Patent US5040960A successfully refreshed from Google Patents.
Patent US4131277A successfully refreshed from Google Patents.
US4131277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bowling ball
Assignee: Individual
•
Filing: 1977-11-14
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Granted: 1978-12-26
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Expires: 1997-11-14
Abstract
Abstract A bowling ball has a surface made from a material containing a minor quantity of functionally terminated liquid elastomer combined with a major quantity of resin-forming material reactive with the functional end groups of the elastomer, and has a greatly enhanced coefficient of friction against ordinary bowling lane surfaces, permitting superior control of the path of the ball and therefore better scores by the bowler. Such surface compositions are preferably made from a liquid polyester resin of the type which is hardenable by a peroxide, with addition of a liquid vinyl-terminated diene polymer or copolymer in a quantity amounting to about 10% to 35% of the mixture.
Inventors
- 👤 John L. Randolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:06
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0001; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
30 words
A bowling ball, the surface of which is composed of a matrix of hard, strong resin resistant to impact, containing domains of elastomeric material chemically bonded to the surrounding matrix.
Claim 2
Dependent Claim
30 words
A bowling ball, the surface of which is composed of a matrix of hard, strong resin resistant to impact, containing domains of elastomeric material chemically bonded to the surrounding matrix.
Claim 3
Dependent Claim
26 words
A ball as in claim 1, in which the matrix is 60% to 95% of the surface material and the elastomer domains are 5% to 40%.
Claim 4
Dependent Claim
28 words
A ball as in claim 1 in which the matrix is a polyester resin and the domains of elastomeric material are bonded to the matrix by vinyl groups.
Claim 5
Dependent Claim
37 words
A ball as in claim 3 in which the surface is the set product of the catalyzed reaction of a major proportion of an unsaturated polyester resin and a minor proportion of a vinyl terminated liquid elastomer.
Claim 6
Dependent Claim
19 words
A ball as in claim 1, containing a core of a different density from that of the surface material.
Claim 7
Dependent Claim
22 words
A ball as in claim 5, in which the core has a shape rounded at one end and flat at the other.
Claim 8
Dependent Claim
60 words
A process of making a bowling ball of high hardness and high coefficient of friction which comprises mixing a liquid settable to a hard resin resistant to impact, with a functionally terminated liquid elastomer settable under the same influence, which materials are at least partially mutually soluble, and causing the mixture to set on the surface of a bowling ball.
Claim 9
Dependent Claim
60 words
A process of making a bowling ball of high hardness and high coefficient of friction which comprises mixing a liquid settable to a hard resin resistant to impact, with a functionally terminated liquid elastomer settable under the same influence, which materials are at least partially mutually soluble, and causing the mixture to set on the surface of a bowling ball.
Claim 10
Dependent Claim
26 words
A process as in claim 7 in which the liquid settable to a hard resin is an unsaturated polyester, and the liquid elastomer is vinyl terminated.
Claim 11
Dependent Claim
28 words
A process as in claim 8 in which the polyester is 60% to 95% of the mix and the liquid elastomer is 5% to 40% of the mix.
Claim 12
Dependent Claim
19 words
A process as in claim 9 in which the set surface material is reduced to an accurate spherical shape.
References Cited (Backward Citations)
US3256018A
Cited
US3206201A
Cited
US3248113A
Cited
US3350252A
Cited
US3703571A
Cited
US3865369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |