US4076255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf balls
Assignee: UNIROYAL Ltd
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Filing: 1975-12-17
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Granted: 1978-02-28
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Expires: 1995-12-17
Abstract
Abstract A golf ball center composition comprising by weight 100 parts of a resilient elastomer, not more than 25 parts of a monomer capable of grafting, cross-linking or chain-extending the elastomer and not less then 70 parts of an inert filler, the composition being cured and having a Shore C hardness of not less than 60 DEG ; a golf ball comprising said center, an elastic thread wound around the center to form a core, and a cover molded onto the core; and a method of making such golf ball.
Inventors
- 👤 Travis Moore
- 👤 Hugh David Niblock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:46
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0023; A63B37/0024; A63B37/0026; A63B37/0029; A63B37/0031; A63B37/005; A63B37/006; A63B37/0062; A63B37/0067; A63B37/007; A63B37/0072; A63B37/0075; A63B37/0077; A63B37/008; A63B37/0083; A63B45/00; Y; Y10; Y10S; Y10S273/00; Y10S273/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
147 words
A golf ball comprising a center, an elastic thread wound around the center to form a core, and a cover molded onto the core, the center being formed from a composition comprising: (1) a cis-polybutadiene elastomer having a cis-content of not less than 80%; (2) not more than 25 parts by weight per hundred parts of elastomer of a monomer capable of grafting, cross-linking or chain extending the elastomer said monomer is selected from the metal salt of an unsaturated carboxylic acid and a polyol ester or anhydride of a polybasic unsaturated carboxylic acid; and (3) not less than 135 parts by weight per hundred parts of elastomer of an inert filler; said composition being cured and having a Shore C hardness of not less than 60° and being characterized by not requiring freezing of the center in order to wind the elastic thread around the center.
Claim 2
Dependent Claim
147 words
A golf ball comprising a center, an elastic thread wound around the center to form a core, and a cover molded onto the core, the center being formed from a composition comprising: (1) a cis-polybutadiene elastomer having a cis-content of not less than 80%; (2) not more than 25 parts by weight per hundred parts of elastomer of a monomer capable of grafting, cross-linking or chain extending the elastomer said monomer is selected from the metal salt of an unsaturated carboxylic acid and a polyol ester or anhydride of a polybasic unsaturated carboxylic acid; and (3) not less than 135 parts by weight per hundred parts of elastomer of an inert filler; said composition being cured and having a Shore C hardness of not less than 60° and being characterized by not requiring freezing of the center in order to wind the elastic thread around the center.
Claim 3
Dependent Claim
18 words
A golf ball according to claim 1 in which the Shore C hardness is not less than 70°.
Claim 4
Dependent Claim
25 words
A golf ball according to claim 1 in which the elastomer consists wholly of polybutadiene having a cis-content of not less than 96% by weight.
Claim 5
Dependent Claim
33 words
A golf ball according to claim 1 in which the monomer is the metal salt of an unsaturated carboxylic acid, the metal ion being uncomplexed and having a valence from 1 to 3.
Claim 6
Dependent Claim
24 words
A golf ball according to claim 4 in which the monomer is the reaction product of zinc oxide with methacrylic acid or acrylic acid.
Claim 7
Dependent Claim
21 words
A golf ball according to claim 1 in which the monomer is present in from 5 to 20 parts by weight.
Claim 8
Dependent Claim
26 words
A golf ball according to claim 1 in which the filler is present in from 135 to 300 parts by weight per 100 parts of elastomer.
Claim 9
Dependent Claim
17 words
A golf ball according to claim 1 in which the center composition includes a silane coupling agent.
Claim 10
Dependent Claim
110 words
A golf ball center composition comprising by weight 100 parts of a cis-polybutadiene elastomer having a cis-content of not less than 80%, not more than 25 parts of a monomer capable of grafting, cross-linking or chain-extending the elastomer said monomer is selected from the metal salt of an unsaturated carboxylic acid and a polyol ester or anhydride of a polybasic unsaturated carboxylic acid and not less than 135 parts of an inert filler, the composition being cured and having a Shore hardness of not less than 60° and being characterized by not requiring freezing in order to wind an elastomeric thread around the center to form a golf ball core.
Claim 11
Dependent Claim
110 words
A golf ball center composition comprising by weight 100 parts of a cis-polybutadiene elastomer having a cis-content of not less than 80%, not more than 25 parts of a monomer capable of grafting, cross-linking or chain-extending the elastomer said monomer is selected from the metal salt of an unsaturated carboxylic acid and a polyol ester or anhydride of a polybasic unsaturated carboxylic acid and not less than 135 parts of an inert filler, the composition being cured and having a Shore hardness of not less than 60° and being characterized by not requiring freezing in order to wind an elastomeric thread around the center to form a golf ball core.
Claim 12
Dependent Claim
21 words
A composition according to claim 9 in which the inert filler is present at about 135 parts to about 300 parts.
Claim 13
Dependent Claim
24 words
A composition according to claim 9 in which the elastomer consists wholly of polybutadiene having a cis-content of not less than 96% by weight.
Claim 14
Dependent Claim
12 words
A composition according to claim 9 and including a silane coupling agent.
Claim 15
Dependent Claim
99 words
A golf ball center composition comprising by weight 100 parts of a cis-polybutadiene elastomer having a cis-content of not less that 80%, not more than 25 parts of a monomer which is a metal salt of an unsaturated carboxylic acid and which is capable of grafting, cross-linking or chain-extending the elastomer and not less than 135 parts of an inert filler, the composition being cured and having a Shore C hardness of not less than 60° and being characterized by not requiring freezing in order to wind an elastomer thread around the center to form a golf ball core.
Claim 16
Dependent Claim
99 words
A golf ball center composition comprising by weight 100 parts of a cis-polybutadiene elastomer having a cis-content of not less that 80%, not more than 25 parts of a monomer which is a metal salt of an unsaturated carboxylic acid and which is capable of grafting, cross-linking or chain-extending the elastomer and not less than 135 parts of an inert filler, the composition being cured and having a Shore C hardness of not less than 60° and being characterized by not requiring freezing in order to wind an elastomer thread around the center to form a golf ball core.
Claim 17
Dependent Claim
16 words
The composition of claim 9 wherein the monomer is methacrylic acid or the zinc salt thereof.
Claim 18
Dependent Claim
16 words
The composition of claim 13 wherein the monomer is methacrylic acid or the zinc salt thereof.
Claim 19
Dependent Claim
10 words
The composition of claim 1 wherein the filler is barytes.
Claim 20
Dependent Claim
10 words
The composition of claim 9 wherein the filler is barytes.
Claim 21
Dependent Claim
10 words
The composition of claim 1 wherein the filler is barytes.
Claim 22
Dependent Claim
14 words
The golf ball of claim 1 wherein the elastic thread is a double thread.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |