (en) * | 1928-09-04 | 1929-03-19 | Quynn John Williams | Golf club |
US3190651A (en) * | 1962-09-10 | 1965-06-22 | Albert E W Thomas | Golf club including detachable ball striking faces of various lofts |
CH393161A (en) * | 1963-10-22 | 1965-05-31 | Zbinden Gaston | Golf cane head |
US4162794A (en) * | 1977-12-12 | 1979-07-31 | Thompson Stanley C | Golf club head sole plate with studs interlocking to head laminations |
-
1982
- 1982-08-16 SE SE8204717A patent/SE432199B/en not_active IP Right Cessation
-
1983
- 1983-08-15 EP EP83850212A patent/EP0101426B1/en not_active Expired
- 1983-08-15 DE DE8383850212T patent/DE3366301D1/en not_active Expired
- 1983-08-15 CA CA000434613A patent/CA1208675A/en not_active Expired
- 1983-08-16 JP JP58149522A patent/JPS5985679A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CA1208675A (en) | 1986-07-29 |
JPS5985679A (en) | 1984-05-17 |
EP0101426A2 (en) | 1984-02-22 |
SE8204717L (en) | 1984-02-17 |
SE8204717D0 (en) | 1982-08-16 |
SE432199B (en) | 1984-03-26 |
DE3366301D1 (en) | 1986-10-23 |
EP0101426A3 (en) | 1984-03-28 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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AK | Designated contracting states |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19840828 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LUNDIN, BENGT Owner name: WAETTERBAECK, PAUL GUNNAR |
|
ITF | It: translation for a ep patent filed | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LUNDIN, BENGT Owner name: WAETTERBAECK, PAUL GUNNAR |
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GRAA | (expected) grant |
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Inventor name: WAETTERBAECK, PAUL GUNNAR |
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26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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BERE | Be: lapsed |
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GBPC | Gb: european patent ceased through non-payment of renewal fee |