Golf club head having a stress reducing feature with aperture
First Claim
Patent Images
1. A hollow golf club having a stress reducing feature with aperture comprising:
- (A) a shaft (200) having a proximal end (210) and a distal end (220);
(B) a grip (300) attached to the shaft proximal end (210); and
(C) a golf club head (400) attached to the shaft distal end (220) and having;
(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, wherein the face (400) includes a top edge height (TEH) and a lower edge height (LEH), and wherein the face (400) has a face thickness that varies from a minimum thickness to a maximum thickness;
(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 skirt (800) positioned around a portion of a periphery of the golf club head (400) between the sole (700) and the crown (600), wherein the face (500), sole (700), crown (600), and skirt (800) define an outer shell that further defines a head volume, and wherein the golf club head (400) has a rear portion (404) opposite the face (500);
(v) 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 receives the shaft distal end (220) for attachment to 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);
(vi) a center of gravity (CG) of the golf club head (400) 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;
(vii) a stress reducing feature (1000) including a sole located SRF (1300) located at least partially on the sole (700), wherein;
(a) the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316) where the SSRF length (1310) is at least as great as a heel blade length section (Abl), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF trailing edge (1330), a SSRF volume, a SSRF width (1340), and a SSRF depth (1350), wherein at least a portion of the sole located SRF (1300) contains a secondary material having a secondary material compressive strength that is less than 50% of a outer shell compressive strength and a density less than 3 g/cm3, and wherein the sole located SRF (1300) has at least one of (a) a portion of the SSRF width (1340) is at least ten percent of the Zcg distance, and (b) a portion of the SSRF depth (1350) is at least ten percent of the Ycg distance; and
(b) the sole located SRF (1300) has a SSRF aperture (1400) recessed from the sole (700) and extending through the outer shell, wherein the SSRF aperture (1400) has a SSRF aperture length (1410) between a SSRF aperture toe-most point (1412) and a SSRF aperture heel-most point (1416), and a SSRF aperture width (1440); and
(c) the golf club head (400) has a characteristic time of at least 220 microseconds.
8 Assignments
0 Petitions
Accused Products
Abstract
A golf club incorporating a stress reducing feature, including an aperture, located at least partially on the sole of the club head. The location and size of the stress reducing feature and aperture, and their relationship to one another, play a significant role in selectively improving the performance of the golf club.
717 Citations
20 Claims
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1. A hollow golf club having a stress reducing feature with aperture comprising:
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(A) a shaft (200) having a proximal end (210) and a distal end (220); (B) a grip (300) attached to the shaft proximal end (210); and (C) a golf club head (400) attached to the shaft distal end (220) and having; (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, wherein the face (400) includes a top edge height (TEH) and a lower edge height (LEH), and wherein the face (400) has a face thickness that varies from a minimum thickness to a maximum thickness; (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 skirt (800) positioned around a portion of a periphery of the golf club head (400) between the sole (700) and the crown (600), wherein the face (500), sole (700), crown (600), and skirt (800) define an outer shell that further defines a head volume, and wherein the golf club head (400) has a rear portion (404) opposite the face (500); (v) 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 receives the shaft distal end (220) for attachment to 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); (vi) a center of gravity (CG) of the golf club head (400) 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; (vii) a stress reducing feature (1000) including a sole located SRF (1300) located at least partially on the sole (700), wherein; (a) the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316) where the SSRF length (1310) is at least as great as a heel blade length section (Abl), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF trailing edge (1330), a SSRF volume, a SSRF width (1340), and a SSRF depth (1350), wherein at least a portion of the sole located SRF (1300) contains a secondary material having a secondary material compressive strength that is less than 50% of a outer shell compressive strength and a density less than 3 g/cm3, and wherein the sole located SRF (1300) has at least one of (a) a portion of the SSRF width (1340) is at least ten percent of the Zcg distance, and (b) a portion of the SSRF depth (1350) is at least ten percent of the Ycg distance; and (b) the sole located SRF (1300) has a SSRF aperture (1400) recessed from the sole (700) and extending through the outer shell, wherein the SSRF aperture (1400) has a SSRF aperture length (1410) between a SSRF aperture toe-most point (1412) and a SSRF aperture heel-most point (1416), and a SSRF aperture width (1440); and (c) the golf club head (400) has a characteristic time of at least 220 microseconds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A hollow golf club having a stress reducing feature with aperture comprising:
