# US 11,992,739 B1 · Apparatus and method for measuring lie and loft of a golf club

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,992,739 B1
- Document ID: US11992739B1
- Status: Granted
- Kind: B1
- Application number: 18/242,750
- Filed: 2023-09-06
- Granted: 2024-05-28
- Earliest claimed: 2021-03-02
- Assignees: Topgolf Callaway Brands Corp.
- Applicants: Topgolf Callaway Brands Corp.
- Inventors: Alex Power; Dan Marin
- Web page: https://patentgrep.com/patent/US11992739B1

## CPC

- A63B 60/42: Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand
- G01B 5/0023: {Measuring of sport goods, e.g. bowling accessories, golfclubs, game balls}
- G06T 7/73: using feature-based methods
- A63B 53/02: Joint structures between the head and the shaft
- G01B 11/26: for measuring angles or tapers; for testing the alignment of axes
- G06T 2207/30221: Sports video; Sports image
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)
- G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

An apparatus for precisely and accurately measuring the loft and lie of a golf club, and a method of using such apparatus, is disclosed herein. The apparatus includes a clamp assembly powered by a pressure unit to immobilize the head of a golf club, a scoreline measurement unit to capture scoreline angle information, loft and lie measurement arrays that can be moved along horizontal y and x axes to capture loft and lie angle information of the golf club shaft, and a computer with an algorithm that uses information captured by the scoreline measurement unit and loft and lie measurement arrays to calculate final loft and lie angle values that are accurate within +/−0.125°.

## Claims

### Claim 1

A method of measuring a loft angle and lie angle of a golf club having a head and a shaft, the method comprising:
clamping the head within a measurement apparatus;
centering the shaft within a sensor display of the measurement apparatus;
calculating an angle of scorelines on a face with one or more scoreline sensors, lights, and lenses;
calculating preliminary loft and lie angles of the shaft with one or more loft and lie lenses, loft and lie lights, and loft and lie sensors;
algorithmically calculating final loft and lie angles of the golf club using the scoreline angle and preliminary loft and lie angles;
increasing a pressure within a tank of the measurement apparatus;
increasing a pressure on the golf club head within a clamping apparatus using the increased pressure; and
bending the club.

### Claim 2 (depends on 1)

The method of claim 1 wherein the pressure is selected from the group consisting of hydraulic and pneumatic.

### Claim 3 (depends on 1)

The method of claim 1 further comprising displaying the final loft and lie angles on a graphical user interface associated with the computer.