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US 2015/0306471 A1Published application
Multi-material aerodynamic golf club head
AssigneeTaylor Made Golf Company, Inc.
InventorsJeffrey J. Albertsen, Michael Scott Burnett
Life of this patent
Estimating the term…
Abstract
A multi-material aerodynamic golf club head producing reduced aerodynamic drag forces via the curvature of a crown section. At least a portion of the crown section may be composed of low density materials, including nonmetallic materials.
Claims26
An aerodynamic golf club head (100) comprising:
- A) a hollow body (110) having a club head volume of at least 400 cc, a face (200), a sole section (300), a crown section (400), a front (112), a back (114), a heel (116), and a toe (118);
- B) the face (200) having a top edge (210) and a lower edge (220), wherein a top edge height (TEH) is the elevation of the top edge (210) above the ground plane (GP), and a maximum top edge height (TEH) is at least 2 inches;
- and
- C) the crown section (400) having a crown apex (410) located an apex height (AH) above a ground plane (GP) and having an apex ratio of the apex height (AH) to the maximum top edge height (TEH) of at least 1.13, wherein:
- (i) within a front-to-back vertical section through the crown apex (410) and perpendicular to a vertical plane created by a shaft axis (SA), a portion of the crown section (400) between the crown apex (410) and the face (200) has an apex-to-front radius of curvature (Ra-f), and a portion of the crown section (400) between the crown apex (410) and the back (114) of the hollow body (110) has an apex-to-rear radius of curvature (Ra-r),
- (ii) within a heel-to-toe vertical section through the crown apex (410) and parallel to the vertical plane created by the shaft axis (SA), a portion of the crown section (400) above the top edge height (TEH) has a heel-to-toe radius of curvature (Rh-t);
- and
- (iii) a portion of the crown section (400) has a density less than a portion of the sole section (300), and the crown section (400) has at least one of (a) the apex-to-front radius of curvature (Ra-f) in contact with the crown apex (410) of less than 3 inches, (b) a portion of the crown section (400) above the top edge height (TEH) with an apex-to-rear radius of curvature (Ra-r) that is less than 3.75 inches, and (c) an apex-to-rear radius of curvature (Ra-r) that is greater than 5 inches.
5 more elements
An aerodynamic golf club head (100) comprising:
- A) a hollow body (110) having a club head volume of at least 400 cc, a face (200), a sole section (300), a crown section (400), a front (112), a back (114), a heel (116), and a toe (118), wherein majority of the crown section (400) is composed of nonmetallic material having a density less than a portion of the sole section (300);
- B) the face (200) having a top edge (210) and a lower edge (220), wherein a top edge height (TEH) is the elevation of the top edge (210) above the ground plane (GP), and a lower edge height (LEH) is the elevation of the lower edge (220) above the ground plane (GP), wherein a maximum top edge height (TEH) is at least 2 inches;
- and
- C) the crown section (400) having a crown apex (410) located an apex height (AH) above a ground plane (GP), wherein within a front-to-back vertical section through the crown apex (410) and perpendicular to a vertical plane created by a shaft axis (SA), a portion of the crown section (400) between the crown apex (410) and the face (200) has an apex-to-front radius of curvature (Ra-f) and a portion of the crown section (400) between the crown apex (410) and the back (114) of the hollow body (110) has an apex-to-rear radius of curvature (Ra-r), and wherein the apex-to-front radius of curvature (Ra-f) in contact with the crown apex (410) is at least 25% less than a portion of the apex-to-rear radius of curvature (Ra-r).
1 more element
Dependencies are inferred from the claim text.