IP Library Granted Patent US 8,496,543
Granted Patent B2
US 8,496,543 · App. 13/668,462 · Granted Jul 30, 2013

Golf club with stable face angle

Inventors: Matt Cackett (San Diego, CA); Alan Hocknell (Carlsbad, CA)
Assignee: Callaway Golf Company
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Quick Facts
Patent No.
US 8,496,543
App. No.
13/668,462
Granted
Jul 30, 2013
Kind
B2
Abstract

A golf club having a golf club head 20 with a keel zone that makes the actual face angle of the golf club appear differently when the golf club is at address. The golf club head 20 has a keel zone that is preferably 0.5 inch wide in the fore- aft direction and 1.0 inch wide in the heel-toe direction, which changes the appearance of the face angle while the golf club is at address.

Claims (23)

1. A wood-type golf club head comprising:

a body having a front portion, a crown portion and a sole portion, the body also having a heel end, a toe end and an aft end, the sole portion having only a single keel point;

a keel zone within the sole located preferentially with respect to the center of gravity, preferably having a width ranging from 0.5 inch to 0.6 inch wide fore-aft and 1.0 inch to 1.1 inch wide heel-toe;

wherein the golf club head has a volume ranging from 200 cc to 600 cc;

wherein the golf club head has a mass ranging from 180 grams to 215 grams.

2. The golf club according to claim 1 wherein the keel zone is located in the fore-aft direction relative to the equilibrium line.

3. The golf club according to claim 1 wherein the keel zone is located in the heel-toe direction by the target lie angle.

4. The wood-type golf club according to claim 1 wherein the center of the keel zone contacts the ground at the target lie angle and the zone is equally dispersed about the contact point in the heel and toe directions.

5. A wood-type golf club comprising:

a golf club head comprising

a body having a front portion, a crown portion and a sole portion, the body also having a heel end, a toe end and an aft end, the sole portion having a single keel point,

a keel zone within the sole located preferentially with respect to the center of gravity, preferably having a width ranging from 0.5 inch to 0.55 inch wide fore-aft and 1.0 inch to 1.05 inch wide heel-toe; and

a shaft connected to the golf club head;

wherein the keel zone is located in the fore-aft direction relative to the equilibrium line and in the toe-heel direction relative to the target lie angle;

wherein the golf club head has a volume ranging from 200 cc to 600 cc;

wherein the golf club head has a mass ranging from 180 grams to 215 grams.

6. The wood-type golf club according to claim 5 wherein the center of the keel zone contacts the ground at the target lie angle and the zone is equally dispersed about the contact point in the heel and toe directions.

7. A wood-type golf club head comprising:

a body having a front portion, a crown portion and a sole portion, the body also having a heel end, a toe end and an aft end, the sole portion having a single keel point; and

a keel zone within the sole located preferentially with respect to the center of gravity, preferably having a width ranging from 0.5 inch to 0.55 inch wide fore-aft and 1.0 inch to 1.05 inch wide heel-toe;

wherein the golf club head has a volume ranging from 200 cc to 600 cc;

wherein the golf club head has a mass ranging from 180 grams to 215 grams.

8. The wood-type golf club head according to claim 7 wherein the keel zone contacts the ground at the target lie angle and the zone is equally dispersed about the contact point in the heel and toe directions.

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 Nov 5, 2012
From: CACKETT, MATTHEW T.; HOCKNELL, ALAN
To: CALLAWAY GOLF COMPANY
Reel/Frame 029239/0001 →
Continuity (3)
Continuation 12692447 · Jan 22, 2010
Provisional Application 61147552 · Jan 27, 2009
Related Publication 20130059677A1 · Mar 7, 2013