Golf ball
US-2015375049-A1 · Dec 31, 2015 · US
Golf ball
US9707452B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9707452-B2 |
| Application number | US-201514919303-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 21, 2015 |
| Priority date | Dec 26, 2014 |
| Publication date | Jul 18, 2017 |
| Grant date | Jul 18, 2017 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A golf ball has a large number of dimples 10 on a surface thereof. The dimples 10 include a plurality of small dimples 10 S each having an area of less than 8.0 mm 2 , and a plurality of large dimples 10 L each having an area of equal to or greater than 8.0 mm 2 . A ratio PS of a sum of areas of all the small dimples 10 S to a surface area of a phantom sphere of the golf ball is less than 2.0%. The number NL of the large dimples 10 L is equal to or greater than 250 but less than 450. The number NL of the large dimples 10 L and a degree G of uniformity of areas of the large dimples 10 L satisfy the following mathematical formula (II): G <0.0032· NL +0.26 (II).
First claim
Opening claim text (preview).
What is claimed is: 1. A golf ball having a large number of dimples on a surface thereof, wherein the dimples include a plurality of small dimples each having an area of less than 8.0 mm 2 , and a plurality of large dimples each having an area of equal to or greater than 8.0 mm 2 , a ratio PS of a sum of areas of all the small dimples to a surface area of a phantom sphere of the golf ball is less than 2.0%, the number NL of the large dimples is equal to or greater than 250 but less than 450, and the number NL of the large dimples and a degree G of uniformity of areas (mm 2 ) of the large dimples satisfy the following mathematical formula (VI): G<0.0032·NL−0.04 (VI). 2. The golf ball according to claim 1 , wherein the ratio 20 PS is equal to or greater than 0.7%. 3. The golf ball according to claim 1 , wherein the number NS of the small dimples is equal to or greater than 6 but equal to or less than 20. 4. The golf ball according to claim 1 , wherein a ratio (NS/N) of the number NS of the small dimples to a total number N of the dimples is equal to or greater than 0.01 but equal to or less than 0.07. 5. The golf ball according to claim 1 , wherein the number NL is equal to or greater than 290 but less than 380. 6. The golf ball according to claim 1 , wherein each dimple has a depth of a deepest portion from a surface of the phantom sphere of equal to or greater than 0.10 mm but equal to or less than 0.65 mm. 7. The golf ball according to claim 1 , wherein a ratio of a sum of areas of all the dimples to the surface area of the phantom sphere of the golf ball is equal to or greater than 80%. 8. The golf ball according to claim 1 , wherein the ratio PS is equal to or less than 1.0% but less than 2.0%. 9. The golf ball according to claim 1 , wherein the number NL of the large dimples is equal to or greater than 250 but equal to or less than 380. 10. The golf ball according to claim 1 , wherein the degree G is equal to or less than 1.15. 11. A golf ball having a large number of dimples on a surface thereof, wherein the dimples include a plurality of small dimples each having an area of less than 8.0 mm 2 , and a plurality of large dimples each having an area of equal to or greater than 8.0 mm 2 , a ratio PS of a sum of areas of all the small dimples to a surface area of a phantom sphere of the golf ball is less than 2.0%, the number NL of the large dimples is equal to or greater than 250 but less than 450, and the number NL of the large dimples and a degree G of uniformity of areas (mm 2 ) of the large dimples satisfy the following mathematical formula (II): G< 0.0032− NL+ 0.26 (II), wherein a total volume of the dimples is equal to or greater than 450 mm 3 but equal to or less than 750 mm 3 .
Assignees
Inventors
Classifications
Specified total dimple volume · CPC title
- A63B37/0018Primary
Specified number of dimples · CPC title
Specified dimple diameter · CPC title
Arrangement or layout of dimples · CPC title
Specified individual dimple volume · CPC title
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Frequently asked questions
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- What does patent US9707452B2 cover?
- A golf ball has a large number of dimples 10 on a surface thereof. The dimples 10 include a plurality of small dimples 10 S each having an area of less than 8.0 mm 2 , and a plurality of large dimples 10 L each having an area of equal to or greater than 8.0 mm 2 . A ratio PS of a sum of areas of all the small dimples 10 S to a surface area of a phantom sphere of the golf ball is less tha…
- Who is the assignee on this patent?
- Dunlop Sports Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A63B37/0018. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jul 18 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).