Equipment
Latest patent filings: Sound-tuning, sound-analysis and adjustable irons
It’s been a few months since we took a peek at the technologies major OEMs are working on. In an ever-increasingly competitive space amid an industry in contraction, OEMs seem to be digging deeper and going bolder to attract consumers (Callaway’s driver with a spoiler from the July edition of this series comes to mind here).
In a survey of what’s recently been made available for public consumption, that trend continues.
Let’s take a look at how our friends in Fairhaven, Carlsbad, Fort Worth and Phoenix are pushing the envelope.
TaylorMade: Multi-layer face insert

TaylorMade is working on a driver with a multi-layer face insert that includes the prepreg plies technology we discussed in a previous installment in this series. The filing also makes mention of an “undercut fill structure,” which “can include at least three ribs equidistantly spaced from each other.”
TaylorMade: Contrast-enhanced club heads

TMag is also looking at “contrast enhanced” crowns. As the company’s filing states, “new approaches that permit more accurate and repeatable alignment are needed.” The filing also makes clear that the both black and white crowns are being developed.
Callaway: Adjustable iron-type golf club head

Callaway is exploring a highly adjustable iron head. As you can see from the image above, multiple sections can be adjusted. The filing refers to “features that allow for the adjustment of the principal moment of inertia angle and/or turf interaction, including an adjustable weight cartridge or an adjustable sole plate and a lightweight face.”
Callaway: Multi-material putter

The Carlsbad-based company is also working on a “multiple material putter having a high moment of inertia and a low center of gravity,” according to another filing.
The filing further states: “Most putters are constructed in such a way that the head is made from a single type of parent material, such as steel. There is a need for putters that have increased moments of inertia and low centers of gravity.”
Titleist: A workable and forgiving iron

Moving on to Titleist’s R&D efforts: The company is continuing to work on cavity-backed players irons that offer more forgiveness and more workability at the same time. A lengthy paragraph from the filing lays this out in detail.
Previous game improvement club heads have relatively higher MOI-Y, at the expense of a higher MOI-SA because they are relatively large. Generally, better players have a tendency to prefer golf clubs having a lower MOI-SA so that they can control the orientation of the club head throughout the swing with greater ease….There remains a need in the art for an improved iron-type golf club. In particular, there is a need for an iron-type golf club that provides a lower MOI-SA in combination with a higher MOI-Y.
Titleist: Optimizing club heads for sound
Titleist is also working on a driver that’s sound is “is aesthetically pleasing when the golf club head impacts the golf ball.” The filing indicates that today’s large, flat driver typically produce lower frequency sounds, which golfers, according to Titleist, don’t like.
Ping: Tuneable everything

The denizens of Phoenix are toying with irons with multiple adjustable weights, as a recent filing makes mention of. The filing further suggests that loft can be tinkered with.
Nike: Actually analyzing impact through sound
If you remember the “microwavable golf ball” Nike applied for a patent that we mentioned a few months ago, then this might not surprise you: Nike is working on technology to analyze impact sound to “determine one or more characteristics of the impact, and generating an output based on the determined impact characteristic.”
What does that mean? A few paragraphs in the filing sheds a little light on what Nike’s up to:
“The amplitudes and frequencies of the audio signal may be analyzed to determine various characteristics such as a magnitude of compression of the golf ball, an impact location on the surface and/or a speed with which the surface impacts the golf ball.
“The determined characteristics may be used, in some arrangements, to determine a golf ball impact location on the surface of the golf club head. Alternatively or additionally, the characteristics may be used to identify a type of golf ball best suited for a particular user (and/or, e.g., golf club head speed). In yet other arrangements, the determined characteristics, such as golf ball compression, may be used to insure the quality of a golf ball.
“According to other aspects, a mobile communication device may be configured to detect golf ball impact sounds and to determine the various impact characteristics. In one example, a mobile communication device may record the sound of a golf ball impact and to visually indicate the golf ball impact location against a golf club head.”
Equipment
Interesting clubs at top of bag – GolfWRXers discuss
In our forums, users are talking about top of bag setups that are non-traditional or thought-provoking in some way. Original poster @SuperSpurs106 inquired about other members who might use unorthodox set-ups to help with gapping issues or weak spots.
They wrote:
“I currently have a PING G430 driver, TM Qi35 3W and a TM Qi4D 7W. Driver and 7W are fine but can’t get on with my 3W and have always struggling with this club over the years. Thinking of adding a 2H which I know would look odd. Just wondering if anyone else had a weird set up at the top of their bag?”
Our members in the forum have offered up their thoughts and personal experiences with non-traditional top of bag set-ups, and their reasoning for thinking outside of the box to begin with. Here are a few posts from the thread, but make sure to check out the entire discussion and have your say at the link below.
- BowMain42: “Don’t worry about what “looks” odd. If the club does what you need it to do, it’s the right club.”
- scooterhd2: “I cant hit 3 woods either. Thats why I roll with a unicorn XL Hibore 2 wood. 400 cc head at 16 degrees of loft and its just a monster 3 wood off the tee. Off the deck, we are playing the f6 baffler. 5 wood at 41.75 inches and its easy to control.”
- phizzy30: “I had driver, 3 metal, 2/4 hybrid once upon a time as a higher ss player. 4 hybrid is gone and in place is a driving iron nowadays. I don’t think what you’re proposing is weird in anyway, however the yardage gap might be glaringly huge between driver and 2 hybrid. What is it about your 3 metal that has got you all messed up? You could always go 4 metal with shorter shaft and see if that works.”
Entire Thread: “Interesting clubs at top of bag”
If you aren’t a member, join us in the GolfWRX forums today!
Equipment
Members of the Mini Driver Club – GolfWRXers discuss
In our forums, one user has gone searching for fellow users of a mini driver. In a post, @TightFade asked for other mini driver users to chime in with their weapon of choice, the reason for employing a mini, and what club follows it in the bag.
@TightFade asked:
“What mini are you playing? What spot in the bag did it take over? What’s the next club after it? For me: Elyte mini 13.5. Replacing 3w. Next up club looks like it’ll be 5w.”
Our members in the forum have been sharing their own bag setups featuring the mini driver, and the various reasons they purchased one in the first place. Here are a few posts from the thread, but make sure to check out the entire discussion and have your say at the link below.
- RCGA: “Ping G430 Max 12* ‘Thriver.’ Next club is a 4w and 2i (I play a weird course).”
- JMB3: “R7 at 12.75 with Diamana BB 63s. 3w replacement. Next Club: Elyte Ti 5w at 17*.”
- ColdOkieGolf: “R7 15.5 turned down to 13.5 It replaces the 3w. I found it surprisingly easy to hit off the deck, and it’s very rare that I need or want to hit something beyond 250 from the fairway, so next club is my 7w.”
- ChaosTheory: “I’m sub-90 MPH with driver. But I’m able to hit DOD. I have been wanting something like the R7 15.5, so I just ordered one. I have a spot in the bag so nothing has to go. But I could see it replacing my trusty 4 wood, which I never use for approach shots. Just tee shots and lay ups. If I drop the 4 wood, I will turn my 7 wood down to ~20 degrees and will have good gaps. I recently tried a thriver build: 12 degree driver turned to 14, with a heavier 44 inch shaft and added head weight. I hit it great. Very accurate and not overly high, but the problem was that it sometimes went as far as a typical drive. And that’s not what I needed. So I will probably turn the 15.5 up to 16.5 or even 17.5. It’s all theoretical at this point. ?”
Entire Thread: “Members of the Mini Driver Club…Check In.”
If you aren’t a member, join us in the GolfWRX forums today!
Whats in the Bag
Chris Gotterup WITB 2026 (June)
- Chris Gotterup had >14 clubs in his bag when photographed prior to the Memorial Tournament.
Drivers: TaylorMade Qi4D (8 degrees), Ping G440 LST (9 degrees @8), Ping G440 LST (7.5 degrees)
Shafts: Project X HZRDUS Smoke Grey 6.5 TX 70 g, Project X HZRDUS T1100 Handcrafted 6.5 TX 70 g, Project X HZRDUS Smoke Grey 6.5 TX 70 g


Mini driver: TaylorMade BRNR (13.5 degrees)
Shaft: Project X HZRDUS Black TX 80 g

5-wood: TaylorMade Qi4D (18 degrees)
Shaft: Mitsubishi Chemical Diamana WB Wood Shaft 83 TX

7-wood: TaylorMade Qi4D (21 degrees)
Shaft: Mitsubishi Diamana WB Wood Shaft 83 TX

Irons: TaylorMade P770 (3), Bridgestone Tour B 220 MB (4-9)
Shafts: KBS C-Taper 130 X


Wedges: TaylorMade MG5 (46, 52, 56, 60)
Shafts: KBS C-Taper 130 X, True Temper Dynamic Gold Tour Issue X100

Putter: TaylorMade Spider X Tour
Grip: SuperStroke Zenergy Pistol 2.0

Grips: Golf Pride Z Grip Cord
Ball: Bridgestone Tour B X Mindset
Check out more in-hand photos of Chris Gotterup’s clubs here.
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Joe Golfer
Oct 16, 2014 at 1:13 am
Ralph Maltby of Golfworks has been selling irons for quite some time that have adjustable weights in the heel and toe.
I think their latest is the Maltby KE4 iron head, which can be seen at the Golfworks site.
I’m not advocating it, as I don’t know anyone who has ever tried one.
I’m just saying that adjustable irons in this weighting respect have existed already for many years now.
Archie Bunker
Oct 14, 2014 at 4:26 pm
These patents are technically worthless, and only provide marketing direction to sell more product. I can only imagine the absurd claims that will be made for these “breakthroughs” in the future.
nikkyd
Oct 12, 2014 at 8:39 pm
I like the adjustable bounce on the callys. I was just thinking that the other day. Why couldnt a guy weld a flange on the sole of an old set of blades ? Callaway has done it. Bravo.
BigBoy
Oct 12, 2014 at 6:31 pm
the sheer stupidity of manufacturers today, it knows no bounds to that stupidity.
Tom
Oct 12, 2014 at 11:50 am
From the looks of the design concepts, it would appear that there is more on the clubs that can break or fall off.
Jay
Oct 12, 2014 at 10:47 am
Adjustable irons are ridiculous. Get fit for length,loft and lie and call it good. More does not equal better.
Tom
Oct 12, 2014 at 11:48 am
Amen brother…..amen.
moses
Oct 11, 2014 at 8:18 pm
Hmmm. If only the USGA would let us have COR .860 it would save the golf equipment industry for the next 10 years.
No
Oct 12, 2014 at 2:50 am
No, it wouldn’t. It would make it worse.
Joe Golfer
Oct 16, 2014 at 1:08 am
@No
the comment by @Moses was meant to be sarcastic.
Shelton Cooper
Oct 11, 2014 at 7:38 pm
So Nike will just be using the Mizuno harmonic impact technology then. Does Mizuno not have a patent on that already?
Josh
Oct 11, 2014 at 7:52 pm
That is different. Mizuno’s tech is about making the feel and sound good to the player. Nike’s idea is about actually determining where the ball hit on the club face or how much compression a player got from the ball. From what it reads it sounds like it will be an app based on sound. So instead of using impact tape or a high speed camera to determine where the ball hit on the face, the app will determine it based on the impact sound.
RAT
Oct 11, 2014 at 9:23 pm
I can do this myself. I can tell by sound and feel that it was a good strike or not.
MHendon
Oct 11, 2014 at 9:49 pm
Patents have become a joke and are virtually worthless.
1badbadger
Oct 18, 2014 at 4:18 am
I think some of these IDEAS are a joke, but patents can be very valuable. Golf equipment companies will aggressively protect their intellectual property, and if a competitor infringes on another manufacturer’s patents the settlements can be in the hundreds of millions of dollars.