Putter head

a technology of putter head and putter head, which is applied in the field of putter head, can solve the problems of difficult to grasp the distance of the putt, dull hitting sound,

Inactive Publication Date: 2007-05-03
BRIDGESTONE SPORTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018] According to the putter head in accordance with the invention, the hitting sensation at the time of hitting a ball is soft, and the hitting sound is hard, so that the sense of distance is easy to grasp.

Problems solved by technology

However, with the conventional putter head with the face insert fitted in the head body, while the hitting sensation can be made soft by the face insert, the hitting sound becomes dull (low), so that there have been cases where it is difficult to grasp a sense of distance of the putt.

Method used

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Experimental program
Comparison scheme
Effect test

first embodiment

[0029]FIG. 1 is a rear view illustrating a face insert used in a putter head according to a first embodiment of the invention. FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1. A face insert 10 in accordance with this embodiment includes a high-hardness portion 12 that forms a hitting surface and a low-hardness portion 14 whose hardness is lower than that of the high-hardness portion 12. The structure provided is such that a recessed portion 16 is formed in the high-hardness portion 12 of a plate shape, and the low-hardness portion 14 of a plate shape is joined to the interior of this recessed portion 16. The face insert 10 in accordance with this embodiment is fitted in a recessed portion 104 formed in a face portion 102 of a head body 100, as shown in FIG. 3. Although, in the face insert 10 in accordance with this embodiment, the thickness of the low-hardness portion 14 and the depth of the recessed portion 16 are set to be equal, the thickness of the low-hardness p...

second embodiment

[0030]FIG. 4 is a rear view illustrating a face insert used in a putter head according to a second embodiment of the invention. FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4. A face insert 20 in accordance with this embodiment includes a high-hardness portion 22 that forms a hitting surface and a low-hardness portion 24 whose hardness is lower than that of the high-hardness portion 22. The structure provided is such that a recessed portion 26 is formed in the low-hardness portion 24 of a plate shape, and the high-hardness portion 22 of a plate shape is joined to the interior of this recessed portion 26. The use of the face insert 20 in accordance with this embodiment is similar to that of the first embodiment. Although, in the face insert 20 in accordance with this embodiment, the thickness of the high-hardness portion 22 and the depth of the recessed portion 26 are set to be equal, the thickness of the high-hardness portion 22 may be made greater than the depth of...

third embodiment

[0031]FIG. 6 is a cross-sectional view illustrating a a face insert used in a putter head according to a third embodiment of the invention. A face insert 30 in accordance with this embodiment includes a high-hardness portion 32 that forms a hitting surface and a low-hardness portion 34 whose hardness is lower than that of the high-hardness portion 32. The structure provided is such that the low-hardness portion 34 of a flat plate shape is joined to one surface of the high-hardness portion 32 of a flat plate shape. The use of the face insert 30 in accordance with this embodiment is similar to that of the first embodiment.

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PUM

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Abstract

A putter head that includes: a head body having a face portion; and a face insert fitted in the face portion, the face insert including: a high-hardness portion that forms a hitting surface, and a low-hardness portion jointed to the high-hardness portion and having a hardness lower than that of the high-hardness portion. The Shore D hardness of the high-hardness portion is 30 or more, the Shore D hardness of the low-hardness portion is 10 or more, and a difference between the Shore D hardness of the high-hardness portion and the Shore D hardness of the low-hardness portion is 5 or more.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a putter head with a face insert fitted in a face portion of a head body. [0003] 2. Description of the Related Art [0004] Conventionally, a putter head has been proposed in which a face insert made of a material different from that of a head body is fitted in a face portion of the head body. For example, JP-A-2004-236985 discloses a putter head in which a face insert having a layered structure integrally including a rubber elastic body layer, a sintered metal layer, and a fluororesin layer is fitted in the face portion of the head body. In addition, JP-A-2005-124730 discloses a putter head in which an elastic body-made face insert whose thickness increases gradually from the side of the vicinity of a sweet spot of the head toward a peripheral edge side is fitted in a face portion of a head body. SUMMARY OF THE INVENTION [0005] The above-described putter head with the face insert fitt...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A63B53/00A63B53/04A63B102/32
CPCA63B53/0487A63B2053/0416A63B53/0416
Inventor TATENO, ATSUO
Owner BRIDGESTONE SPORTS
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