Patent US6465573B1 successfully refreshed from Google Patents.
US6465573B1
Expired / Lapsed
US
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Solid golf ball
Assignee: Bridgestone Sports Co Ltd
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Filing: 2000-07-17
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Granted: 2002-10-15
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Expires: 2020-07-17
Abstract
Abstract A solid golf ball comprising a core, an intermediate layer, and a cover is improved in rebound, distance and feel when the intermediate layer is comprised of a thermoplastic resin in admixture with rubber powder.
Inventors
- 👤 Takashi Maruko
- 👤 Hisashi Yamagishi
- 👤 Yutaka Masutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:56
CPC Classifications
C; C08; C08L; C08L21/00; A; A63; A63B; A63B37/00; A63B37/0003; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L67/00; C08L67/02; C08L75/00; C08L75/04; A63B37/0038; A63B37/004; A63B37/0043; A63B37/005; A63B37/006; A63B37/0065
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
103 words
A solid golf ball comprising a core, an intermediate layer enclosing the core, and a cover enclosing the intermediate layer, said intermediate layer being comprised of a thermoplastic resin in admixture with rubber powder, wherein said thermoplastic resin is selected from the group consisting of a polyester resin, polyurethane resin, polyurethane ester resin, and a mixture thereof, and has a glass transition temperature of up to −10° C. and a resilience of at least 50, and wherein the core is formed of a rubber composition and has a deflection of 2.0 to 5.0 mm when a load of 100 kg is applied thereto.
Claim 2
Dependent Claim
103 words
A solid golf ball comprising a core, an intermediate layer enclosing the core, and a cover enclosing the intermediate layer, said intermediate layer being comprised of a thermoplastic resin in admixture with rubber powder, wherein said thermoplastic resin is selected from the group consisting of a polyester resin, polyurethane resin, polyurethane ester resin, and a mixture thereof, and has a glass transition temperature of up to −10° C. and a resilience of at least 50, and wherein the core is formed of a rubber composition and has a deflection of 2.0 to 5.0 mm when a load of 100 kg is applied thereto.
Claim 3
Dependent Claim
31 words
The solid golf ball of claim 1 , wherein the intermediate layer has a gage of 1.0 to 8.0 mm and the cover has a gage of 0.5 to 3.0 mm.
Claim 4
Dependent Claim
26 words
The solid golf ball of claim 1 wherein said thermoplastic resin and said rubber powder are admixed in a weight ratio of from 75:25 to 25:75.
Claim 5
Dependent Claim
35 words
The solid golf ball of claim 1 wherein said rubber powder is obtained by vulcanizing a rubber composition comprising 100 parts by weight of polybutadiene and 30 to 45 parts by weight of zinc diacrylate.
Claim 6
Dependent Claim
21 words
The solid golf ball of claim 1 wherein said rubber powder has a mean particle size of 0.7 to 3 mm.
Claim 7
Dependent Claim
22 words
The solid golf ball of claim 1 wherein said rubber powder is formed of a rubber composition similar to the core-forming composition.
Claim 8
Dependent Claim
30 words
The solid golf ball of claim 1 wherein the admixed layer of the intermediate layer has a Shore D hardness of 20 to 55 as measured without the rubber powder.
Claim 9
Dependent Claim
34 words
The solid golf ball, of claim 7 wherein the cover is formed of thermoplastic resin having a Shore D hardness of 40 to 70 which is higher than that of the admixed layer thereof.
Claim 10
Dependent Claim
114 words
A solid golf ball comprising a core, a mantle layer enclosing the core, an intermediate layer enclosing the mantle layer, and a cover enclosing the intermediate layer, said mantle layer or said intermediate layer being comprised of a thermoplastic resin in admixture with rubber powder, wherein said thermoplastic resin is selected from the group consisting of a polyester resin, polyurethane resin, polyurethane ester resin, and a mixture thereof, and has a glass transition temperature of up to −10° C. and a resilience of at least 50, and wherein the core is formed of a rubber composition and has a deflection of 2.0 to 5.0 mm when a load of 100 kg is applied thereto.
Claim 11
Dependent Claim
114 words
A solid golf ball comprising a core, a mantle layer enclosing the core, an intermediate layer enclosing the mantle layer, and a cover enclosing the intermediate layer, said mantle layer or said intermediate layer being comprised of a thermoplastic resin in admixture with rubber powder, wherein said thermoplastic resin is selected from the group consisting of a polyester resin, polyurethane resin, polyurethane ester resin, and a mixture thereof, and has a glass transition temperature of up to −10° C. and a resilience of at least 50, and wherein the core is formed of a rubber composition and has a deflection of 2.0 to 5.0 mm when a load of 100 kg is applied thereto.
Claim 12
Dependent Claim
26 words
The solid golf ball of claim 9 wherein said thermoplastic resin and said rubber powder are admixed in a weight ratio of from 75:25 to 25:75.
Claim 13
Dependent Claim
35 words
The solid golf ball of claim 6 wherein said rubber powder is obtained by vulcanizing a rubber composition comprising 100 parts by weight of polybutadiene and 30 to 45 parts by weight of zinc diacrylate.
Claim 14
Dependent Claim
21 words
The solid golf ball of claim 9 wherein said rubber powder has a mean particle size of 0.7 to 3 mm.
Claim 15
Dependent Claim
22 words
The solid golf ball of claim 9 wherein said rubber powder is formed of a rubber composition similar to the core-forming composition.
Claim 16
Dependent Claim
34 words
The solid golf ball of claim 9 wherein the admixed layer of the mantle layer or the intermediate layer has a Shore D hardness of 20 to 55 as measured without the rubber powder.
Claim 17
Dependent Claim
31 words
The solid golf ball of claim 14 wherein the rubber powder-free layer has a Shore D hardness of 55 to 70 which is higher than the hardness of admixed layer thereof.
Claim 18
Dependent Claim
34 words
The solid golf ball of claim 14 wherein the cover is formed of thermoplastic resin having a Shore D hardness of 40 to 70 which is higher than that of the admixed layer thereof.
Claim 19
Dependent Claim
31 words
The solid golf ball of claim 9 wherein the mantle layer has a gage of 0.5 to 3.0 mm and the intermediate layer has a gage of 1.0 to 7.0 mm.
Claim 20
Dependent Claim
30 words
The solid golf ball of claim 9 wherein the intermediate layer has a gage of 1.0 to 7.0 mm and the cover has a gage of 0.5 to 3.0 mm.
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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) | 2005-10-14 | 2006-04-15 | 2006-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-14 | 2010-04-15 | 2010-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-14 | 2014-04-15 | 2014-10-15 | $7700.00 | Window Closed / Lapsed |