US5467994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf ball
Assignee: Dunlop Sports Co Ltd
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Filing: 1994-10-31
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Granted: 1995-11-21
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Expires: 2014-10-31
Abstract
Abstract A golf ball (G) comprises a liquid center (1), a rubber thread layer (2) formed around the liquid center (1) and a cover (3) covering the rubber thread layer (2), wherein said liquid center (1) has a diameter (L1) of 29.5 to 32.0 mm and the ratio, Y, of the sum total of the flat surface area (5S) of dimples (5) to the surface area (G-1) of the same sphere having no dimples formed thereon is within the range of 0.80 to 0.84. The total volumes of dimples (5) are in the range of 290 to 340 mm3. The dimples (5) include a plurality of kinds of dimples having different diameters.
Inventors
- 👤 Keiji Moriyama
- 👤 Tadahiro Ebisuno
- 👤 Kazushige Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0004; A63B37/0021; A63B37/00215; A63B37/02; A63B37/08; A63B2037/085; A63B2037/087; A63B37/0017; A63B37/002; A63B37/005; A63B37/0051; A63B37/0052; A63B37/0053; A63B37/006; A63B37/0064; A63B37/007; A63B37/0072; A63B37/0076
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
A golf ball comprising a liquid center, a rubber thread layer formed around said liquid center, and a cover covering said rubber thread layer; wherein said liquid center has a diameter of 29.5 to 32.0 mm and the ratio, Y, of the sum total of the flat surface area surrounded by an outer edge of each dimple to the surface area of the same sphere having no dimples formed thereon is within the range of 0.80 to 0.84.
Claim 2
Dependent Claim
78 words
A golf ball comprising a liquid center, a rubber thread layer formed around said liquid center, and a cover covering said rubber thread layer; wherein said liquid center has a diameter of 29.5 to 32.0 mm and the ratio, Y, of the sum total of the flat surface area surrounded by an outer edge of each dimple to the surface area of the same sphere having no dimples formed thereon is within the range of 0.80 to 0.84.
Claim 3
Dependent Claim
26 words
A golf ball as claimed in claim 1, wherein the total volumes of the dimples are in the range of 290 to 340 mm 3 .
Claim 4
Dependent Claim
21 words
A golf ball as claimed in claim 1, wherein said dimples include a plurality of kinds of dimples having different diameters.
Claim 5
Dependent Claim
21 words
A golf ball as claimed in claim 2, wherein said dimples include a plurality of kinds of dimples having different diameters.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-20 | 1999-05-22 | 1999-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-20 | 2003-05-22 | 2003-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-20 | 2007-05-22 | 2007-11-21 | $7700.00 | Window Closed / Lapsed |