EP0218311A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Golf ball
Assignee: Sumitomo Rubber Industries Ltd
•
Filing: 1986-03-07
•
Granted: —
•
Expires: 2006-03-07
Abstract
Abstract An improved golf ball which includes a golf ball main body, and large dimples having a large diameter A and small dimples having a small diameter B which are respectively formed in a large number on the peripheral surface of the golf ball main body. The large and small dimples are set in the ratio of the diameters A/B within the range of 1.25 to 1.50.
Inventors
- 👤 Kengo Oka
- 👤 Kaname Yamada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 10:23
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0004; A63B37/0006; A63B37/0017; A63B37/0018; A63B37/0019; A63B37/002; A63B37/0021; A63B37/0023; A63B37/0029; A63B37/0031; A63B37/005; A63B37/0051; A63B37/0052; A63B37/006; A63B37/0062; A63B37/0064; A63B37/0068; A63B37/007; A63B37/0077; A63B37/0084; A63B37/0096; A63B37/0024; A63B37/0026; A63B37/0053; A63B37/0072; A63B37/0074
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A golf ball which comprises a golf ball main body, and large dimples having a large diameter A and small dimples having a small diameter B which are respectively formed in a large number on the peripheral surface of said golf ball main body, said large and small dimples being set in the ratio of the diameters A/B within the range of 1.25 to 1.50.
Claim 2
Dependent Claim
65 words
A golf ball which comprises a golf ball main body, and large dimples having a large diameter A and small dimples having a small diameter B which are respectively formed in a large number on the peripheral surface of said golf ball main body, said large and small dimples being set in the ratio of the diameters A/B within the range of 1.25 to 1.50.
Claim 3
Dependent Claim
31 words
A golf ball as claimed in Claim 1, wherein said large dimples and small dimples are provided in approximately the same number on the surface of said golf ball main body.
Claim 4
Dependent Claim
65 words
A golf ball as claimed in Claim 1 or claim 2, wherein said large and small dimples are arranged on the peripheral surface of said golf ball main body in such a manner that any of said large dimples is located adjacent to at least one of said small dimples, with any of said small dimples being located adjacent to at least one large dimple.
Claim 5
Dependent Claim
36 words
A golf ball as claimed in any one of claims 1 to 3, wherein an interval C between the large and small dimples adjacent to each other is within the range of 0 to 0.5 mm.
Claim 6
Dependent Claim
141 words
A golf ball as claimed in any one of claims 1 to 4, having a total dimples volume represented by a formula, V T = V A + V B where V T = total dimples volume, V A = total large dimples volume, V B = total small dimples volume, N A = total number of the large dimples, N B = total number of the small dimples, A k = diameter of the large dimple at a point descended in a direction of depth of k microns from the dimple edge (mm) , B k = diameter of the small dimple at a point descended in a direction of depth of k microns from the dimple edge (mm) , n = depth of dimple (microns), said total dimples volume being set in the range of 250 to 400 mm³.
Claim 7
Dependent Claim
77 words
A golf ball as claimed in Claim 5, wherein the total number N of the dimples is set at about 336 pieces, with the number of each of the large dimples and the small dimples being set at about 168 pieces, the large diameter A of the large dimples being set in the range of 4.3 to 4.9 mm, with the small diameter B of the small dimples set in the range of 3.0 to 3.6 mm.
Claim 8
Dependent Claim
77 words
A golf ball as claimed in Claim 5, wherein the total number N of the dimples is set at about 380 pieces, with the number of each of the large dimples and the small dimples being set at about 190 pieces, the large diameter A of the large dimples being set in the range of 3.8 to 4.4 mm, with the small diameter B of the small dimples set in the range of 2.6 to 3.2 mm.
Claim 9
Dependent Claim
77 words
A golf ball as claimed in Claim 5, wherein the total number N of the dimples is set at about 416 pieces, with the number of each of the large dimples and the small dimples being set at about 208 pieces, the large diameter A of the large dimples being set in the range of 3.7 to 4.3 mm, with the small diameter B of the small dimples set in the range of 2.5 to 3.1 mm.
Claim 10
Dependent Claim
18 words
A golf ball having surface dimples characterised in that dimples of at least two different sizes are present.
Claim 11
Dependent Claim
18 words
A golf ball having surface dimples characterised in that dimples of at least two different sizes are present.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.