US3189490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for quenching pipe
Assignee: United States Steel Corp
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Filing: 1962-11-05
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Granted: 1965-06-15
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 James A Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:34
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/667
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
THE PROCESS OF SPRAY QUENCHING PIPE SECTIONS EMERGING SUCCESSIVELY FROM A FURNACE, SAID PROCESS BEING ADAPTED TO REDUCE THE PROPENSITY FOR TRAILING END CRACKING OF THE PIPE DUE TO SPRAY ENTERING INTERNALLY OF THE PIPE BEFORE THE TRAILING END OF THE PIEP HAS HAD EXTENDED QUENCHING, SAID PROCESS COMPRSING MOVING A PIPE SECTION WITH RESPECT TO A QUENCHING SPRAY, THEN MOVING THE QUENCHING SPRAY A SUBSTANTIAL DISTANCE IN THE DIRECTION OF PIPE TRAVEL AS THE TRAILING END OF THE PIPE APPROACHES THE QUENCHING
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |