The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2014
Filed:
Nov. 07, 2008
Kazuya Kamino, Kobe, JP;
Keiji Ohama, Kobe, JP;
Toshiyuki Tarao, Kobe, JP;
SRI Sports Limited, Kobe-shi, JP;
Abstract
The object of the present invention is to provide a golf ball that satisfies both of the flight distance at the shot with a driver, a long iron, and a middle iron and the controllability at the approach shot with a short iron and is also excellent in the abrasion resistance of the cover. The present invention provides a golf ball comprising a core consisting of a center and at least one intermediate layer covering the center, and a cover covering the core, wherein the cover is formed from a cover composition containing, as a resin component, a thermoplastic polyurethane (A) and a polyisocyanate mixture (B) in which a urethane prepolymer (b-1) having at least two isocyanate groups or a polyisocyanate (b-2) having at least three isocyanate groups is dispersed in a thermoplastic resin (b-3) which does not substantially react with an isocyanate group; and wherein the cover composition has a slab hardness of 60 or less in Shore D hardness, and the core has a hardness difference (Hs−Ho) between a surface hardness Hs and a center hardness Ho of from 15 to 50 in Shore D hardness.