US20070225084A1 - Iron type golf club head with low profile tuning port - Google Patents

Iron type golf club head with low profile tuning port Download PDF

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Publication number
US20070225084A1
US20070225084A1 US11805317 US80531707A US2007225084A1 US 20070225084 A1 US20070225084 A1 US 20070225084A1 US 11805317 US11805317 US 11805317 US 80531707 A US80531707 A US 80531707A US 2007225084 A1 US2007225084 A1 US 2007225084A1
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US
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Application
Patent type
Prior art keywords
cavity
club head
end
secondary cavity
golf club
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.)
Abandoned
Application number
US11805317
Inventor
Bradley Schweigert
Douglas Anderson
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.)
Karsten Manufacturing Corp
Original Assignee
Karsten Manufacturing Corp
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
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/047Heads iron-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0491Heads with added weights, e.g. changeable, replaceable

Abstract

An iron type golf club head includes a body having a front face arranged for impact with a golf ball, a back face, a heel portion and toe portion. A hosel is connected to the heel portion of the body. A perimeter weighting element protrudes rearwardly from the front face and defines a primary cavity in the back face of the body. The perimeter weighting element includes a top rail and a sole which extend between the body heel and toe portions along an upper portion and a lower portion, respectively, of the body. An interior wall extends from a first end connected to the perimeter weighting element adjacent the body heel portion through the primary cavity between the top rail and the sole to a second end connected to the perimeter weighting element adjacent the body toe portion to define an elongated secondary cavity or tuning port within the primary cavity. The interior wall is integrally formed on a bottom surface of the primary cavity and extends from the bottom surface of the primary cavity in a direction that is substantially perpendicular to the longitudinal axis of the hosel. This orientation of the interior wall provides the secondary cavity, i.e. the tuning port, with a low profile while also moving the center of gravity of the club head lower and farther away from the front face.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application is a continuation application and claims priority to U.S. patent application ser. No. 10/616,123, filed Jun. 7, 2005 entitled Iron Type Golf Club Head With Low Profile Tuning Port.
  • BACKGROUND OF THE INVENTION
  • This invention relates generally to golf equipment and, in particular, to an iron type golf club head with a low profile tuning port.
  • U.S. Pat. No. 6,206,790 to D. J. Kubica et al discloses an iron type golf club head having a primary cavity formed in its back face by a perimeter weighting element which protrudes rearwardly from its front face. A secondary cavity or tuning port for containing a weight adjustment member is defined within the primary cavity by an interior wall which is connected at one end to the perimeter weighting element adjacent a heel portion of the club head and at the other end to the perimeter weighting element adjacent a toe portion of the club head. The interior wall is integrally formed on a bottom surface of the primary cavity and extends from the bottom surface of the primary cavity in a direction that is substantially perpendicular to the front face of the club head.
  • SUMMARY OF THE INVENTION
  • An iron type golf club head includes a body having a front face arranged for impact with a golf ball, a back face, a sole, a top rail, a heel portion and a toe portion. A hosel having a longitudinal axis is connected to the heel portion of the body. A perimeter weighting element protrudes rearwardly from the front face and defines a primary cavity in the back face. The perimeter weighting element includes a top rail and a sole which extend between the body heel and toe portions along an upper portion and a lower portion, respectively, of the body. An interior wall extends from a first end connected to the perimeter weighting element adjacent the body heel portion through the primary cavity between the top rail and the sole to a second end connected to the perimeter weighting element adjacent the body toe portion defining an elongated secondary cavity or tuning port within the primary cavity. A weight adjustment member is disposed in the secondary cavity. The interior wall is integrally formed on a bottom surface of the primary cavity and extends from the bottom surface of the primary cavity in a direction that is substantially perpendicular to the longitudinal axis of the hosel. This orientation of the interior wall provides the secondary cavity, i.e. the tuning port, with a low profile while also moving the center of gravity of the club head lower and farther away from the front face.
  • DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of an iron type golf club head according to the present invention;
  • FIG. 2 is a toe end view of the golf club head of FIG. 1;
  • FIG. 3 is a heel end view of the golf club head of FIG. 1;
  • FIG. 4 is top view of the golf club head of FIG. 1;
  • FIG. 5 is a bottom view of the golf club head of FIG. 1;
  • FIG. 6 is a front elevational view of the golf club head of FIG. 1;
  • FIG. 7 is a rear elevational view of the golf club head of FIG. 1; and
  • FIGS. 8, 9 and 10 are sectional views taken along lines 8-8, 9-9 and 10-10 in FIG. 7.
  • DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIGS. 1-7, an iron type golf club head 10 includes a body 12 and a hosel 14 with a cylindrical bore 15 for receiving one end of a golf club shaft 13 (FIG. 7). Although the club head 10 is shown as a six-iron, it could also be any iron-type club head from a one-iron to a wedge. The body 12 has a heel portion 16 and a toe portion 18 that are spaced apart. The hosel 14 has a longitudinal axis A (FIG. 9) and includes a neck 20 connected to the heel portion 16 of the body 12. The club head 10 is preferably cast from suitable metal such as stainless steel. A front face 22 arranged for impact with a golf ball (not shown) is provided on the body 12 and extends between the body heel and toe portions 16, 18 along a frontal portion of the body 12. Disposed rearwardly of the front face 22 is a back face 23. When viewed as in FIG. 6 from a direction which is generally normal to the front face 22, the neck 20 has an upper surface 20 a and a lower surface 20 b.
  • A perimeter weighting element 24 protrudes rearwardly from the front face 22 and defines a primary cavity 26 in the back face 23. The perimeter weighting element 24 includes a top rail 28 and a sole 30. The primary cavity 26 is defined at its upper extremity by the top rail 28 and at its lower extremity by the sole 30. The top rail 28 extends between the body heel and toe portions 16, 18 along an upper portion of the body 12, and the sole 30 extends between the body heel and toe portions 16, 18 along a lower portion of the body 12.
  • The sole 30 has a lower trailing edge 32 and a lower backsurface 34 of the perimeter weighting element 24 is located adjacent the lower trailing edge 32. This lower backsurface 34 preferably slopes upwardly and inwardly from the trailing edge 32 toward the front face 22. The lower backsurface 34 merges with a lower inner surface 36 of the perimeter weighting element 24 along an upper trailing edge 38 of the sole 30.
  • As seen in FIGS. 4 and 6, grooves 40, 42 are formed in the front face 22 of the body 12. The grooves 40, 42 are elongated in a direction extending between the heel and toe portions 16, 18 of the body 12 and include the grooves 40 of equal length and the grooves 42 of varying length.
  • The primary cavity 26 defined by the perimeter weighting element 24 has a bottom surface 44. Formed integrally on the primary cavity bottom surface 44 is an interior wall 46 that extends from a first end 46 a located adjacent the body heel portion 16 through the primary cavity 26 between the top rail 28 and the sole 30 to a second end 46 b located adjacent the body toe portion 18. The first and second ends 46 a, 46 b of the interior wall 46 are integrally connected to the perimeter weighting element 24 adjacent the body heel and toe portions 16, 18 defining an elongated secondary cavity or tuning port 48 within the primary cavity 26. The inner surface 36 of the perimeter weighting element 24 is disposed between the first and second ends 46 a, 46 b of the interior wall 46 and forms a lower extremity of the secondary cavity 48. An inner surface 50 of the interior wall 46 forms an upper extremity of the secondary cavity 48. The interior wall 46 has a height dimension H (FIG. 9) that varies between its first and second ends 46 a, 46 b as seen in FIG. 1. It will be understood that the height dimension H of the interior wall 46 is greater at the second end 46 b which is adjacent the body toe portion 18 than at the first end 46 a which is adjacent the body heel portion 16. The interior wall 46 extends from the bottom surface 44 of the primary cavity 26 in a direction D (FIG. 9) that is substantially perpendicular to the longitudinal axis A of the hosel 14. This orientation of interior wall 46 provides the secondary cavity 48, i.e. the tuning port, with a low profile while also moving the center of gravity of the club head 10 lower and farther away from the front face 22 for improved performance.
  • A weight adjustment member 52 (partially broken away in FIG. 1), such as disclosed in U.S. Pat. No. 6,206,790 to D. J. Kubica et al and incorporated herein by reference, having a predetermined volume is disposed in the secondary cavity 48 and is secured therein by suitable adhesive such as epoxy. The weight adjustment member 52 is selected from a plurality of weight adjustment members (not shown) that have the same predetermined volume but have different densities and thus different weights. This plurality of weight adjustment members preferably covers a range from about four grams to about thirty grams in one gram increments. This range of weights should be sufficient to cover different shaft lengths and different types of shafts that may be attached to the club head 10. Therefore, the desired weight of the club head 10 may be adjusted without changing the predetermined volume of the weight adjustment member 52. By selecting a weight adjustment member 52 of proper weight, manufacturing tolerances can be overcome and the swingweight of a golf club may be fine tuned. The weight adjustment member 52 is preferably formed of plastic. Since the weight adjustment member 52 is located near the center of gravity of the club head 10, the club head center of gravity will not change significantly when selecting any of the plurality of weight adjustment members.
  • In order to provide loft and lie adjustment of the club head 10, a notch 54 formed in the lower surface 20 b of the hosel neck 20 allows bending of the hosel 14 at the neck 20 with no bending of the portion of the hosel 14 containing the bore 15. Such a notch is disclosed in U.S. Pat. No. 6,186,903 to L. C. Beebe et al, incorporated herein by reference.

