WOOD-TYPE GOLF CLUB HEAD

• US 20090137338A1
• Filed: 09/17/2008
• Published: 05/28/2009
• Est. Priority Date: 11/27/2007
• Status: Abandoned Application

• Current Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Original Assignee: Bridgestone Sports Co Limited (Bridgestone Corporation)
• Inventors: KAJITA, Ryota
• Application Number:
  US12/212,223
• Publication Number:
  US 20090137338A1
• Time in Patent Office: Days
• US Class Current: 473/345
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 71/146 Golf gloves

Abstract

According to one embodiment, a wood-type golf club head includes: a face portion; a sole portion; a crown portion; a leading edge defined between the face portion and the sole portion; an upper edge defined between the face portion and the crown portion; wherein, at a basic state that the golf club head is set on a horizontal plane, a contact point between the horizontal plane and the sole portion is defined as a ground point, wherein a plane passing through the ground point and extending in a direction of a target line is defined as a vertical plane, wherein a height from the horizontal plane to a first intersection point where the face upper edge intersects the vertical plane is defined as a face height H1, and wherein a height H3 from the horizontal plane to a second intersection point where the vertical plane intersects the leading edge is defined in a range between ⅓ and ½ of the face height H1.

Claims

1. A wood-type golf club head comprising:

a face portion;

a sole portion;

a crown portion;

a leading edge defined between the face portion and the sole portion;

an upper edge defined between the face portion and the crown portion;

wherein, at a basic state that the golf club head is set on a horizontal plane, a contact point between the horizontal plane and the sole portion is defined as a ground point,

wherein a plane passing through the ground point and extending in a direction of a target line is defined as a vertical plane,

wherein a height from the horizontal plane to a first intersection point where the face upper edge intersects the vertical plane is defined as a face height H1, and

wherein a height H3 from the horizontal plane to a second intersection point where the vertical plane intersects the leading edge is defined in a range between ⅓ and

½

of the face height H1.

2. The wood-type golf club head according to claim 1, wherein the height H3 is defined in a range between ⅙

and ½

of the face height H1.

3. The wood-type golf club head according to claim 1, wherein the height H3 is defined in a range between ⅛

and ½

of the height H1.

4. The wood-type golf club head according to claim 1, wherein a third intersection point where the face portion intersects a perpendicular line drawn from a center of gravity of the golf club head onto the face portion is lower than a face center FC of the face portion, the face center FC being defined as

FC=(H1−

H3)/2+H3.

5. The wood-type golf club head according to claim 1 further comprising a chamfer portion formed between the leading edge and the sole portion,

wherein the sole portion includes a first sole portion and a second sole portion including the ground point,

wherein a height H0 from the horizontal plane to the ground point is lower than a height H4 from the horizontal plane to a lowermost portion of the first sole portion, and

wherein the height H0 is lower than a height from the horizontal plane to a lowermost point of the chamfered portion;

6. The wood-type golf club head according to claim 5, wherein the height H4 is in a range from 5 mm to 20 mm.

7. The wood-type golf club head according to claim 5, wherein a height H5 from the leading edge to the lowermost portion of the first sole portion is in a range from 2 mm to 5 mm.

8. The wood-type golf club head according to claim 5, wherein the chamfered portion is extend downward from the leading edge and in a direction opposite to the target line direction.