US 6,015,354 · Granted 2000-01-18
The Adjustable Golf Club Patent That Lets You Dial In Your Perfect Swing
Imagine a golf club where you can move weights around inside the head to shift where the club feels heaviest—closer to the toe, heel, or top. This patent lets golfers tweak their clubs' balance and weight to match their own swing style, potentially hitting straighter and farther without buying a whole new set.
The plain-English version
What it protects
The claim covers a golf club head (in irons, woods, and putters) that has built-in pockets or slots where removable or adjustable weights can be repositioned. What's protected here is the specific mechanical design that allows a golfer to change the total weight of the club, shift its center of gravity, and alter its balance point by moving these weights around—all without replacing the entire club.
Why it matters
This patent captures a major trend in golf equipment customization. Rather than forcing golfers to buy multiple club models to find the right feel, this design lets one club adapt to different swing styles and body types. For manufacturers, it's a way to sell fewer clubs while offering more personalization; for golfers, it means potentially lower costs and better performance tuning without a pro fitting or a new purchase.
Real-world use
A golfer struggling with a slice could add weight to the heel of their driver to encourage a straighter shot, or redistribute weight in their putter to improve feel on short greens—all by opening the club head and adjusting internal weights rather than buying new clubs.
Original USPTO abstract
Improved golf club heads including irons, woods and putters have built-in provisions to change the weight of the golf club head including a way to increase, decrease or adjust the position and the amount of weights in a selected golf club head so as to enable the player to adjust the club's center of gravity, total club weight, and balance of the club and to tailor the club to compensate for an individual's style of swing, physical characteristics and skill level as a way of improving the golfer's accuracy and the distance of his shots.
Patent details
- Publication number
- US 6,015,354
- Filing date
- 1998-03-05
- Grant date
- 2000-01-18
- Assignee
- Ahn; Stephen C. / Lee; Suh Yong
- Inventor(s)
- AHN; STEPHEN C., LEE; SUH YONG
- CPC class
- A63B53/04
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