Claims (20)

  1. 1. A golf club head comprising:
    a body comprising a front surface to impact a golf ball, a rear surface substantially parallel to the front surface, a heel portion, and a toe portion;
    a hosel coupled to the heel portion of the body;
    a perimeter weight behind a perimeter of the front face and extending in a direction from the rear surface away from the front surface and defining a primary cavity, wherein the primary cavity comprises a lower inner surface and an upper inner surface; and
    an interior wall extending along the rear surface from a first end at the heel portion to a second end at the toe portion and between the lower inner surface and the upper inner surface and defining a secondary cavity between the interior wall and a portion of the lower inner surface of the perimeter weight, wherein the secondary cavity comprises a secondary cavity upper surface, a secondary cavity lower surface, and a secondary cavity rear surface,
    wherein:
    the interior wall comprises a height, and
    the height increases continuously from the first end to the second end.
  2. 2. The golf club head of claim 1, wherein:
    the secondary cavity comprises a secondary cavity width, and
    the secondary cavity width varies from the first end to the second end.
  3. 3. The golf club head of claim 2, wherein:
    the secondary cavity width increases from the first end to a maximum at a center of the secondary cavity, and
    the secondary cavity width decreases from the maximum at the center of the secondary cavity to the second end.
  4. 4. The golf club head of claim 1, wherein the secondary cavity rear surface is substantially normal to a reference ground plane when the golf club head is at an address position.
  5. 5. The golf club head of claim 1, wherein the secondary cavity upper is oval-shaped.
  6. 6. The golf club head of claim 1, wherein:
    the lower inner surface comprises a height that varies from the heel portion to the toe portion, and
    the height of the lower inner surface is greatest at the toe portion.
  7. 7. The golf club head of claim 1, further comprising a weight adjustment member substantially complimentary in shape to the secondary cavity and configured to occupy the secondary cavity.
  8. 8. A golf club head comprising:
    a body comprising a front surface comprising a loft angle, a first rear surface substantially parallel to the front surface, and a heel portion opposite a toe portion;
    a hosel coupled to the heel portion of the body;
    a perimeter weight behind a perimeter of the front surface and defining a first cavity; and
    an interior wall within the first cavity and extending along the first rear surface from a first end at the heel portion to a second end at the toe portion and defining an oval-shaped second cavity, the oval-shaped second cavity further comprising a second rear surface, wherein an angle between the first rear surface and the interior wall comprises a complimentary angle to the loft angle.
  9. 9. The golf club head of claim 8, wherein:
    the interior wall comprises a height, and
    the height increases continuously from the first end to the second end.
  10. 10. The golf club head of claim 8, wherein:
    the oval-shaped second cavity comprises a second cavity width, and
    the second cavity width varies from the first end to the second end.
  11. 11. The golf club head of claim 10, wherein:
    the oval-shaped second cavity width increases from the first end to a maximum at a center of the oval-shaped second cavity, and
    the oval-shaped second cavity width decreases from the maximum at the center of the second cavity to the second end.