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(A) a shaft (200) having a proximal end (210) and a distal end (220); (B) a grip (300) attached to the shaft proximal end (210); and (C) a golf club head (400) attached to the shaft distal end (220) and having; (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, wherein the face (400) includes a top edge height (TEH) and a lower edge height (LEH), and wherein the face (400) has a face thickness that varies from a minimum thickness to a maximum thickness; (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 skirt (800) positioned around a portion of a periphery of the golf club head (400) between the sole (700) and the crown (600), wherein the face (500), sole (700), crown (600), and skirt (800) define an outer shell that further defines a head volume, and wherein the golf club head (400) has a rear portion (404) opposite the face (500); (v) 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 receives the shaft distal end (220) for attachment to 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); (vi) a center of gravity (CG) of the golf club head (400) 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; (vii) a stress reducing feature (1000) including a sole located SRF (1300) located at least partially on the sole (700), wherein; (a) the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316) where the SSRF length (1310) is at least as great as a heel blade length section (Abl), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF trailing edge (1330), a SSRF volume, a SSRF width (1340), and a SSRF depth (1350), wherein at least a portion of the sole located SRF (1300) contains a secondary material having a density less than 3 g/cm3, and wherein the sole located SRF (1300) has at least one of (a) a portion of the SSRF width (1340) is at least ten percent of the Zcg distance, and (b) a portion of the SSRF depth (1350) is at least ten percent of the Ycg distance; and (b) the sole located SRF (1300) has a SSRF aperture (1400) recessed from the sole (700) and extending through the outer shell, wherein the SSRF aperture (1400) has a SSRF aperture length (1410) between a SSRF aperture toe-most point (1412) and a SSRF aperture heel-most point (1416), and a SSRF aperture width (1440), wherein at least a portion of the SSRF aperture (1400) is covered by the secondary material, and wherein the SSRF aperture length (1410) is at least fifty percent of the Xcg distance. - View Dependent Claims (17, 18, 19)
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20. A hollow golf club having a stress reducing feature with aperture comprising:
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(A) a shaft (200) having a proximal end (210) and a distal end (220); (B) a grip (300) attached to the shaft proximal end (210); and (C) a golf club head (400) attached to the shaft distal end (220) and having; (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, wherein the face (400) includes a top edge height (TEH) and a lower edge height (LEH), and wherein the face (400) has a face thickness that varies from a minimum thickness to a maximum thickness; (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 skirt (800) positioned around a portion of a periphery of the golf club head (400) between the sole (700) and the crown (600), wherein the face (500), sole (700), crown (600), and skirt (800) define an outer shell that further defines a head volume of less than 300 cubic centimeters, and wherein the golf club head (400) has a rear portion (404) opposite the face (500) and a portion of the outer shell has a density of less than 5 g/cm3; (v) 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 receives the shaft distal end (220) for attachment to 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); (vi) a center of gravity (CG) of the golf club head (400) located; (a) vertically toward the crown (600) of the golf club head (400) from the origin point a distance Ycg that is less than 0.65″
;(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; (vii) a stress reducing feature (1000) including a sole located SRF (1300) located at least partially on the sole (700), wherein; (a) the sole located SRF (1300) has a SSRF length (1310) between a SSRF toe-most point (1312) and a SSRF heel-most point (1316) where the SSRF length (1310) is at least as great as a heel blade length section (Abl), a SSRF leading edge (1320) having a SSRF leading edge offset (1322), a SSRF trailing edge (1330), a SSRF volume, a SSRF width (1340), and a SSRF depth (1350), wherein at least a portion of the sole located SRF (1300) contains a secondary material having a density less than 3 g/cm3, and wherein the sole located SRF (1300) has at least one of (a) a portion of the SSRF width (1340) is at least ten percent of the Zcg distance, and (b) a portion of the SSRF depth (1350) is at least ten percent of the Ycg distance; (b) the sole located SRF (1300) has a SSRF aperture (1400) recessed from the sole (700) and extending through the outer shell, wherein the SSRF aperture (1400) has a SSRF aperture length (1410) between a SSRF aperture toe-most point (1412) and a SSRF aperture heel-most point (1416), and a SSRF aperture width (1440), wherein at least a portion of the SSRF aperture (1400) is covered by the secondary material, and wherein the SSRF aperture length (1410) is at least fifty percent of the Xcg distance; and (c) the golf club head (400) has a characteristic time of at least 220 microseconds.
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Specification