US4295652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf ball
Assignee: Bridgestone Corp
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Filing: 1980-02-08
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Granted: 1981-10-20
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Expires: 2000-02-08
Abstract
Abstract A golf ball having a thread-wound core and a cover formed of a block copolyetherester comprising (A) a terephthalic acid unit, (B) a 1,4-butanediol unit, (C) a unit of a dicarboxylic acid, other than terephthalic acid, or a short-chain diol, other than 1,4-butanediol, having a number-average molecular weight of not more than 300 and (D) a poly(alkylene oxide)glycol unit having a number-average molecular weight of from 500 to 3000. Said golf ball exhibits excellent impact resilience and also exhibits good cutting resistance and "click".
Inventors
- 👤 Tasuku Saito
- 👤 Tutomu Noma
- 👤 Tsutomu Matsunaga
- 👤 Nagayoshi Naito
- 👤 Chiaki Tanaka
- 👤 Motoki Hiratsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/12; A63B37/0003; A63B37/005; A63B37/0051; A63B37/0053; A63B37/007; A63B37/0072; A63B37/0074
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A golf ball comprising a thread-wound central core and an outer cover for the core, said cover being formed of, as a main ingredient, a block copolyetherester comprising (A) a terephthalic acid unit, (B) a 1,4-butanediol unit, (C) a unit of a dicarboxylic acid, other than terephthalic acid, or a short-chain diol, other than 1,4-butanediol, having a number-average molecular weight of not more than 300 and (D) a poly(alkylene oxide) glycol unit having a number-average molecular weight of from 500 to 3000, the amount of the component (C), being 25/75 through 60/40 in terms of mol ratio to either component (A) or (B), and the amount of the component (D) being 35 through 70% by weight based on the total weight of the copolymer.
Claim 2
Dependent Claim
124 words
A golf ball comprising a thread-wound central core and an outer cover for the core, said cover being formed of, as a main ingredient, a block copolyetherester comprising (A) a terephthalic acid unit, (B) a 1,4-butanediol unit, (C) a unit of a dicarboxylic acid, other than terephthalic acid, or a short-chain diol, other than 1,4-butanediol, having a number-average molecular weight of not more than 300 and (D) a poly(alkylene oxide) glycol unit having a number-average molecular weight of from 500 to 3000, the amount of the component (C), being 25/75 through 60/40 in terms of mol ratio to either component (A) or (B), and the amount of the component (D) being 35 through 70% by weight based on the total weight of the copolymer.
Claim 3
Dependent Claim
39 words
A golf ball as claimed in claim 1, wherein said dicarboxylic acid, other than terephthalic acid, is selected from the group consisting of isophthalic acid, phthalic acid, naphthalene-2,6-dicarboxylic acid, naphthalene-2,7-dicarboxylic acid, diphenyl-4,4'-dicarboxylic acid, diphenoxyethane dicarboxylic acid and 5-sulfoisophthalic acid.
Claim 4
Dependent Claim
39 words
A golf ball as claimed in claim 1, wherein said dicarboxylic acid, other than terephthalic acid, is selected from the group consisting of 1,4-cyclohexane dicarboxylic acid, succinic acid, oxalic acid, adipic acid, sebacic acid, dodecanoic acid and dimer acid.
Claim 5
Dependent Claim
34 words
A golf ball as claimed in claim 1, wherein said diol, other than 1,4-butanediol, is selected from the group consisting of ethylene glycol, trimethylene glycol, pentamethylene glycol, hexamethylene glycol, neopentyl glycol and decamethylene glycol.
Claim 6
Dependent Claim
28 words
A golf ball as claimed in claim 1, wherein said diol, other than 1,4-butanediol, is selected from the group consisting of 1,1-cyclohexane dimethanol, 1,4-cyclohexane dimethanol and tricyclodecane dimethanol.
Claim 7
Dependent Claim
29 words
A golf ball as claimed in claim 1, wherein said diol, other than 1,4-butanediol, is selected from the group consisting of xylylene glycol, bis(p-hydroxy)diphenyl, bis(p-hydroxyphenyl)propane, 2,2-bis[4-(2-hydroxyethoxy)phenyl]propane, bis[4-(2-hydroxy)phenyl]sulfone and 1,1-bis[4-(2-hydroxyethoxy)phenyl]cyclohexane.
Claim 8
Dependent Claim
40 words
A golf ball as claimed in claim 1, wherein said poly(alkylene oxide)glycol unit is derived from polyethylene glycol, poly(1,2-propylene oxide)glycol, poly(1,3-propylene oxide)glycol, poly(tetramethylene oxide)glycol, a copolymer of ethylene oxide and propylene oxide and a copolymer of ethylene oxide and tetrahydrofuran.
References Cited (Backward Citations)
US3940146A
Cited
US3784520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |