Hollow golf club head and method of manufacturing the same
US-9174100-B2 · Nov 3, 2015 · US
Golf club head
US9522310B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9522310-B2 |
| Application number | US-201414453730-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 7, 2014 |
| Priority date | Aug 8, 2013 |
| Publication date | Dec 20, 2016 |
| Grant date | Dec 20, 2016 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
A hollow golf club head has a crown portion extending from a face portion and configured so as to generate good ball hitting sound. The crown portion is provided with a first region having a first thickness, a second region having a second thickness and a third region having a third thickness, wherein the third thickness is less than the second thickness which is less than the first thickness. The first region is disposed in a face portion side of the crown portion and extending in the toe-heel direction. The third region is disposed backward of the first region. The second region surrounds the third region.
First claim
Opening claim text (preview).
The invention claimed is: 1. A golf club head with a hollow therein, said golf club head comprising: a face portion having a club face for hitting a ball, and a crown portion extending from the face portion to form a top surface of the club head, wherein the crown portion provided with a first region having a first thickness, a second region having a second thickness less than the first thickness, and a plurality of third regions having a third thickness less than the second thickness, wherein the first region is disposed in a face portion side of the crown portion and extends in the toe-heel direction, the third regions are disposed backward of the first region, and the second region surrounds the third regions, and wherein, in a top view of the club head in its standard state, said third regions extend along respective directions radiating from the vicinity of a point substantially on a straight line extending between a sweet spot and a center of gravity of the head while gradually increasing their widths measured perpendicularly to the respective radial directions, and at least three of the third regions are disposed on the heel side of the center of gravity of the head and at least three of the third regions are disposed on the toe side of the center of gravity of the head. 2. The golf club head according to claim 1 , wherein in the top view of the golf club head under its standard state, the area of the first region is 8% to 30% of the area of the crown portion. 3. The golf club head according to claim 1 , wherein in the top view of the golf club head under its standard state, the area of the second region is 40% to 80% of the area of the crown portion. 4. The golf club head according to claim 1 , wherein in the top view of the golf club head under its standard state, the area of the third region is 10% to 25% of the area of the crown portion. 5. The golf club head according to claim 1 , wherein the first thickness is 0.6 to 1.7 mm, the second thickness is 0.5 to 0.9 mm and the third thickness is 0.3 to 0.6 mm. 6. The golf club head according to claim 1 , wherein the first thickness is constant, the second thickness is constant, and a 1st transitional zone of which thickness is gradually decreased from the first region to the second region is formed between the first region and the second region. 7. The golf club head according to claim 1 , wherein the second thickness is constant, the third thickness is constant, and a 2nd transitional zone of which thickness is gradually decreased from the second region to the third region is formed between the second region and the third region. 8. The golf club head according to claim 1 , wherein four of the third regions are disposed on the heel side of the center of gravity of the head, and four of the third regions are disposed on the toe side of the center of gravity of the head. 9. The golf club head according to claim 1 , wherein the first thickness is constant, the second thickness is constant, the third thickness is constant, a first transitional zone of which thickness is gradually decreased from the first region to the second region is formed between the first region and the second region, and a second transitional zone of which thickness is gradually decreased from the second region to the third region is formed between the second region and each of the third regions.
Assignees
Inventors
Classifications
with slits · CPC title
Human Necessities · mapped topic
- A63B53/04Primary
Heads · CPC title
Human Necessities · mapped topic
- A63B53/0466Primary
wood-type · CPC title
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Frequently asked questions
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- What does patent US9522310B2 cover?
- A hollow golf club head has a crown portion extending from a face portion and configured so as to generate good ball hitting sound. The crown portion is provided with a first region having a first thickness, a second region having a second thickness and a third region having a third thickness, wherein the third thickness is less than the second thickness which is less than the first thickness. …
- Who is the assignee on this patent?
- Dunlop Sports Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A63B53/04. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Dec 20 2016 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).