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Golf club head having a stress reducing feature and shaft connection system socket

  • US 9,956,460 B2
  • Filed: 04/27/2017
  • Issued: 05/01/2018
  • Est. Priority Date: 06/01/2010
  • Status: Active Grant
First Claim
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1. A golf club head (400) comprising:

  • (i) a bore having a center that defines a shaft axis (SA) which intersects with a horizontal ground plane (GP) to define an origin point, wherein the bore is located at a heel side (406) of the golf club head (400), and wherein a toe side (408) of the golf club head (400) is located opposite of the heel side (406);

    (ii) a face (500) positioned at a front portion (402) of the golf club head (400) where the golf club head (400) impacts a golf ball, opposite a rear portion (404) of the golf club head (400), wherein the face (400) includes an engineered impact point (EIP), a blade length (BL) measured horizontally from the origin point toward the toe side (408) of the golf club head (400) to the most distant point on the golf club head in this direction, wherein the blade length (BL) includes a heel blade length section (Abl) measured in the same direction as the blade length (BL) from the origin point to the engineered impact point (EIP), and a toe blade length section (Bbl);

    (iii) a sole (700) positioned at a bottom portion of the golf club head (400);

    (iv) a crown (600) positioned at a top portion of the golf club head (400);

    (v) a center of gravity (CG) located;

    (a) vertically toward the crown (600) of the golf club head (400) from the origin point a distance Ycg;

    (b) horizontally from the origin point toward the toe side (408) of the golf club head (400) a distance Xcg that is generally parallel to the face (500) and the ground plane (GP); and

    (c) a distance Zcg from the origin toward the rear portion (404) in a direction generally orthogonal to the vertical direction used to measure Ycg and generally orthogonal to the horizontal direction used to measure Xcg;

    (vi) a club moment arm from the CG to the engineered impact point (EIP);

    (vii) a shaft connection system socket (2000) extending from the bottom portion of the golf club head (400) into the interior of the outer shell toward the top portion of the club head (400) and having a socket depth (2040); and

    (viii) a stress reducing feature (1000) extending across a portion of the golf club head (400) and having a length between a toe-most point and a heel-most point, and the length is at least as great as the Zcg distance, a leading edge having a leading edge offset, a trailing edge, a stress reducing feature width between the leading edge and the trailing edge, and a stress reducing feature depth, wherein the socket depth (2040) of at least a portion of the shaft connection system socket (2000) is larger than a greatest stress reducing feature depth.

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