Patent US3528004A successfully refreshed from Google Patents.
Patent US5553852A successfully refreshed from Google Patents.
US5553852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-piece solid golf ball
Assignee: Bridgestone Sports Co Ltd
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Filing: 1994-07-08
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Granted: 1996-09-10
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Expires: 2014-07-08
Abstract
Abstract A three-piece solid golf ball comprising a center core, an intermediate layer, and a cover. The center core (1) has a diameter of at least 29 mm, a hardness in the range of 45-80 JIS C and a specific gravity of less than 1.4. The intermediate layer (2) has a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale. The cover (3) has a thickness of 1-3 mm and a hardness of 50-85 JIS C. The ball has a good total balance of properties in that feeling and controllability are improved at no sacrifice of flying performance and durability.
Inventors
- 👤 Hiroshi Higuchi
- 👤 Hisashi Yamagishi
- 👤 Yoshinori Egashira
- 👤 Tadatoshi Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:58
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/02; A63B37/0003; A63B37/0023; A63B37/0029; A63B37/0031; A63B37/0033; A63B37/0038; A63B37/0039; A63B37/004; A63B37/0043; A63B37/0045; A63B37/0047; A63B37/005; A63B37/006; A63B37/0062; A63B37/00621; A63B37/0064; A63B37/0066; A63B37/007; A63B37/0072; A63B37/0075
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A three-piece solid golf ball comprising; a center core, an intermediate layer, and a cover enclosing the core through the intermediate layer, said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4, said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core, and said cover having a thickness of 1 to 3 mm and being softer than said intermediate layer.
Claim 2
Dependent Claim
105 words
A three-piece solid golf ball comprising; a center core, an intermediate layer, and a cover enclosing the core through the intermediate layer, said center core having a diameter of at least 29 mm and a specific gravity of less than 1.4, said intermediate layer having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale, the specific gravity of said intermediate layer being lower than the specific gravity of said center core, and said cover having a thickness of 1 to 3 mm and being softer than said intermediate layer.
Claim 3
Dependent Claim
20 words
The golf ball of claim 1 wherein said intermediate layer is formed of a high repulsion ionomer resin base composition.
Claim 4
Dependent Claim
35 words
The golf ball of claim 1 wherein said center core has a hardness of 45 to 80 on JIS C scale and said cover has a hardness of 50 to 85 on JIS C scale.
Claim 5
Dependent Claim
18 words
The golf ball of claim 1 wherein said center core is comprised of a polybutadiene base rubber composition.
Claim 6
Dependent Claim
20 words
The golf ball of claim 1 wherein the diameter of said center core is in the range of 29-37 mm.
Claim 7
Dependent Claim
29 words
The golf ball of claim 1 wherein a difference in the specific gravity between the center core and the intermediate layer is in the range of 0.1 to 0.5.
Claim 8
Dependent Claim
22 words
The golf ball of claim 1 wherein the specific gravity of said intermediate layer is in the range of 0.9 to 1.0.
Claim 9
Dependent Claim
22 words
The golf ball of claim 1 wherein the hardness of said intermediate layer is in the range of 85-100 on JIS C.
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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) | 1999-09-10 | 2000-03-11 | 2000-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-10 | 2004-03-11 | 2004-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-10 | 2008-03-11 | 2008-09-10 | $7700.00 | Window Closed / Lapsed |