# US 2019/0168084 A1 · Method of finishing exterior surface of golf club head

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- Number: US 2019/0168084 A1
- Document ID: US20190168084A1
- Status: Published application
- Kind: A1
- Application number: 15/952,954
- Filed: 2018-04-13
- Published: 2019-06-06
- Earliest claimed: 2017-12-05
- Assignees: Dunlop Sports Co. Ltd.
- Applicants: Dunlop Sports Co. Ltd.
- Inventors: Phillip C. SEAGRAM; Mika BECKTOR; Keith DOLEZEL
- Web page: https://patentgrep.com/patent/US20190168084A1

## CPC

- A63B 53/047: {iron-type}
- A63B 60/00: Details or accessories of golf clubs, bats, rackets or the like
- B24B 19/26: for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers or magnetic recording heads (grinding of spherical surfaces in general B24B11/00, of optical surfaces on lenses or surfaces of similar shape on other work B24B13/00)
- B24C 1/08: for polishing surfaces, e.g. {smoothing a surface} by making use of liquid-borne abrasives
- C23C 24/04: Impact or kinetic deposition of particles
- A63B 53/0412: {Volume}
- A63B 53/0445: {Details of grooves or the like on the impact surface}
- A63B 53/0475: {with one or more enclosed cavities}
- A63B 60/48: with corrugated cross-section
- A63B 60/50: with through-holes (A63B60/18 takes precedence; for stringing purposes A63B49/00)
- A63B 2053/0479: {Wedge-type clubs, details thereof}
- A63B 2053/0491: {with added weights, e.g. changeable, replaceable}
- A63B 2102/32: Golf
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24C: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)

## Abstract

A method of finishing an exterior surface of a golf club head includes providing a golf club head having an exterior surface that includes a first surface region, a second surface region, and a third surface region. The method further includes steps of applying a first surface finish to at least the third surface region, applying a first masking to at least the first and third surface regions, applying a second surface finish to the second surface region, removing the first masking, applying a second masking to at least the second and third surface regions, applying a third surface finish to the first surface region, and removing the second masking.

## Claims

### Claim 1

A method of finishing an exterior surface of a golf club head, the method comprising the steps of:
(a) providing a golf club head having an exterior surface that includes a first surface region, a second surface region, and a third surface region, wherein the third surface region is at least partially located between the first and second surface regions, and the first, second, and third surface regions are mutually exclusive of each other and, in combination, form a contiguous portion of the exterior surface;
(b) applying a first surface finish to at least the third surface region of the exterior surface of the golf club head;
(c) applying a first masking to at least the first and third surface regions of the exterior surface of the golf club head;
(d) applying a second surface finish to the second surface region of the exterior surface of the golf club head;
(e) removing the first masking;
(f) applying a second masking to at least the second and third surface regions of the exterior surface of the golf club head;
(g) applying a third surface finish to the first surface region of the exterior surface of the golf club head; and
(h) removing the second masking,
wherein the first, second, and third surface finishes are each different from each other.

### Claim 2 (depends on 1)

The method of claim 1, wherein the step (b) of applying a first surface finish further comprises surface polishing, resulting in a highly reflective appearance.

### Claim 3 (depends on 1)

The method of claim 1, wherein the step (d) of applying a second surface finish further comprises surface roughening resulting in a semi-gloss appearance.

### Claim 4 (depends on 3)

The method of claim 3, wherein the step (d) of applying a second surface finish further comprises media blasting.

### Claim 5 (depends on 1)

The method of claim 1, wherein the step (g) of applying a third surface finish further comprises surface roughening resulting in a matte appearance.

### Claim 6 (depends on 5)

The method of claim 5, wherein the step (g) of applying a third surface finish further comprises abrading using a brush wheel.

### Claim 7 (depends on 1)

The method of claim 1, wherein the step (c) of applying a first masking further comprises, using a flexible tape having a first side edge, a second side edge, and a substantially constant width measured between the first and second side edges, aligning at least one of the first and second side edges of the flexible tape with a boundary formed between the third surface region and the second surface region.

### Claim 8 (depends on 7)

The method of claim 7, wherein the boundary follows an arcuate path.

### Claim 9 (depends on 7)

The method of claim 7, wherein the third surface region comprises a concave surface portion.

### Claim 10 (depends on 1)

The method of claim 1, wherein the second region is circumscribed, in its entirety, by the third region.

### Claim 11

A method of finishing an exterior surface of a sports apparatus, the method comprising the steps of:
(a) providing a sports apparatus having an exterior surface that includes a first surface region, a second surface region, and a third surface region, wherein the third surface region is at least partially located between the first and second regions, and the first, second, and third surface regions are mutually exclusive of each other and, in combination, form a contiguous portion of the exterior surface;
(b) polishing a portion of the exterior surface including the third surface region, resulting in a reflective appearance;
(c) applying a first masking to at least the first and third surface regions of the exterior surface;
(d) media blasting the second surface region of the exterior surface, resulting in a semi-gloss appearance;
(e) removing the first masking;
(f) applying a second masking to at least the second and third surface regions of the exterior surface;
(g) roughening the first surface region of the exterior surface of the sports apparatus, resulting in a matte appearance; and
(h) removing the second masking,
wherein the first, second, and third surface finishes are each different from each other.

### Claim 12 (depends on 11)

The method of claim 11, wherein the sports apparatus comprises a golf club head.

### Claim 13 (depends on 12)

The method of claim 12, wherein:
the golf club head comprises a striking face, a rear surface having an upper portion and a lower portion, a top surface, and a bottom surface;
the first surface region corresponds with the bottom surface;
the second surface portion corresponds with the upper portion of the rear surface; and
the third surface portion corresponds with the lower portion of the rear surface.

### Claim 14 (depends on 12)

The method of claim 12, wherein the golf club head is a wedge-type golf club head.

### Claim 15 (depends on 11)

The method of claim 11, wherein the step (g) of roughening the first surface region further comprises media blasting the first surface region using an aluminum oxide media.

### Claim 16 (depends on 11)

The method of claim 11, wherein the step (g) of roughening the first surface region further comprises abrading the first surface region using a brush wheel.

### Claim 17 (depends on 11)

The method of claim 11, wherein the step (c) of applying a first masking further comprises, using a flexible tape having a first side edge, a second side edge, and a substantially constant width measured between the first and second side edges, aligning at least one of the first and second side edges of the flexible tape with a boundary formed between the third surface region and the second surface region.

### Claim 18 (depends on 17)

The method of claim 17, wherein the boundary follows an arcuate path.

### Claim 19 (depends on 17)

The method of claim 17, wherein the third surface region comprises a concave surface portion.

### Claim 20 (depends on 11)

The method of claim 11, wherein the second region is circumscribed, in its entirety, by the third region.