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Iron-type golf club head having a sole stress reducing feature

  • US 9,610,483 B2
  • Filed: 05/01/2015
  • Issued: 04/04/2017
  • Est. Priority Date: 06/01/2010
  • Status: Active Grant
First Claim
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1. An iron-type golf club head (400) comprising:

  • (i) 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 (500) includes an engineered impact point (EIP), a face height, a top edge height (TEH), and a lower edge height (LEH), wherein the face (500) has a blade length (BL) measured horizontally from an origin point toward a toe side (408) of the golf club head (400) to the most distant point on the golf club head (400) in this direction, wherein the blade length (BL) includes a toe blade length section (Bbl) and 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);

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

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

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

    (a) vertically 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; 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; and

    (v) a stress reducing feature (1000) including a sole located SRF (1300) located at least partially on the sole (700), wherein the sole located SRF (1300) has a SSRF length (1310) that is at least as great as the heel blade length section (Abl), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF width (1340), a SSRF depth (1350, and a SSRF front wall spaced away from a rear surface of the face (500) by a void, wherein at least one point along the SSRF length (1310) has the SSRF width (1340) of at least ten percent of the Zcg distance and at least one point along the SSRF length (1310) has the SSRF depth (1350) of at least ten percent of the Ycg distance.

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