  12. 12. The golf club head of claim 8, wherein the second rear surface is substantially normal to a reference ground plane when the golf club head is at an address position.
  13. 13. A method for manufacturing a golf club head comprising:
    forming a body comprising a front surface to impact a golf ball, a rear surface substantially parallel to the front surface, a heel portion, and a toe portion;
    providing a perimeter weight behind a perimeter of the front face and extending in a direction from the rear surface away from the front surface and defining a primary cavity, wherein the primary cavity comprises a lower inner surface and an upper inner surface; and
    forming an interior wall integrally with the body, the interior wall extending along the rear surface from a first end at the heel portion to a second end at the toe portion and between the lower inner surface and the upper inner surface and defining a secondary cavity between the interior wall and a portion of the lower inner surface of the perimeter weight, wherein the secondary cavity comprises a secondary cavity upper surface, a secondary cavity lower surface, and a secondary cavity rear surface,
    wherein:
    the interior wall comprises a height, and
    the height increases continuously from the first end to the second end.
  14. 14. The method of claim 13, wherein forming the interior wall further comprises:
    providing the secondary cavity width to increase from the first end to a maximum at a center of the secondary cavity, and providing the secondary cavity width to decrease from the maximum at the center of the secondary cavity to the second end.
  15. 15. The method of claim 13, wherein defining the secondary cavity further comprises:
    providing the secondary cavity rear surface substantially normal to a reference ground plane when the golf club head is at an address position.
  16. 16. The method of claim 13, wherein forming the interior wall further comprises:
    defining the secondary cavity to be oval-shaped.
  17. 17. The method of claim 13, wherein forming the interior wall further comprises forming the interior wall to extend from the rear surface in a direction substantially parallel to a reference ground plane when the golf club head is at an address position.
  18. 18. The method of claim 13, further comprises determining a weight adjustment.
  19. 19. The method of claim 18, further comprises selecting a weight adjustment member based on determining the weight adjustment, the weight adjustment member comprising a weight at a size to occupy the secondary cavity.
  20. 20. The method of claim 19, further comprises inserting and affixing the weight adjustment member within the secondary cavity.
US11805317 2003-07-08 2007-05-22 Iron type golf club head with low profile tuning port Abandoned US20070225084A1 (en)

Priority Applications (2)

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US10616123 US20050009632A1 (en) 2003-07-08 2003-07-08 Iron type golf club head with low profile tuning port
US11805317 US20070225084A1 (en) 2003-07-08 2007-05-22 Iron type golf club head with low profile tuning port

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US11805317 US20070225084A1 (en) 2003-07-08 2007-05-22 Iron type golf club head with low profile tuning port

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GB2403659A (en) 2005-01-12 application
CA2472823A1 (en) 2005-01-08 application
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US20050009632A1 (en) 2005-01-13 application
CA2472823C (en) 2009-04-28 grant

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