US3572722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Play balls
Assignee: Dunlop Co Ltd
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Filing: 1967-07-05
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Granted: 1971-03-30
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Expires: 1987-07-05
Abstract
Abstract A playball comprising a blend of rubber and a thermoplastic homopolymer of a styrene or substituted styrene, or a thermoplastic copolymer, terpolymer or interpolymer of a styrene or substituted styrene with (i) acrylonitrile or substituted acrylonitrile and/or (ii) an alkyl ester of acrylic or methacrylic acid and/or (iii) a diene, the rubber being present in the blend in an amount of from 10 percent to 90 percent by weight of the blend. The diene is preferably butadiene or isoprene.
Inventors
- 👤 Stanley R Harrison
- 👤 Robert M Broughton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:31
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0042; A; A63; A63B; A63B37/00; A63B37/0003; A63B37/005; A63B37/0051; A63B37/007; A63B37/0072; A63B37/0073; B29K; B29K2009/00; B29K2025/00; B29K2033/00; B29K2033/04; B29K2033/18; B29K2033/20; B29L; B29L2031/00; B29L2031/54
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
A solid molded goLf ball of a composition providing the gravity, click, rebound and size required for a golf ball comprising a polymer blend consisting essentially of rubber selected from the group consisting of natural rubber, polybutadiene, copolymers of butadiene with styrene or acrylonitrile, polybutylene, copolymers of ethylene with propylene or higher alpha-olefins, polyisoprene and polychloroprene and a thermoplastic polymer selected from the group consisting of: i. a homopolymer of styrene; ii. a homopolymer of substituted styrene; iii. a copolymer of a styrene and an acrylonitrile; iv. a copolymer of a styrene with an alkyl ester of acrylic or methacrylic acid; v. a copolymer of a styrene with a diene, and vi. a terpolymer or interpolymer of a styrene with at least two co-monomers selected from the following: a. an acrylonitrile; b. an alkyl ester of acrylic or methacrylic acid, and c. a diene; said rubber being present in said blend in an amount of from 10 percent to 90 percent by weight of said blend.
Claim 2
Dependent Claim
166 words
A solid molded goLf ball of a composition providing the gravity, click, rebound and size required for a golf ball comprising a polymer blend consisting essentially of rubber selected from the group consisting of natural rubber, polybutadiene, copolymers of butadiene with styrene or acrylonitrile, polybutylene, copolymers of ethylene with propylene or higher alpha-olefins, polyisoprene and polychloroprene and a thermoplastic polymer selected from the group consisting of: i. a homopolymer of styrene; ii. a homopolymer of substituted styrene; iii. a copolymer of a styrene and an acrylonitrile; iv. a copolymer of a styrene with an alkyl ester of acrylic or methacrylic acid; v. a copolymer of a styrene with a diene, and vi. a terpolymer or interpolymer of a styrene with at least two co-monomers selected from the following: a. an acrylonitrile; b. an alkyl ester of acrylic or methacrylic acid, and c. a diene; said rubber being present in said blend in an amount of from 10 percent to 90 percent by weight of said blend.
Claim 3
Dependent Claim
24 words
A golf ball according to claim 1, which consists of a core consisting essentially of the blend of claim 1, encased in a cover.
Claim 4
Dependent Claim
31 words
A golf ball according to claim 2, in which the core consists of at least two portions at least one of which consists essentially of the blend defined in claim 1.
Claim 5
Dependent Claim
28 words
A golf ball according to claim 1, in which the rubber is present in an amount of from 60 percent to 80 percent by weight of the blend.
Claim 6
Dependent Claim
14 words
A golf ball according to claim 1, in which the rubber is a cis-polybutadiene.
Claim 7
Dependent Claim
25 words
A golf ball according to claim 5, in which the rubber is a blend of cis-polybutadiene with natural rubber and/or at least one synthetic rubbers.
Claim 8
Dependent Claim
20 words
A golf ball according to claim 1, in which the rubber is a copolymer of butadiene with styrene or acrylonitrile.
Claim 9
Dependent Claim
16 words
A golf ball according to claim 1, in which the rubber is polybutylene, polychloroprene or polyisoprene.
Claim 10
Dependent Claim
24 words
A golf ball according to claim 1, in which the rubber is an elastomeric copolymer of ethylene with propylene or with a higher alpha-olefine.
Claim 11
Dependent Claim
15 words
A golf ball according to claim 1, in which the diene is butadiene or isoprene.
Claim 12
Dependent Claim
18 words
A golf ball according to claim 1, in which the alkyl ester of methacrylic acid is methyl methacrylate.
Claim 13
Dependent Claim
17 words
A golf ball according to claim 1, in which the interpolymer contains styrene, butadiene and methyl methacrylate.
Claim 14
Dependent Claim
16 words
A golf ball according to claim 1, in which the interpolymer contains styrene, butadiene and acrylonitrile.
References Cited (Backward Citations)
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Cited
US3129199A
Cited
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |