Golf ball and method of manufacture
US-2015375050-A1 · Dec 31, 2015 · US
Golf ball
US9028343B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9028343-B2 |
| Application number | US-201213599441-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 30, 2012 |
| Priority date | Aug 31, 2011 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
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Abstract
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The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the cover is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition satisfying properties of rebound resilience of 54% or more and a shear loss modulus G″ of 5.03×10 6 Pa or less when measured in a shear mode using a dynamic viscoelasticity measuring apparatus at the conditions of the temperature of 0° C., and the oscillation frequency of 10 Hz, and the spherical core has a hardness distribution that R 2 of a linear approximate curve determined by a least-squares method is 0.95 or more, when plotting JIS-C hardness measured at a center, a surface and at intervals of 2.5 mm from the center of the spherical core, versus distances from the center of the spherical core.
First claim
Opening claim text (preview).
What is claimed is: 1. A golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the cover layer is formed from a polyurethane composition containing as resin component a polyurethane elastomer formed from 1,4-bis(isocyanatomethyl)cyclohexane as a polyisocyanate component, wherein the polyurethane composition has a rebound resilience of 54% or more, a slab hardness ranging from 25 to 53 in Shore D hardness, and a shear loss modulus…
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Classifications
Chemistry & Metallurgy · mapped topic
Human Necessities · mapped topic
- A63B37/0022Primary
Human Necessities · mapped topic
Human Necessities · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9028343B2 cover?
- The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the cover is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition satisfying properties of rebound resilience of 54% or more and a shear loss modulus G″ of 5.03×10 6 Pa or less when meas…
- Who is the assignee on this patent?
- Tarao Toshiyuki, Shiga Kazuyoshi, Mikura Chiemi, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification A63B37/0022. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue May 12 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).