IP Library Granted Patent US 8,066,583
Granted Patent B2
US 8,066,583 · App. 12/189,825 · Granted Nov 29, 2011

Golf club shaft with high balance point and golf club including same

Assignee: Acushnet Company
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Quick Facts
Patent No.
US 8,066,583
App. No.
12/189,825
Granted
Nov 29, 2011
Kind
B2
Abstract

A golf club shaft having a weight distribution such that the balance point percentage is less than or equal to 44.50%. The weight distribution of the shaft allows for an increase in length and/or club head weight of a golf club while having a reduced impact on the swing weight.

Claims (19)

1. A wood-type golf club, comprising:

a club head having a weight greater than 180.0 grams; and

a shaft including an elongate body having a length greater than 44 inches and extending between a tip end and a butt end, wherein a center of gravity of the elongate body is located a distance from the butt end that is less than or equal to 43.75% of the length of the elongate body,

wherein the outer diameter of the tip end is 0.250-0.353 inch.

2. The golf club of claim 1 , wherein the club head has a weight greater than 194.0 grams.

3. The golf club of claim 1 , wherein the elongate body has a weight less than 90.0 grams.

4. The golf club of claim 1 , wherein the outer diameter of the butt end is 0.550-0.900 inch.

5. The golf club of claim 1 , wherein the elongate body has a butt frequency of 200-400 cycles per minute, a tip frequency of 400-1200 cycles per minute and a mid frequency of 150-450 cycles per minute.

6. The golf club of claim 1 , wherein the elongate body has a torque value of 1°-10°.

7. A wood-type golf club, comprising:

a shaft including an elongate body having a length greater than 44 inches and extending between a tip end and a butt end, wherein a center of gravity of the elongate body is located a distance from the butt end that is less than or equal to 43.75% of the length of the elongate body;

a club head coupled to the tip end of the elongate body; and

a grip coupled to the butt end of the elongate body,

wherein the club head and the shaft apply a net moment about a reference point located 14.0 inches from the butt end of the elongate body of 221.7-252.3 in·oz, and

wherein the outer diameter of the tip end is 0.250-0.353 inch.

8. The golf club of claim 7 , wherein the elongate body has a weight less than 90.0 grams.

9. The golf club of claim 7 , wherein the outer diameter of the tip end is 0.320-0.353 inch and the outer diameter of the butt end is 0.550-0.700 inch.

10. The golf club of claim 7 , wherein the elongate body has a butt frequency of 200-400 cycles per minute, a tip frequency of 400-1200 cycles per minute and a mid frequency of 150-450 cycles per minute.

11. The golf club of claim 7 , wherein the elongate body has a torque value of 1°-10°.

Assignments (6)
SECURITY INTEREST Recorded Aug 3, 2022
From: ACUSHNET COMPANY
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 061099/0236 →
ASSIGNMENT OF SECURITY INTEREST IN PATENTS (ASSIGNS 039506-0030) Recorded Aug 3, 2022
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS RESIGNING ADMINISTRATIVE AGENT
To: JPMORGAN CHASE BANK, N.A., AS SUCCESSOR ADMINISTRATIVE AGENT
Reel/Frame 061521/0414 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (027346/0222) Recorded Sep 7, 2016
From: KOREA DEVELOPMENT BANK, NEW YORK BRANCH
To: ACUSHNET COMPANY
Reel/Frame 039939/0181 →
SECURITY INTEREST Recorded Jul 28, 2016
From: ACUSHNET COMPANY
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 039506/0030 →
SECURITY AGREEMENT Recorded Dec 8, 2011
From: ACUSHNET COMPANY
To: KOREA DEVELOPMENT BANK, NEW YORK BRANCH
Reel/Frame 027346/0222 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2008
From: RICE, SCOTT A.; BONE, DONALD S.; BARKSDALE, DUSTIN A.
To: ACUSHNET COMPANY
Reel/Frame 021519/0836 →
Continuity (1)
Related Publication 20100041492A1 · Feb 18, 2010