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US 9,844,708 B2Granted
High loft, low center-of-gravity golf club heads
AssigneeTaylor Made Golf Company, Inc.
InventorsMark Vincent Greaney, Brandon H. Woolley
Life of this patent
Estimating the term…
Abstract
A golf club and golf club head having a high static loft angle, low forward center of gravity, and enhanced z-axis gear effect via a large roll radius and/or tightly controlled moment of inertia about the CG x-axis, Ixx, associated with upward and downward twisting of the club head.
Claims20
A golf club head, comprising:
- a body defining an interior cavity, a sole portion positioned at a bottom portion of the golf club head, a crown portion positioned at a top portion, a forward portion and a rearward portion, and a face positioned at the forward portion of the body, the face having a varying thickness of no greater than 5 mm;
- wherein the body has a volume greater than 250 cm3;
- wherein the face has a static loft angle;
- wherein the golf club head has a center of gravity that is 5-20 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center;
- wherein a projection of the center of gravity is located on the face and at an elevation below the geometric center of the face;
- wherein the golf club head has a Delta 1 value of less than or equal to 25 mm;
- wherein the golf club head has a moment of inertia about a golf club head center-of-gravity x-axis, Ixx, of 150-500 kg-mm2;
- and
- wherein, at a normal address position, the sole portion is inclined at a sole angle of 5-40 degrees relative to a ground plane, such that a lowest point on the sole portion is at or near a rearmost point on the sole portion, and the sole portion slopes upward from the lowest point to a frontmost point on the sole portion.
6 more elements
A golf club head, comprising:
- a club head body having an external surface with a heel portion, a toe portion, a crown, a sole, and a ball striking face having a thickness no greater than 5.0 mm;
- wherein the wherein the body has a volume greater than 250 cm3 and the ball striking face has a static loft angle;
- wherein the ball striking face of the club head body has a geometric center;
- wherein the golf club head has a center of gravity that is 5-20 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center;
- wherein the golf club head has a Delta 1 value of 10-25 mm;
- wherein the golf club head has a moment of inertia about a golf club head center-of-gravity x-axis, Ixx, of 150-500 kg-mm2;
- wherein a first portion of the body located at least partially above the geometric center of the face is formed of a non-metallic material having a non-metallic material density and a first portion thickness;
- wherein a second portion of the body located at least partially below the geometric center of the face is formed of a metallic material having a metallic material density that is at least twice the non-metallic material density;
- and
- wherein, at a normal address position, the sole portion is inclined at a sole angle of 5-40 degrees relative to a ground plane, such that a lowest point on the sole portion is at or near a rearmost point on the sole portion, and the sole portion slopes upward from the lowest point to a frontmost point on the sole portion.
7 more elements
A golf club, comprising:
- a shaft having a grip at one end and a golf club head at the other end;
- the golf club head having a body defining an interior cavity, a sole portion positioned at a bottom portion of the golf club head, a crown portion positioned at a top portion, a forward portion and a rearward portion, and a face positioned at the forward portion of the body, the face having a thickness of no greater than 5 mm;
- wherein the body has a volume greater than 250 cm3;
- wherein the face has a static loft angle;
- wherein the golf club head has a center of gravity that is 5-20 mm below the geometric center of the face of the golf club head as measured along a z-axis of the golf club head having an origin at the geometric center;
- wherein the golf club head has a Delta 1 value of less than or equal to 25 mm;
- and
- wherein the golf club head has a moment of inertia about a golf club head center-of-gravity x-axis, Ixx, of 150-250 kg-mm2;
- wherein the golf club head has a roll radius;
- and
- wherein, at a normal address position, the sole portion is inclined at a sole angle of 5-40 degrees relative to a ground plane, such that a lowest point on the sole portion is at or near a rearmost point on the sole portion, and the sole portion slopes upward from the lowest point to a frontmost point on the sole portion.
8 more elements
Dependencies are inferred from the claim text.