US2575249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic rubbery article and method of making same
Assignee: Goodrich Corp
•
Filing: 1948-11-20
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Granted: 1951-11-13
•
Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
- 👤 Balfour Y Connell
- 👤 Ward E Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:42
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D30/40; Y; Y10; Y10S; Y10S152/00; Y10S152/16; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
THE METHOD OF MAKING PNEUMATIC ARTICLE RESISTANT TO AIR DIFFUSION, WHICH METHOD COMPRIESE FORMING A PLURALITY OF PLIES OF VULCANIZABLE COMPOSITION COMPRISING 100 PARTS BY WEIGHT OF A MIXTURE OF RUBBER MATERIALS CONSISTING OF 60 TO 90 PARTS BY WEIGHT OF UNVULCANIZED VULCANIZABLE CRUDE RUBBER AND 10 TO 40 PARTS BY WEIGHT OF AN UNVULCANIZED VULCANIZABLE RUBBERY COPOLYMER FO FROM 80 TO 991/2 PARTS BY WEIGHT OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM ONEHALF OF 20 PARTS BY WEIGHT OF AN OPEN-CHAIN CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS, AND A VULCANIZING AGENT FOR SAID RUBBER MATERIALS, EACH SUCCESSIVE PLY HAVING A HIGHER PERCENTAGE OF CRUDE RUBBER THEREIN THAN THE PRECEDING PLY, ASSEMBLING SAID PILES IN FACE-TO-FACE ABUTTING RELATION WITH EACH SUCCEEDING PLY OUTWARDLY FROM THE INNER PLY HAVING A HIGHER PERCENTAGE OF CRUDE RUBBER THEREIN THAN THE PERCENTAGE PLY, AND THEREAFTER VULCANIZING THE ASSEMBLY.
Claim 2
Independent Claim
152 words
THE METHOD OF MAKING PNEUMATIC ARTICLE RESISTANT TO AIR DIFFUSION, WHICH METHOD COMPRIESE FORMING A PLURALITY OF PLIES OF VULCANIZABLE COMPOSITION COMPRISING 100 PARTS BY WEIGHT OF A MIXTURE OF RUBBER MATERIALS CONSISTING OF 60 TO 90 PARTS BY WEIGHT OF UNVULCANIZED VULCANIZABLE CRUDE RUBBER AND 10 TO 40 PARTS BY WEIGHT OF AN UNVULCANIZED VULCANIZABLE RUBBERY COPOLYMER FO FROM 80 TO 991/2 PARTS BY WEIGHT OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM ONEHALF OF 20 PARTS BY WEIGHT OF AN OPEN-CHAIN CONJUGATED DIOLEFIN HAVING FROM 4 TO 8 CARBON ATOMS, AND A VULCANIZING AGENT FOR SAID RUBBER MATERIALS, EACH SUCCESSIVE PLY HAVING A HIGHER PERCENTAGE OF CRUDE RUBBER THEREIN THAN THE PRECEDING PLY, ASSEMBLING SAID PILES IN FACE-TO-FACE ABUTTING RELATION WITH EACH SUCCEEDING PLY OUTWARDLY FROM THE INNER PLY HAVING A HIGHER PERCENTAGE OF CRUDE RUBBER THEREIN THAN THE PERCENTAGE PLY, AND THEREAFTER VULCANIZING THE ASSEMBLY.
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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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |