US3425113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite sheet structures with internal passages by roll bonding
Assignee: Reynolds Metals Co
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Filing: 1966-09-21
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Granted: 1969-02-04
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Expires: 1986-09-21
Abstract
No abstract record available.
Inventors
- 👤 Bennie R Ward Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:16
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD OF MAKING THIN-WALLED TUBE COMPRISING BRINGING TOGETHER IN FACING RELATIONSHIP A SUBSTANTIALLY TRANSVERSELY CORRUGATED SHEET AND A SECOND SHEET SO AS TO HAVE CONCAVITIES OF THE CORRUGATED SHET CONTACT THE FACE OF THE OTHER SHEET, AND PASSING THE TWO SHEETS THROUGH A ROLLING MILL COMPRISING ONE SUBSTANTIALLY TRANSVERSELY RIBBED ROLLER AND A SECOND COOPERATING ROLLER SO AS TO HAVE THE RIBBED ROLLER ENGAGE THE CONCAVITIES OF THE CORRUGATED SHEET AND THE COOPERATING ROLLER ENGAGE THE SECOND SHEET, THE TWO ROLLERS BEING SPACED APART SUCH THAT THE MINIMUM SPACING BETWEEN THE RIB SURFACES AND THE COOPERATING SURFACE OF THE SECOND ROLLER IS LESS THAN THE ORIGINAL THICKNESS OF THE MATERIAL OF THE TWO SHEETS SO AS TO REDUCE THE
Claim 2
Independent Claim
120 words
A METHOD OF MAKING THIN-WALLED TUBE COMPRISING BRINGING TOGETHER IN FACING RELATIONSHIP A SUBSTANTIALLY TRANSVERSELY CORRUGATED SHEET AND A SECOND SHEET SO AS TO HAVE CONCAVITIES OF THE CORRUGATED SHET CONTACT THE FACE OF THE OTHER SHEET, AND PASSING THE TWO SHEETS THROUGH A ROLLING MILL COMPRISING ONE SUBSTANTIALLY TRANSVERSELY RIBBED ROLLER AND A SECOND COOPERATING ROLLER SO AS TO HAVE THE RIBBED ROLLER ENGAGE THE CONCAVITIES OF THE CORRUGATED SHEET AND THE COOPERATING ROLLER ENGAGE THE SECOND SHEET, THE TWO ROLLERS BEING SPACED APART SUCH THAT THE MINIMUM SPACING BETWEEN THE RIB SURFACES AND THE COOPERATING SURFACE OF THE SECOND ROLLER IS LESS THAN THE ORIGINAL THICKNESS OF THE MATERIAL OF THE TWO SHEETS SO AS TO REDUCE THE
References Cited (Backward Citations)
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Cited
CA696360A
Cited
US2554185A
Cited
US2779086A
Cited
US3158181A
Cited
US3194308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |