IP Library Granted Patent US 8,568,247
Granted Patent B1
US 8,568,247 · App. 13/215,796 · Granted Oct 29, 2013

Golf club head with improved aerodynamic characteristics

Inventor: Steven M. Ehlers (Poway, CA)
Assignee: Callaway Golf Company
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Quick Facts
Patent No.
US 8,568,247
App. No.
13/215,796
Granted
Oct 29, 2013
Kind
B1
Abstract

A golf club head comprising an aerodynamic hosel is disclosed herein. In one embodiment, the hosel may have an airfoil cross-section with a high thickness to chord ratio. In a further embodiment, the thickness to chord ratio may increase from a hosel head connection point to a hosel shaft connection point. In another embodiment, a shaft connection point of the hosel is closer to a club face vertical plane than to a head connection point vertical plane, e.g., is swept. In yet another embodiment, the hosel has an endplate proximate a shaft connection point. In yet another embodiment, the exterior surface of the hosel is rough, comprises at least one vertex generator, comprises a fillet, or comprises at least one trip step.

Claims (67)

1. A golf club head comprising:

a face component, a crown, and a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has an aerodynamic hosel portion,

wherein the aerodynamic hosel portion has a vertical length of between 0.25 and 1.5 inches,

wherein the aerodynamic hosel portion has a thickness and a chord,

wherein the aerodynamic hosel portion has a high thickness to chord ratio,

wherein the aerodynamic hosel portion is an airfoil, and

wherein the airfoil has a Reynolds Number that is less than or equal to 100,000.

2. The golf club head of claim 1 , wherein the airfoil has a Reynolds Number that is less than or equal to 70,000.

3. The golf club head of claim 1 , wherein the airfoil is symmetric.

4. The golf club head of claim 1 , wherein the airfoil is cambered.

5. The golf club head of claim 1 , wherein the airfoil has at least one slot.

6. A golf club head comprising:

a face component, a crown, a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has an aerodynamic hosel portion,

wherein the aerodynamic hosel portion has a vertical length of between 0.25 and 1.5 inches,

wherein the aerodynamic hosel portion has a thickness and a chord,

wherein the aerodynamic hosel portion has a high thickness to chord ratio,

wherein the aerodynamic hosel portion is an airfoil, and

wherein the airfoil has two slots.

7. A golf club head comprising:

a face component, a crown, and a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has an aerodynamic hosel portion,

wherein the aerodynamic hosel portion has a vertical length of between 0.25 and 1.5 inches,

wherein the aerodynamic hosel portion has a thickness and a chord,

wherein the aerodynamic hosel portion has a high thickness to chord ratio,

wherein the aerodynamic hosel portion is an airfoil, and

wherein the airfoil has a truncated trailing end.

8. A golf club head comprising:

a face component, a crown, and a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has an aerodynamic hosel portion,

wherein the aerodynamic hosel portion has a vertical length of between 0.25 and 1.5 inches,

wherein the aerodynamic hosel portion has a thickness and a chord,

wherein the aerodynamic hosel portion has a high thickness to chord ratio, and

wherein an endplate is connected to the shaft connection point.

9. The golf club head of claim 8 , wherein the endplate is planar.

10. The golf club head of claim 8 , wherein the endplate is non-planar.

11. A golf club head comprising

a face component, a crown, and a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has a vertical length of between 0.25 and 1.5 inches,

wherein the hosel has at least one thickness and at least one chord length

wherein the hosel has a variable thickness to chord ratio, and

wherein the thickness to chord ratio increases from the head connection point to the shaft connection point.

12. A golf club head comprising

a face component, a crown, and a sole; and

an airfoil-shaped hosel having a shaft connection point and a head connection point;

wherein the hosel has a vertical length of between 0.25 and 1.5 inches,

wherein the hosel has at least one thickness and at least one chord length, and

wherein the chord length remains constant from the head connection point to the shaft connection point of the hosel.

13. A golf club head comprising

a face component, a crown, and a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has a vertical length of between 0.25 and 1.5 inches,

wherein the hosel has at least one thickness and at least one chord length, and

wherein the chord length increases from the head connection point to the shaft connection point of the hosel.

14. A golf club head comprising

a face component, a crown, and a sole; and

a hosel having a shaft connection point and a head connection point;

wherein the hosel has a vertical length of between 0.25 and 1.5 inches,

wherein the face component has a vertical plane and the head connection point has a vertical plane,

wherein the shaft connection point of the hosel is closer to the face component vertical plane than the head connection point vertical plane, and

wherein the hosel is staggered.

Assignments (8)
RELEASE OF SECURITY INTEREST AT REEL/FRAME 063665/0176 Recorded Jun 1, 2026
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: CALLAWAY GOLF COMPANY (F/K/A TOPGOLF CALLAWAY BRANDS CORP.); TRAVISMATHEW, LLC; OGIO INTERNATIONAL, INC.; WORLD GOLF TOUR, LLC
Reel/Frame 075834/0150 →
SECURITY INTEREST Recorded May 17, 2023
From: TOPGOLF CALLAWAY BRANDS CORP.; OGIO INTERNATIONAL, INC.; TOPGOLF INTERNATIONAL, INC.; TRAVISMATHEW, LLC; WORLD GOLF TOUR, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 063692/0009 →
SECURITY AGREEMENT Recorded May 16, 2023
From: TOPGOLF CALLAWAY BRANDS CORP. (FORMERLY CALLAWAY GOLF COMPANY); OGIO INTERNATIONAL, INC.; TOPGOLF INTERNATIONAL, INC.; TRAVISMATHEW, LLC; WORLD GOLF TOUR, LLC
To: BANK OF AMERICA, N.A, AS COLLATERAL AGENT
Reel/Frame 063665/0176 →
RELEASE (REEL 048172 / FRAME 0001) Recorded Mar 17, 2023
From: BANK OF AMERICA, N.A.
To: TOPGOLF CALLAWAY BRANDS CORP. (F/K/A CALLAWAY GOLF COMPANY); OGIO INTERNATIONAL, INC.
Reel/Frame 063622/0187 →
SECURITY INTEREST Recorded Jan 23, 2019
From: CALLAWAY GOLF COMPANY; CALLAWAY GOLF SALES COMPANY; CALLAWAY GOLF BALL OPERATIONS, INC.; OGIO INTERNATIONAL, INC.; CALLAWAY GOLF INTERACTIVE, INC.; CALLAWAY GOLF INTERNATIONAL SALES COMPANY; TRAVISMATHEW, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 048110/0352 →
SECURITY AGREEMENT Recorded Jan 4, 2019
From: CALLAWAY GOLF COMPANY; OGIO INTERNATIONAL, INC.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 048172/0001 →
SECURITY INTEREST Recorded Feb 16, 2018
From: CALLAWAY GOLF COMPANY; CALLAWAY GOLF SALES COMPANY; CALLAWAY GOLF BALL OPERATIONS, INC.; OGIO INTERNATIONAL, INC.; CALLAWAY GOLF INTERACTIVE, INC.; CALLAWAY GOLF INTERNATIONAL SALES COMPANY
To: BANK OF AMERICA, N.A.
Reel/Frame 045350/0741 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2011
From: EHLERS, STEVEN M.
To: CALLAWAY GOLF COMPAMY
Reel/Frame 026793/0251 →
Continuity (1)
Provisional Application 61421724 · Dec 10, 2010