Multi-piece solid golf ball
US-9205306-B2 · Dec 8, 2015 · US
Golf ball
US8998748B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8998748-B2 |
| Application number | US-201213599736-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 30, 2012 |
| Priority date | Aug 31, 2011 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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Abstract
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A golf ball 2 includes a core 4 , a mid layer 6 , a reinforcing layer 8 , and a cover 10 . A hardness Hm of the mid layer 6 is greater than a hardness Hc of the cover 10 . A difference (Hm−Hc) is greater than 28. A hardness Hs2 at a surface of a sphere consisting of the core 4 and the mid layer 6 is greater than a hardness Hs3 at a surface of the golf ball 2 . A difference (Hs2−Hs3) is less than 5. A thickness Tm of the mid layer 6 is larger than a thickness Tc of the cover 10 . A ratio (Tm/Tc) is greater than 3.0 and less than 5.0. A diameter of the core 4 is equal to or greater than 38.2 mm. The hardness Hc of the cover 10 is equal to or less than 37.
First claim
Opening claim text (preview).
What is claimed is: 1. A golf ball comprising a core, a mid layer positioned outside the core, a reinforcing layer positioned outside the mid layer, and a cover positioned outside the reinforcing layer, wherein the mid layer material Shore D hardness Hm is greater than the cover material Shore D hardness Hc by an amount greater than 28, the surface of a sphere including the core and the mid layer has a Shore D hardness Hs2 that is greater than the golf ball surface Shore D hardn…
Assignees
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Classifications
Chemistry & Metallurgy · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
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Frequently asked questions
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- What does patent US8998748B2 cover?
- A golf ball 2 includes a core 4 , a mid layer 6 , a reinforcing layer 8 , and a cover 10 . A hardness Hm of the mid layer 6 is greater than a hardness Hc of the cover 10 . A difference (Hm−Hc) is greater than 28. A hardness Hs2 at a surface of a sphere consisting of the core 4 and the mid layer 6 is greater than a hardness Hs3 at a surface of the golf ball 2 . A difference (Hs2−Hs…
- Who is the assignee on this patent?
- Isogawa Kazuhiko, Matsuyama Yoshiko, Tachibana Kosuke, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification A63B37/0003. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Apr 07 2015 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).