Hollow golf club head having sole stress reducing feature
First Claim
Patent Images
1. A hollow 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 (400) includes an engineered impact point (EIP), a top edge height (TEH), and a lower edge height (LEH);
(ii) a sole (700) positioned at a bottom portion of the golf club head (400);
(iii) a crown (600) positioned at a top portion of the golf club head (400);
(iv) 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);
(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 stress reducing feature (1000) including a sole located SRF (1300) located on the sole (700), wherein the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF width (1340), and a SSRF depth (1350) that is less at the face centerline than at least one point on the heel side (406) of the face centerline, wherein the maximum SSRF width (1340) is at least ten percent of the Zcg distance and the maximum SSRF depth (1350) is at least ten percent of the Ycg distance, and wherein the sole located SRF (1300) has a SSRF wall thickness (1360) that is less than sixty percent of a maximum face thickness (530).
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Accused Products
Abstract
A hollow golf club head incorporating a stress reducing feature including a sole located stress reducing feature. The location and size of the sole stress reducing feature, and their relationship to one another and other club head engineering variables, play a significant role in selectively increasing deflection of the face.
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Citations
23 Claims
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1. A hollow golf club head (400) comprising:
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(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 (400) includes an engineered impact point (EIP), a top edge height (TEH), and a lower edge height (LEH); (ii) a sole (700) positioned at a bottom portion of the golf club head (400); (iii) a crown (600) positioned at a top portion of the golf club head (400); (iv) 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); (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 stress reducing feature (1000) including a sole located SRF (1300) located on the sole (700), wherein the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF width (1340), and a SSRF depth (1350) that is less at the face centerline than at least one point on the heel side (406) of the face centerline, wherein the maximum SSRF width (1340) is at least ten percent of the Zcg distance and the maximum SSRF depth (1350) is at least ten percent of the Ycg distance, and wherein the sole located SRF (1300) has a SSRF wall thickness (1360) that is less than sixty percent of a maximum face thickness (530). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hollow golf club head (400) comprising:
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(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 (400) includes an engineered impact point (EIP) and a top edge height (TEH); (ii) a sole (700) positioned at a bottom portion of the golf club head (400); (iii) a crown (600) positioned at a top portion of the golf club head (400); (iv) 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); (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 stress reducing feature (1000) including a sole located SRF (1300) located on the sole (700), wherein the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316), a SSRF leading edge (1320) having a SSRF leading edge offset (1322) that is less than seventy-five percent of the difference between the maximum top edge height (TEH) and the minimum lower edge height (LEH), a SSRF width (1340), and a SSRF depth (1350), wherein the maximum SSRF width (1340) is at least forty percent of the Zcg distance and at least fifty percent of the minimum SSRF leading edge offset (1322), and the maximum SSRF depth (1350) is at least ten percent of the Ycg distance. - View Dependent Claims (10, 11, 12, 13)
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14. A hollow golf club head (400) comprising:
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(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 (400) includes an engineered impact point (EIP), a top edge height (TEH), and a lower edge height (LEH); (ii) a sole (700) positioned at a bottom portion of the golf club head (400); (iii) a crown (600) positioned at a top portion of the golf club head (400); (iv) 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); (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 stress reducing feature (1000) including a sole located SRF (1300) located on the sole (700), wherein the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF width (1340) that is less at the face centerline than at least one point on the heel side (406) of the face centerline, and a SSRF depth (1350), wherein the maximum SSRF width (1340) is at least ten percent of the Zcg distance and the maximum SSRF depth (1350) is at least ten percent of the Ycg distance, and wherein the sole located SRF (1300) has a SSRF wall thickness (1360) that is less than sixty percent of a maximum face thickness (530). - View Dependent Claims (15, 16, 17, 18)
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19. A hollow golf club head (400) comprising:
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(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 (400) includes an engineered impact point (EIP) and a top edge height (TEH); (ii) a sole (700) positioned at a bottom portion of the golf club head (400); (iii) a crown (600) positioned at a top portion of the golf club head (400); (iv) 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); (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 stress reducing feature (1000) including a sole located SRF (1300) located on the sole (700), wherein the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF width (1340), a SSRF depth (1350) and a SSRF cross-sectional area (1370) that is less at a face centerline (FC) than at least one point on the toe side (408) of the face centerline (FC), wherein the maximum SSRF width (1340) is at least forty percent of the Zcg distance and at least fifty percent of the minimum SSRF leading edge offset (1322), and the maximum SSRF depth (1350) is at least ten percent of the Ycg distance. - View Dependent Claims (20, 21, 22, 23)
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Specification