US4248432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf ball
Assignee: Goodrich Corp
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Filing: 1979-07-16
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Granted: 1981-02-03
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Expires: 1999-07-16
Abstract
Abstract Golf balls are provided having a thermoplastic polyesterurethane cover comprising the reaction product of a polyester having a molecular weight from about 800 to 1500 reacted with para-phenylene diisocyanate or 1,4-cyclohexane diisocyanate, which is thereafter molded around a golf ball core.
Inventors
- 👤 Larry E. Hewitt
- 👤 David T. Popovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:21
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0023; A63B37/0029; A63B37/0036; A63B37/005; A63B37/0051; A63B37/0052; A63B37/007; A63B37/0072; A63B37/0075; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/75; C08G18/751; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
85 words
A golf ball comprising a core and a polyesterurethane cover comprising the reaction product of a polyester of an aliphatic diol containing 2 to 8 carbon atoms and an aliphatic dicarboxylic acid containing 4 to 8 carbon atoms, said polyester having a molecular weight of about 800 to about 1500, reacted with para-phenylene diisocyanate or 1,4-cyclohexane diisocyanate in a molar ratio of 0.98 1.01 mols of diisocyanate per mol of polyester, said polyester-urethane having a melt index in the range of about 15 to 50.
Claim 2
Dependent Claim
85 words
A golf ball comprising a core and a polyesterurethane cover comprising the reaction product of a polyester of an aliphatic diol containing 2 to 8 carbon atoms and an aliphatic dicarboxylic acid containing 4 to 8 carbon atoms, said polyester having a molecular weight of about 800 to about 1500, reacted with para-phenylene diisocyanate or 1,4-cyclohexane diisocyanate in a molar ratio of 0.98 1.01 mols of diisocyanate per mol of polyester, said polyester-urethane having a melt index in the range of about 15 to 50.
Claim 3
Dependent Claim
38 words
A golf ball of claim 1 wherein said glycol and acid contains 4 to 6 carbon atoms, the polyester molecular weight is about 850 to 1,00, and the molar ratio of diisocyanate to polyester is 0.98 to 1.01.
Claim 4
Dependent Claim
29 words
A composition of claim 2 wherein the dicarboxylic acid is adipic acid, the diisocyanate is para-phenylene diisocyanate and the molar ratio of diisocyanate to polyester is 0.98 to 1.0.
Claim 5
Dependent Claim
37 words
A golf ball of claim 3 wherein said polyester is poly(tetramethylene adipate) having a molecular weight in the range of about 900 to 1,050 and the melt index is in the range of about 15 to 25.
Claim 6
Dependent Claim
31 words
A golf ball of claim 1 wherein said golf ball is a three piece golf ball comprising a liquid or solid center, rubber winding and said polyesterurethane as a cover therefor.
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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |