Patent US5273286A successfully refreshed from Google Patents.
US5273286A
Expired / Lapsed
US
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Multiple concentric section golf ball
Assignee: CHIN SHANG INDUSTRIAL Co Ltd A TAIWANESE CORP
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Filing: 1992-11-06
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Granted: 1993-12-28
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Expires: 2012-11-06
Abstract
Abstract A multi-section golf ball comprising first, second, third, and fourth ball sections each having a spherical outer surface, and all sections having a common center; the first section being an inner core closest to the center and consisting of substantially incompressible material; the second section being an intermediate core in the form of a shell surrounding the inner core, the second section consisting essentially of carbonaceous material; the third section being an outer core in the form of a shell surrounding the intermediate core, the third section consisting essentially of an elastomer; the fourth section being a cover in the form of a shell surrounding the outer core; whereby the radius of gyration and spin rate of the golf ball can be controlled by selection of the weight, density, and size of each of the first, second and third sections.
Inventors
- 👤 Donald J. C. Sun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:22
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0023; A63B37/0024; A63B37/0026; A63B37/0029; A63B37/0033; A63B37/0038; A63B37/0039; A63B37/004; A63B37/0045; A63B37/005; A63B37/0051; A63B37/0052; A63B37/0054; A63B37/006; A63B37/0064; A63B37/007; A63B37/0072; A63B37/0076; A63B37/02; A63B37/08; A63B2037/085
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
A multi-section golf ball, comprising in combination: a) first, second, third, and fourth ball sections each having a spherical outer surface, and all sections having a common center, b) the first section being an inner core closest to said center and consisting of substantially incompressible material, c) the second section being an intermediate core in the form of a shell surrounding said inner core, the second section consisting essentially of carbonaceous material, d) the third section being an outer core in the form of a shell surrounding said intermediate core, the third section consisting essentially of an elastomer, e) the fourth section being a cover in the form of a shell surrounding said outer core, f) whereby the radius of gyration and spin rate of the golf ball can be controlled by selection of the weight, density, and size of each of the first, second and third sections.
Claim 2
Dependent Claim
148 words
A multi-section golf ball, comprising in combination: a) first, second, third, and fourth ball sections each having a spherical outer surface, and all sections having a common center, b) the first section being an inner core closest to said center and consisting of substantially incompressible material, c) the second section being an intermediate core in the form of a shell surrounding said inner core, the second section consisting essentially of carbonaceous material, d) the third section being an outer core in the form of a shell surrounding said intermediate core, the third section consisting essentially of an elastomer, e) the fourth section being a cover in the form of a shell surrounding said outer core, f) whereby the radius of gyration and spin rate of the golf ball can be controlled by selection of the weight, density, and size of each of the first, second and third sections.
Claim 3
Dependent Claim
26 words
The combination of claim 1 wherein said fourth section consists of a material selected from the group consisting of i) an ionomer ii) urethane iii) balata.
Claim 4
Dependent Claim
24 words
The combination of claim 1 wherein said inner core incompressible material is selected from the group consisting of metal, non-metal, liquid, and solid materials.
Claim 5
Dependent Claim
14 words
The combination of claim 1 wherein said intermediate core consists of reinforced carbon graphite.
Claim 6
Dependent Claim
14 words
The combination of claim 1 wherein said outer core consists essentially of polybutadiene rubber.
Claim 7
Dependent Claim
14 words
The combination of claim 1 wherein said inner and intermediate cores are bonded together.
Claim 8
Dependent Claim
14 words
The combination of claim 1 wherein said intermediate and outer cores are bonded together.
Claim 9
Dependent Claim
41 words
The combination of claim 1 wherein the densities of said cores are as follows: i) inner core--between 0.4 and 11.4 grams per cc; ii) intermediate core--between 0.2 and 4.0 grams per cc; iii) outer core--between 0.4 and 2.5 grams per cc.
Claim 10
Dependent Claim
20 words
The combination of claim 8 wherein the density of the ball cover is between 0.7 and 2.5 grams per cc.
Claim 11
Dependent Claim
38 words
The combination of claim 1 wherein the sections have outer diameters as follows: i) first section--between 0.25 and 1.125 inches ii) second section between 0.5 and 1.6 inches third section--between 1.0 and 1.66 inches iv) forth section--1.68 inches.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |