IRON TYPE GOLF CLUB HEAD AND SET
First Claim
Patent Images
1. An iron-type golf club head, comprising:
- A) a heel portion, a toe portion, a top line portion, a sole portion, a leading edge, a trailing edge, a face oriented at a loft, and a hosel having a bore and a bore center that defines a shaft axis intersecting a horizontal ground plane to define an origin point;
B) wherein the iron-type golf club head includes a sole channel extending from the exterior of the sole portion toward the face, wherein the sole channel has a channel leading edge, a channel trailing edge, a channel width, a channel length, a channel depth, a channel leading edge setback, and a channel axis establishing a channel angle from the vertical;
C) wherein the channel axis intersects the face at an axis-to-face intersection point for at least one position along the channel length; and
D) wherein the iron-type golf club head has a center of gravity located;
(i) vertically toward the top line portion from the origin point a distance Ycg;
(ii) horizontally from the origin point toward the toe portion a distance Xcg;
(iii) a distance Zcg from the origin toward the trailing edge in a direction generally orthogonal to the vertical direction used to measure the Ycg distance and generally orthogonal to the horizontal direction used to measure the Xcg distance.
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Accused Products
Abstract
An iron-type golf club head having a sole channel extending from an exterior of a sole portion toward a face. The sole channel has an axis that intersects the face at an axis-to-face intersection point for at least one position along a channel length, and preferably at least 25% of the channel length. The elevation of the intersection point may below the Ycg distance and the axis defines an angle from the vertical that may be related to the loft. The iron-type golf club head may be incorporated in a set containing club heads with varying degrees of unsupported face area.
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Citations
34 Claims
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1. An iron-type golf club head, comprising:
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A) a heel portion, a toe portion, a top line portion, a sole portion, a leading edge, a trailing edge, a face oriented at a loft, and a hosel having a bore and a bore center that defines a shaft axis intersecting a horizontal ground plane to define an origin point; B) wherein the iron-type golf club head includes a sole channel extending from the exterior of the sole portion toward the face, wherein the sole channel has a channel leading edge, a channel trailing edge, a channel width, a channel length, a channel depth, a channel leading edge setback, and a channel axis establishing a channel angle from the vertical; C) wherein the channel axis intersects the face at an axis-to-face intersection point for at least one position along the channel length; and D) wherein the iron-type golf club head has a center of gravity located; (i) vertically toward the top line portion from the origin point a distance Ycg; (ii) horizontally from the origin point toward the toe portion a distance Xcg; (iii) a distance Zcg from the origin toward the trailing edge in a direction generally orthogonal to the vertical direction used to measure the Ycg distance and generally orthogonal to the horizontal direction used to measure the Xcg distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A set of iron-type golf club heads, comprising:
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A) a first iron-type golf club head having a first loft of 30 degrees or less, a first heel portion, a first toe portion, a first top line portion, a first sole portion, a first leading edge, and a first trailing edge, wherein the first iron-type golf club head includes; i) a first body formed of a first body material and having a first hosel, a first face opening, and a first face support ledge, wherein; (a) the first face support ledge has a first support ledge width separating a first support ledge inner perimeter from a first support ledge outer perimeter, and a first support ledge setback; and (b) the first hosel has a first bore and a first bore center that defines a first shaft axis which intersects with a horizontal ground plane to define a first origin point; ii) a first face formed of a first face material that is different from the first body material and configured to be rigidly supported by the first body face opening having a first face perimeter, a first face thickness, a first face striking surface, and a first face rear surface, wherein; (a) a portion of the first face rear surface contacts the first face support ledge thereby defining a first supported face portion having a first supported face area; and (b) a portion of the first face rear surface does not contact the first face support ledge thereby defining a first unsupported face portion having a first unsupported face area, wherein the sum of the first supported face area and the first unsupported face area is a first total face area; iii) wherein the first iron-type golf club head has a first center of gravity located; (a) vertically toward the first top line portion of the first iron-type golf club head from the first origin point a first distance Ycg; (b) horizontally from the first origin point toward the first toe portion of the first iron-type golf club head a first distance Xcg; (c) a first distance Zcg from the first origin toward the first trailing edge in a direction generally orthogonal to the vertical direction used to measure the first Ycg distance and generally orthogonal to the horizontal direction used to measure the first Xcg distance; and (d) wherein the first iron-type golf club head has a first opening/closing moment of inertia about a first vertical axis through the first center of gravity; B) a second iron-type golf club head having a second loft of at least 31 degrees, a second heel portion, a second toe portion, a second top line portion, a second sole portion, a second leading edge, and a second trailing edge, wherein the second iron-type golf club head includes; i) a second body formed of a second body material and having a second hosel, a second face opening, and a second face support ledge, wherein; (a) the second face support ledge has a second support ledge width separating a second support ledge inner perimeter from a second support ledge outer perimeter, and a second support ledge setback; and (b) the second hosel has a second bore and a second bore center that defines a second shaft axis which intersects with the horizontal ground plane to define a second origin point; ii) a second face formed of a second face material that is different from the second body material and configured to be rigidly supported by the second body face opening having a second face perimeter, a second face thickness, a second face striking surface, and a second face rear surface, wherein; (a) a portion of the second face rear surface contacts the second face support ledge thereby defining a second supported face portion having a second supported face area; and (b) a portion of the second face rear surface does not contact the second face support ledge thereby defining a second unsupported face portion having a second unsupported face area, wherein the sum of the second supported face area and the second unsupported face area is a second total face area; iii) wherein the second iron-type golf club head has a second center of gravity located; (a) vertically toward the second top line portion of the second iron-type golf club head from the second origin point a second distance Ycg; (b) horizontally from the second origin point toward the second toe portion of the second iron-type golf club head a second distance Xcg; (c) a second distance Zcg from the second origin toward the second trailing edge in a direction generally orthogonal to the vertical direction used to measure the second Ycg distance and generally orthogonal to the horizontal direction used to measure the second Xcg distance; and (d) wherein the second iron-type golf club head has a second opening/closing moment of inertia about a second vertical axis through the second center of gravity; and C) wherein the first unsupported face area is at least 70% of the first total face area, and the second unsupported face area is between approximate 20% and approximately 50% of the second total face area. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification