Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Golf ball

a golf ball and ball technology, applied in the field of golf balls, can solve the problems of intense research and development on golf balls, and achieve the effect of excellent durability and cracking

Inactive Publication Date: 2013-11-07
BRIDGESTONE SPORTS
View PDF12 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a golf ball with improved distance performance on shots with both drivers and middle irons. The design also has excellent durability and can withstand repeated striking. The technical effects achieved by optimizing the internal hardness profile of the core include achieving satisfactory distances with salient features of professional golfers' shots and skilled amateurs' shots, as well as improving durability to cracking.

Problems solved by technology

Lately, research and development on golf balls has been especially intense.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Golf ball
  • Golf ball
  • Golf ball

Examples

Experimental program
Comparison scheme
Effect test

examples

[0132]Examples of the invention and Comparative Examples are given below by way of illustration, and not by way of limitation.

examples 1 and 2

, Comparative Examples 1 to 6

[0133]Golf ball cores were produced by using the rubber formulations in the respective examples of the invention and comparative examples as shown in Table 1 below to prepare core compositions, then molding and vulcanizing the core compositions under the vulcanization conditions in the table. With regard to the core in Comparative Example 6, changes in the hardness profile were effected by impregnating the molded and vulcanized core with an acrylic acid impregnating solution.

TABLE 1ExampleComparative Example12123456Polybutadiene A8080809510010050Polybutadiene C2050Polyisoprene rubber5Polybutadiene B20202080Peroxide (1)1.051.051.053.00.30.6Peroxide (2)1.20.33.00.6Barium sulfate23.421.0Zinc oxide17.425.631.24.020.510.47.25.0Antioxidant0.20.20.20.10.10.10.1Zinc acrylate40.320.16.334.037.534.040.023.5Zinc stearate555555Sulfur0.0850.0850.0850.10.1Zinc salt of0.40.40.40.61.51.01.50.1pentachlorothiophenolVulcanization temperature (° C.)155155155155155160160150V...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
one-minute half-life temperatureaaaaaaaaaa
diameteraaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a golf ball having a core and a cover of at least one layer. The cover includes an outermost layer and at least one intermediate layer interposed between the outermost layer and the core. The core has a cross-sectional hardness which, letting R (mm) be the radius of the core, A be the JIS-C hardness at the center of the core, B be the JIS-C hardness at a position R / 3 mm from the core center, C be the JIS-C hardness at a position R / 1.8 mm from the core center, D be the JIS-C hardness at a position R / 1.5 mm from the core center, and E be the JIS-C hardness at the surface of the core, satisfies formulas (1) B-A<D-B, (2) C-A@8, and (3) E-B>=15. The intermediate layer and the outermost layer have a hardness relationship therebetween which satisfies the formula "material hardness of intermediate layer>=material hardness of outermost layer."

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a continuation-in-part of copending application Ser. No. 13 / 461,187 filed on May 1, 2012, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a golf ball having a core and a cover of at least one layer, which cover includes an outermost layer and at least one intermediate layer interposed between the outermost layer and the core. More specifically, the invention relates to a golf ball which achieves satisfactory distances both on shots with drivers and on shots with middle irons used by professional golfers and skilled amateurs, and which also has an excellent durability to cracking when repeatedly struck.[0003]Solid golf balls have a relatively simple inner structure composed of a core and a cover, although various golf ball properties such as rebound, feel, spin on approach shots and durability depend to a large degree on synergy between t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): A63B37/00
CPCA63B37/0092A63B37/0039A63B37/0018A63B37/0063A63B37/0075A63B37/0076A63B37/0084A63B45/00A63B37/0031A63B37/0043A63B37/0064A63B37/0003A63B37/0051A63B37/0096A63B37/0087
Inventor KIMURA, AKIRAOGAWANA, TORUNAKAMURA, RYOTA
Owner BRIDGESTONE SPORTS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com