# US 11,439,876 B1 · Golf club head

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- Number: US 11,439,876 B1
- Document ID: US11439876B1
- Status: Granted
- Kind: B1
- Application number: 17/490,814
- Filed: 2021-09-30
- Granted: 2022-09-13
- Earliest claimed: 2021-05-05
- Assignees: Advanced International Multitech Co., Ltd.
- Applicants: Advanced International Multitech Co., Ltd.
- Inventors: Akinori Sasamoto; Ming Fu Su; Chun-Hao Huang
- Web page: https://patentgrep.com/patent/US11439876B1

## CPC

- A63B 53/0437: {with special crown configurations}
- A63B 53/0466: {wood-type}
- A63B 2209/02: with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A golf club head includes a club head main body and a crown. The club head main body includes a main portion, and a receiving portion connected to the main portion. The main portion has an outer shell surface, and an upright side wall surface interconnecting the outer shell surface and the receiving portion. The crown includes a covering portion, and a protrusion protruding upwardly from an outer periphery of the covering portion, adjoining the side wall surface, and having a to-be-ground surface flushing with the outer shell surface. A height difference between the protrusion and the covering portion prevents the covering portion from being ground.

## Claims

### Claim 1

A golf club head, comprising:
a club head main body including a main portion defining an inner space therein, and a receiving portion connected to said main portion, said main portion having an outer shell surface facing upwardly, and an upright side wall surface interconnecting said outer shell surface of said main portion and said receiving portion, said receiving portion having a covered surface connected to said side wall surface and facing upwardly, said side wall surface and said covered surface cooperating with each other to define a receiving slot; and
a crown disposed fixedly in said receiving slot, enclosing said inner space, and being made of a composite material, said crown including a covering portion that is attached to and disposed on said covered surface, and a protrusion that protrudes upwardly from an outer periphery of said covering portion to form a stepped structure, that adjoins said side wall surface, and that has a to-be-ground surface facing upwardly and flushing with said outer shell surface of said main portion.

### Claim 2 (depends on 1)

The golf club head as claimed in claim 1, wherein said crown is made of one of carbon fiber reinforced polymer and carbon fiber reinforced thermoplastic.

### Claim 3 (depends on 1)

The golf club head as claimed in claim 1, wherein a thickness of said crown ranges from 0.4 mm to 0.8 mm.

### Claim 4 (depends on 1)

The golf club head as claimed in claim 1, wherein a height difference between said covering portion and said to-be-ground surface of said protrusion ranges from 0.05 mm to 6.0 mm.

### Claim 5 (depends on 1)

The golf club head as claimed in claim 1, wherein a width of said to-be-ground surface of said protrusion ranges from 0.1 mm to 20.0 mm.

### Claim 6 (depends on 1)

The golf club head as claimed in claim 1, wherein said to-be-ground surface of said protrusion is a curved surface connected to said outer shell surface of said main portion.

### Claim 7 (depends on 1)

The golf club head as claimed in claim 1, wherein said to-be-ground surface of said protrusion is a looped surface.

### Claim 8 (depends on 1)

The golf club head as claimed in claim 1, wherein said receiving portion of the club head main body is adhered to and fixed to said covering portion of said crown.