US4946167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf ball
Assignee: Dunlop Sports Co Ltd
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Filing: 1989-02-24
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Granted: 1990-08-07
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Expires: 2009-02-24
Abstract
Abstract The disclosure relates to a dimple arrangement of a golf ball in which 10 to 25 dimples of at least two different diameters are arranged in 24 congruent spherical triangles, respectively consisting of two equal sides and divided by the ridge lines of a complete 24-hedron so that the dimple arrangements in the 24 congruent spherical triangles are identical to each other, and one of the great circle paths formed by connecting the ridge lines with each other coincides with a parting line formed by a pair of hemispherical molds.
Inventors
- 👤 Kaname Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0004; A63B37/0006; A63B37/0012; A63B37/0017; A63B37/0018; A63B37/0019; A63B37/002; A63B37/0023; A63B37/0024; A63B37/0026; A63B37/0029; A63B37/0031; A63B37/005; A63B37/0051; A63B37/0052; A63B37/006; A63B37/0064
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A golf ball having a spherical surface which is divided into a plurality of congruent spherical triangles to form a complete geodesic 24-hedron, 10 to 25 dimples of at least two different diameters arranged in each of the 24 congruent spherical triangles, said spherical surface consisting of two equal sides and divided by the ridge lines or great circle paths of a complete 24-hedron so that the dimple arrangements in each of the 24 congruent spherical triangles are identical to each other, and one of the great circle paths being formed by connecting the ridge lines with each other in coincidence with a parting line formed by a pair of hemispherical molds, wherein at the intersection of 3 great circle zones, 6 dimples, which have diameters in the range of 2.0 to 5.0 mm, are arranged so as to contact each other.
Claim 2
Dependent Claim
142 words
A golf ball having a spherical surface which is divided into a plurality of congruent spherical triangles to form a complete geodesic 24-hedron, 10 to 25 dimples of at least two different diameters arranged in each of the 24 congruent spherical triangles, said spherical surface consisting of two equal sides and divided by the ridge lines or great circle paths of a complete 24-hedron so that the dimple arrangements in each of the 24 congruent spherical triangles are identical to each other, and one of the great circle paths being formed by connecting the ridge lines with each other in coincidence with a parting line formed by a pair of hemispherical molds, wherein at the intersection of 3 great circle zones, 6 dimples, which have diameters in the range of 2.0 to 5.0 mm, are arranged so as to contact each other.
Claim 3
Dependent Claim
37 words
The golf ball as defined in claim 1, wherein the dimples are arranged inside the respective spherical triangles so as to establish a line symmetrical relationship without intersecting with the phantom lines of the complete geodesic 24-hedron.
Claim 4
Dependent Claim
23 words
The golf ball as defined in claim 1, wherein the minimum angle at which adjacent great circles intersect with each other is 60°.
Claim 5
Dependent Claim
19 words
The golf ball as defined in claim 3, wherein all the dimples have diameters of 2.00 to 5.00 mm.
Claim 6
Dependent Claim
15 words
The golf ball as defined in claim 1, wherein the dimples include four different types.
Claim 7
Dependent Claim
23 words
The golf ball as defined in claim 1, wherein the dimples are arranged to establish a symmetrical relationship within each of the triangles.
Claim 8
Dependent Claim
23 words
The golf ball as defined in claim 1, wherein the dimples are arranged in a line of symmetry within each of the triangles.
Claim 9
Dependent Claim
32 words
The golf ball as defined in claim 1, wherein 6 dimples having the smallest diameter are arranged at the intersection of the 3 great circle zones so as to contact each other.
Claim 10
Dependent Claim
25 words
The golf ball as defined in claim 1, wherein 6 dimples having the smallest diameters are positioned with a plurality of kinds of circular dimples.
Claim 11
Dependent Claim
11 words
The golf ball as defined in claim 1, having 240-600 dimples.
References Cited (Backward Citations)
US4772026A
Cited
JPS6415071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |