Patent US4149720A successfully refreshed from Google Patents.
US4149720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball and method of making same
Assignee: Lannom Manufacturing Co Inc
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Filing: 1977-09-01
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Granted: 1979-04-17
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Expires: 1997-09-01
Abstract
Abstract A ball is disclosed formed with a spherical core of polyurethane foam covered with a thin winding of cotton yarn and with a hand stitched outer cover; the ball is formed in a mold by providing a polymeric isocyanate with a mixture of water and a polyol crosslinking catalyst with the ratio between the isocyanate and the mixture of the catalyst and the water being variable to provide a ball of desired weight, resilience and density so that the ball formed by the method can duplicate such characteristics as found in regulation baseballs and softballs, for example.
Inventors
- 👤 Jesse H. Heald, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:28
CPC Classifications
A; A63; A63B; A63B37/00; B; B29; B29D; B29D99/00; B29D99/0042; A63B37/12; A63B2037/125; B29L; B29L2031/00; B29L2031/54; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A composite ball having the rebound, size, weight, appearance and physical characteristics and dimensions of a regulation baseball, said ball comprising a spherical core portion formed of flexible and resilient polyurethane foam and a cover portion enclosing said core, wherein said core portion is formed isocyanate and a mixture of catalyst and blowing agent in which the ratio of isocyanate to the mixture of catalyst and blowing agent is 0.377 with the total weight of the isocyanate and mixture of catalyst and blowing agent being 122 grams so as to provide a ball having essentially the same rebound qualities as a regulation baseball.
Claim 2
Dependent Claim
103 words
A composite ball having the rebound, size, weight, appearance and physical characteristics and dimensions of a regulation baseball, said ball comprising a spherical core portion formed of flexible and resilient polyurethane foam and a cover portion enclosing said core, wherein said core portion is formed isocyanate and a mixture of catalyst and blowing agent in which the ratio of isocyanate to the mixture of catalyst and blowing agent is 0.377 with the total weight of the isocyanate and mixture of catalyst and blowing agent being 122 grams so as to provide a ball having essentially the same rebound qualities as a regulation baseball.
Claim 3
Dependent Claim
18 words
The invention of claim 1 wherein said cover portion comprises a leather member stitched over said core portion.
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |