Claims
- 1. An iron golf club having a head, said head comprising a striking face and a shaft connecting portion, said head being constructed of a head body and a column-shaped hosel member, said hosel member being formed with a flat end face, serving as a shaft connecting portion, said head body being formed by forging, provided with a short, column-shaped fitting portion for joining the hosel member thereto, said fitting portion having an end face which is formed so flat that it is joined to the flat end face of said hosel member so that a tolerance of a loft angle of the head is set within a range of ±0.25 degree.
- 2. An iron golf club having a head, said head comprising a striking face and a shaft connecting portion, said head being constructed of a head body and a column-shaped hosel member, said hosel member being formed with a flat end face, serving as a shaft connecting portion, said head body being formed by forging, provided with a short, column-shaped fitting portion for joining the hosel member thereto, said fitting portion having an end face which is formed so flat that it is joined to the flat end face of said hosel member so that a tolerance of a lie angle of the head is set within a range of ±0.25 degree.
- 3. An iron golf club according to clam 1, wherein said head body and hosel member are joined to each other by means of laser beam welding.
- 4. An iron golf club according to clam 2, wherein said head body and hosel member are joined to each other by means of laser beam welding.
- 5. An iron golf club according to claim 1, wherein said head body and hosel member are joined to each other by means of electron beam joining.
- 6. An iron golf club according to claim 2, wherein said head body and hosel member are joined to each other by means of electron beam joining.
- 7. An iron golf club according to claim 1, wherein said head body and hosel member are joined to each other by means of amorphous joining.
- 8. An iron golf club according to claim 2, wherein said head body and hosel member are joined to each other by means of amorphous joining.
- 9. An iron golf club according to claim 1, wherein said face is formed with score lines prior to being joined to said hosel member, while said head body is held with reference to respective reference positions of said score lines and face so that the end face of the fitting portion thereof may be machined to define a predetermined loft angle, said hosel member being joined to the end face of the fitting portion so that a central axis thereof may be perpendicular thereto.
- 10. An iron golf club according to claim 2, wherein said face is formed with score lines prior to being joined to said hosel member, while said head body is held with reference to respective reference positions of said score lines and face so that the end face of the fitting portion thereof may be machined to define a predetermined lie angle, said hosel member being joined to the end face of the fitting portion so that a central axis thereof may be perpendicular thereto.
- 11. A set of iron golf clubs consisting of a plurality of golf clubs, each comprising a head having a striking face, a shorter shaft connected thereto and a larger loft angle as a club number thereof increases, said head being constructed of a head body and a column-shaped hosel member, said hosel member being formed with a flat end face, said head body being formed by forging, provided with a short, column-shaped fitting portion for joining the hosel member thereto, said fitting portion having an end face which is formed so flat that it is joined to the flat end face of said hosel member so that a tolerance of a difference between two loft angles set for respective two golf clubs of adjacent club numbers is set in a range of ±0.5 degree.
- 12. A set of iron golf clubs consisting of a plurality of golf clubs, each comprising a head having a striking face, a shorter shaft connected thereto and a larger lie angle as a club number thereof increases, said head being constructed of a head body and a column-shaped hosel member, said hosel member being formed with a flat end face, said head body being formed by forging, provided with a short, column-shaped fitting portion for joining the hosel member thereto, said fitting portion having an end face which is formed so flat that it is joined to the flat end face of said hosel member so that a tolerance of a difference between two lie angles set for respective two golf clubs of adjacent club numbers is set in a range of ±0.5 degree.
- 13. A set of iron golf clubs according to claim 11, wherein said head body and hosel member are joined to each other by means of laser beam welding.
- 14. A set of iron golf clubs according to claim 12, wherein said head body and hosel member are joined to each other by means of laser beam welding.
- 15. A set of iron golf clubs according to claim 11, wherein said head body and hosel member are joined to each other by means of electron beam joining.
- 16. A set of iron golf clubs according to claim 12, wherein said head body and hosel member are joined to each other by means of electron beam joining.
- 17. A set of iron golf clubs according to claim 11, wherein said head body and hosel member are joined to each other by means of amorphous joining.
- 18. A set of iron golf clubs according to claim 12, wherein said head body and hosel member are joined to each other by means of amorphous joining.
- 19. A set of iron golf clubs according to claim 11, wherein said face is formed with score lines prior to being joined to said hosel member, while said head body is held with reference to respective reference positions of said score lines and face so that the end face of the fitting portion thereof may be machined to define a predetermined loft angle, said hosel member being joined to the end face of the fitting portion so that a central axis thereof may be perpendicular thereto.
- 20. A set of iron golf clubs according to claim 12, wherein said face is formed with score lines prior to being joined to said hosel member, while said head body is held with reference to respective reference positions of said score lines and face so that the end face of the fitting portion thereof may be machined to define a predetermined lie angle, said hosel member being joined to the end face of the fitting portion so that a central axis thereof may be perpendicular thereto.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-303101 |
Oct 1998 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part application of U.S. Ser. No. 09/325,818 filed on Jun. 4, 1999, now pending.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09325818 |
Jun 1999 |
US |
Child |
09893068 |
Jun 2001 |
US |