Iron head
First Claim
Patent Images
1. An iron head comprising:
- a striking face;
a backside surface;
a sole surface;
a hosel;
a recess portion provided in an upper portion of the backside surface;
a protruding portion provided at a lower portion of the backside surface and projecting backward;
a first hollow portion provided on a heel side of the protruding portion; and
a second hollow portion disposed on a toe side and inside the protruding portion, said protruding portion including a middle portion between the first hollow portion and the second hollow portion,wherein said first hollow portion is disposed away from the second hollow portion so that a distance between the first hollow portion and the second hollow portion in a direction from the heel side to the toe side gradually increases from an upper surface of the protruding portion toward the sole surface, andsaid cavity portion has a first maximum length in a vertical direction parallel with the striking face is set between 20% and 50% of a second maximum length of the striking face in the vertical direction.
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Accused Products
Abstract
An iron head includes a striking face; a backside surface; a sole surface; a hosel; a recess portion provided in an upper portion of the backside surface; a protruding portion provided at a lower portion of the backside surface and projecting backward; a first hollow portion provided on a heel side of the protruding portion; and a second hollow portion disposed on a toe side and inside the protruding portion. The protruding portion includes a middle portion between the first hollow portion and the second hollow portion. The first hollow portion is disposed away from the second hollow portion by a distance gradually increasing from an upper surface of the protruding portion toward the sole surface.
122 Citations
16 Claims
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1. An iron head comprising:
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a striking face; a backside surface; a sole surface; a hosel; a recess portion provided in an upper portion of the backside surface; a protruding portion provided at a lower portion of the backside surface and projecting backward; a first hollow portion provided on a heel side of the protruding portion; and a second hollow portion disposed on a toe side and inside the protruding portion, said protruding portion including a middle portion between the first hollow portion and the second hollow portion, wherein said first hollow portion is disposed away from the second hollow portion so that a distance between the first hollow portion and the second hollow portion in a direction from the heel side to the toe side gradually increases from an upper surface of the protruding portion toward the sole surface, and said cavity portion has a first maximum length in a vertical direction parallel with the striking face is set between 20% and 50% of a second maximum length of the striking face in the vertical direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An iron head comprising:
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a striking face; a backside surface; a sole surface; a hosel; a recess portion provided in an upper portion of the backside surface; a protruding portion provided at a lower portion of the backside surface and projecting backward; a first hollow portion provided on a heel side of the protruding portion; and a second hollow portion disposed on a toe side and inside the protruding portion, said protruding portion including a middle portion between the first hollow portion and the second hollow portion, wherein said first hollow portion is disposed away from the second hollow portion so that a distance between the first hollow portion and the second hollow portion in a direction from the heel side to the toe side gradually increases from an upper surface of the protruding portion toward the sole surface, and said protruding portion has a third maximum length in a vertical direction parallel with the striking face is set between 48% and 78% of a second maximum length of the striking face in the vertical direction. - View Dependent Claims (16)
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Specification