US3248775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a rubber covered roll
Assignee: United States Steel Corp
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Filing: 1965-02-05
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Granted: 1966-05-03
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Expires: 1985-02-05
Abstract
No abstract record available.
Inventors
- 👤 Harry C Morrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/07; B65G39/071; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/4956; Y10T29/49563
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF MAKING A ROTATABLE ROLL HAVING A PREFORMED RUBBER COVERING SURROUNDING A METAL SHELL, WHICH METHOD COMPRISES PROVIDING A MANDREL HAVING THE SAME DIAMETER AS THE METAL SHELL AND A LENGTH AT LEAST AS LONG AS THE METAL SHELL, PLACING THE RUBBER AROUND THE MANDREL TO THE DESIRED THICKNESS, VULCANIZING SAID RUBBER, MACHING THE SURFACE OF SAID RUBBER, FORMING
Claim 2
Independent Claim
61 words
THE METHOD OF MAKING A ROTATABLE ROLL HAVING A PREFORMED RUBBER COVERING SURROUNDING A METAL SHELL, WHICH METHOD COMPRISES PROVIDING A MANDREL HAVING THE SAME DIAMETER AS THE METAL SHELL AND A LENGTH AT LEAST AS LONG AS THE METAL SHELL, PLACING THE RUBBER AROUND THE MANDREL TO THE DESIRED THICKNESS, VULCANIZING SAID RUBBER, MACHING THE SURFACE OF SAID RUBBER, FORMING
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |