Iron head
First Claim
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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, said recess portion having a first length in a vertical direction in parallel to the striking face;
a protruding portion provided at a lower portion of the backside surface and projecting backward, said protruding portion having a second length greater than the first length in the vertical direction, said protruding portion having an upper surface curved upwardly;
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 striking face includes a plurality of score lines including a longest score line, said middle portion being disposed so that a center line of the middle portion is aligned with a center line of the longest score line.
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Accused Products
Abstract
An iron head is provided with a recess portion provided in an upper portion of a backside surface thereof, and a protruding portion provided at a lower portion of the backside surface. A first hollow portion is provided on a heel side from a bottom surface of a recess portion to a sole surface; and a second hollow portion is disposed on a toe side. The first hollow portion and the second hollow portion do not exist behind a sweet area. The first hollow portion and the second hollow portion may be filled with a shock absorber formed of a rubber or an elastomer.
276 Citations
25 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, said recess portion having a first length in a vertical direction in parallel to the striking face; a protruding portion provided at a lower portion of the backside surface and projecting backward, said protruding portion having a second length greater than the first length in the vertical direction, said protruding portion having an upper surface curved upwardly; 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 striking face includes a plurality of score lines including a longest score line, said middle portion being disposed so that a center line of the middle portion is aligned with a center line of the longest score line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. 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, said protruding portion having an upper surface curved upwardly; and a hollow portion extending from a toe side to a heel side of the protruding portion, said protruding portion including a middle portion with a first face plate thickness in a toe to heel direction thereof, said first face plate thickness being larger than a second face plate thickness on a toe side with respect to the middle portion and a third face plate thickness on a heel side with respect to the middle portion, said first face plate thickness increasing gradually from an upper portion toward a lower portion of the middle portion, wherein said middle portion is situated at a center point of the striking face. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. 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, said protruding portion having an upper surface curved upwardly; a first hollow portion provided on a heel side of the protruding portion, said first hollow portion having a first length in a vertical direction; and a second hollow portion disposed on a toe side and inside the protruding portion, said second hollow portion having a second length in the vertical direction greater than the first length, said protruding portion including a middle portion between the first hollow portion and the second hollow portion. - View Dependent Claims (22, 23, 24)
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25. 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, said recess portion having a first length in a vertical direction in parallel to the striking face; a protruding portion provided at a lower portion of the backside surface and projecting backward, said protruding portion having a second length greater than the first length in the vertical direction, said protruding portion having an upper surface curved upwardly; 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 by a distance equal to a distance between the upper surface of the protruding portion and the sole surface.
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Specification