US4244855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid golf ball center
Assignee: Abbott Laboratories
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Filing: 1978-09-26
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Granted: 1981-01-13
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Expires: 1998-09-26
Abstract
Abstract Radial block copolymers of the butadiene-styrene type are utilized in an uncured state to form a core wall for a liquid golf ball center which permits rapid production with better size and weight control than is currently available. The golf ball core wall containing the radial block copolymers can be formulated to obtain the specific properties desired by a particular manufacturer and can be manufactured at a lower cost than those presently available.
Inventors
- 👤 Alvon R. Cox
- 👤 Thomas A. Molyneaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:18
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/02; A63B37/08; A63B37/0003; A63B37/005; A63B37/0051; A63B37/0052; A63B37/006; A63B37/0066; A63B37/007; A63B37/0077; A63B37/0094; A63B2037/085
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
105 words
A liquid golf ball center having a substantially spherical form and capable of being injection molded with precise size and weight control comprising: (a) a substantially spherical core wall comprising: (i) a noncross-linked and uncured, butadiene-styrene radial block copolymer having a butadiene content in the range of about 60% to 80% by weight and a styrene content in the range of about 20% to 40% by weight; and (ii) a filler material; and (b) a liquid center; said filler material composing at least one-half by weight of said golf ball core wall and said radial block copolymer having a molecular weight of at least 150,000.
Claim 2
Dependent Claim
105 words
A liquid golf ball center having a substantially spherical form and capable of being injection molded with precise size and weight control comprising: (a) a substantially spherical core wall comprising: (i) a noncross-linked and uncured, butadiene-styrene radial block copolymer having a butadiene content in the range of about 60% to 80% by weight and a styrene content in the range of about 20% to 40% by weight; and (ii) a filler material; and (b) a liquid center; said filler material composing at least one-half by weight of said golf ball core wall and said radial block copolymer having a molecular weight of at least 150,000.
Claim 3
Dependent Claim
22 words
The liquid golf ball center as defined in claim 1 wherein said core wall further includes an extender composed of an oil.
Claim 4
Dependent Claim
27 words
The liquid golf ball center as defined in claim 1 wherein said core wall has a thickness in the range of about 0.090 inch to 0.140 inch.
Claim 5
Dependent Claim
31 words
The liquid golf ball center as defined in claim 1 wherein said filler material is present in the range of about 60% to about 80% by weight of the core wall.
Claim 6
Dependent Claim
32 words
The liquid golf ball center as defined in claim 2 wherein said extender is present in an amount in the range of about 5% to 20% by weight of the core wall.
Claim 7
Dependent Claim
25 words
The liquid golf ball center as defined in claim 2 wherein said liquid is represented by a mixture of water and glycerine or polyethylene glycol.
Claim 8
Dependent Claim
17 words
The liquid golf ball center as defined in claim 4 wherein said filler material is barium sulfate.
Claim 9
Dependent Claim
23 words
The liquid golf ball center as defined in claim 1 wherein the butadiene-styrene radial block copolymer has a molecular weight of about 300,000.
Claim 10
Dependent Claim
27 words
The liquid golf ball center as defined in claim 8 wherein said copolymer has a butadiene content of about 70% and a styrene content of about 30%.
Claim 11
Dependent Claim
74 words
The liquid golf ball center as defined in claim 1 wherein the buadiene-styrene radial block copolymer has a molecular weight of abut 160,000 and further including an additional butadiene-styrene radial block copolymer having a butadiene content in the range of about 60% to 80% by weight and a styrene content in the range of about 20% to 40% by weight and a molecular weight of about 150,000, and said copolymers having different butadiene-styrene amounts.
Claim 12
Dependent Claim
18 words
The liquid golf ball center as defined in claim 10 wherein said copolymers are present in equal amounts.
Claim 13
Dependent Claim
18 words
The liquid golf ball center as defined in claim 10 wherein said copolymers are present in different amounts.
Claim 14
Dependent Claim
28 words
The liquid golf ball center as defined in claim 12 wherein said copolymer having a molecular weight of about 160,000 is present in a larger amount by weight.
Claim 15
Dependent Claim
52 words
The liquid golf ball center as defined in claim 10 wherein said copolymer having a molecular weight of 160,000 is present in an amount of 50 to 75 parts by weight and said copolymer having a molecular weight of 150,000 is present in an amount of 50 to 25 parts by weight.
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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) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |