Golf club head and manufacturing method for the same
US-2015367199-A1 · Dec 24, 2015 · US
Golf club head with grooves shallower than scorelines and goove pitch and length
US9901789B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9901789-B2 |
| Application number | US-201514792775-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 7, 2015 |
| Priority date | Jul 9, 2014 |
| Publication date | Feb 27, 2018 |
| Grant date | Feb 27, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A golf club head according to this invention is a wood type golf club head including a face portion, a crown portion, and a sole portion. A plurality of grooves are formed in the face portion. The depth of the plurality of grooves is less than 0.025 mm. Each pitch between adjacent grooves of the plurality of grooves ranges from 0.1 mm (inclusive) to 1 mm (inclusive).
First claim
Opening claim text (preview).
What is claimed is: 1. A wood type golf club head including a face portion, a crown portion, and a sole portion, wherein a plurality of scorelines are formed in the face portion, a plurality of grooves having a depth shallower than a depth of the plurality of scorelines are formed in the face portion, the depth of the plurality of grooves is less than 0.025 mm, each pitch between adjacent grooves of the plurality of grooves ranges from 0.1 mm (inclusive) to 1 mm (inclusive), and grooves on a side of the crown portion in the plurality of grooves have lengths longer than lengths of grooves on a side of the sole portion in the plurality of grooves. 2. The golf club head according to claim 1 , wherein an area of a region of the face portion where the plurality of grooves are formed is not less than 50% of an area of the face portion. 3. The golf club head according to claim 1 , wherein the plurality of grooves are formed by laser machining. 4. The golf club head according to claim 1 , wherein the plurality of grooves are formed at least from a central portion of the face portion to a toe-side portion and a heel-side portion, the plurality of score lines are formed in the toe-side portion and the heel-side portion, and the score lines are not formed in the central portion. 5. The golf club head according to claim 1 , wherein the plurality of grooves are formed at least in a central portion of the face portion, and at least one groove deeper than the plurality of grooves is formed in the central portion. 6. The golf club head according to claim 1 , wherein the plurality of grooves are arrayed in an up-and-down direction of the face portion. 7. The golf club head according to claim 1 , wherein each groove of the plurality of grooves comprises a straight groove extending in a toe-heel direction, and the plurality of grooves are arrayed in an up-and-down direction of the face portion at equal pitches. 8. The golf club head according to claim 1 , wherein the depth of the plurality of grooves is not less than 0.003 mm. 9. The golf club head according to claim 1 , wherein the width of the plurality of grooves ranges from 0.05 mm (inclusive) to 0.3 mm (inclusive). 10. The golf club head according to claim 1 , wherein the lengths of the plurality of grooves are shorter the closer the respective groove is to the sole portion. 11. The golf club head according to claim 1 , wherein a formation region of the plurality of grooves in the face portion has a cup shape. 12. The golf club head according to claim 1 , wherein a dot-shaped groove is formed in a central portion of the face portion.
Assignees
Inventors
Classifications
Human Necessities · mapped topic
- A63B53/0466Primary
wood-type · CPC title
Human Necessities · mapped topic
Details of grooves or the like on the impact surface · CPC title
characterised by specific dimensions, e.g. thickness · CPC title
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Frequently asked questions
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- What does patent US9901789B2 cover?
- A golf club head according to this invention is a wood type golf club head including a face portion, a crown portion, and a sole portion. A plurality of grooves are formed in the face portion. The depth of the plurality of grooves is less than 0.025 mm. Each pitch between adjacent grooves of the plurality of grooves ranges from 0.1 mm (inclusive) to 1 mm (inclusive).
- Who is the assignee on this patent?
- Bridgestone Sports Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A63B53/0466. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 27 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).