US3356528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for diffusion coating of metals in coiled strips
Assignee: Colvilles Ltd
•
Filing: 1963-11-14
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Granted: 1967-12-05
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Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 Gibson Thomas
- 👤 William R Mcadam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:17
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/68; C21D1/70; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/36; C23C10/38; C23C10/40; C23C8/00; C23C8/60; C23C8/62; C23C8/64; C23C8/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A PROCESS FOR TREATING THE SURFACE OF A FLEXIBLE METAL STRIP, COMPRISING CO-WINDING THE STRIP WITH ELONGATE FLEXIBLE SPACING MEANS TO FORM INTERLEAVED COILS SO THAT THE TURNS OF THE METAL COIL ARE HELD SUBSTANTIALLY UNIFORMLY SPACED FROM ONE ANOTHER BY THE TURNS OF THE COILED SPACING MEANS, EXTERNALLY BINDING THE METAL COIL BY A FLEXIBLE BAND TO PREVENT SELF-UNWINDING OF THE METAL COIL, SETTING THE BOUND METAL COIL ON END, PACKING TREATING MEDIUM THROUGH THE UPPERMOST END, CLOSING SAID UPPERMOST END, INVERTING THE BOUND METAL COIL, PACKING TREATING MEDIUM THROUGH THE NOW UPPERMOST END, REMOVING THE SPACING MEANS FROM THE METAL COIL, AND HEATING THE COATED COIL.
Claim 2
Dependent Claim
108 words
A PROCESS FOR TREATING THE SURFACE OF A FLEXIBLE METAL STRIP, COMPRISING CO-WINDING THE STRIP WITH ELONGATE FLEXIBLE SPACING MEANS TO FORM INTERLEAVED COILS SO THAT THE TURNS OF THE METAL COIL ARE HELD SUBSTANTIALLY UNIFORMLY SPACED FROM ONE ANOTHER BY THE TURNS OF THE COILED SPACING MEANS, EXTERNALLY BINDING THE METAL COIL BY A FLEXIBLE BAND TO PREVENT SELF-UNWINDING OF THE METAL COIL, SETTING THE BOUND METAL COIL ON END, PACKING TREATING MEDIUM THROUGH THE UPPERMOST END, CLOSING SAID UPPERMOST END, INVERTING THE BOUND METAL COIL, PACKING TREATING MEDIUM THROUGH THE NOW UPPERMOST END, REMOVING THE SPACING MEANS FROM THE METAL COIL, AND HEATING THE COATED COIL.
Claim 3
Dependent Claim
171 words
APPARATUS FOR USE IN TREATING THE SURFACE OF FLEXIBLE METAL STRIP WITH A TREATING MEDIUM, COMPRISING A BOBBIN FOR USE IN WINDING THE STRIP INTO A COIL AND HAVING A CORE AND CIRCULAR END PLATES DETACHABLE FROM THE CORE TO ENABLE ENDWISE PACKING OF THE COIL WITH TREATING MEDIUM, AN OPEN ENDED CYLINDRICAL WALL HAVING A DIMAETER LESS THAN SAID CIRCULAR END PLATES AND A LENGTH GREATER THAN THE SUM OF THE AXIAL LENGTH OF THE BOBBIN AND THE THICKNESS OF ONE OF SAID END PLATES, THE CYLINDRICAL WALL BEING ARRANGED, ON THE REMOVAL OF ONE END PLATE, TO SIT ON THE OTHER END PLATE AND SURROUND THE COIL OF STRIP AND A CYLINDRICAL CONTAINER HAVING A DIAMETER GREATER THAN SAID END PLATES AND A LENGTH EQUAL TO THE SUM OF THE LENGTH OF SAID CYLINDRICAL WALL AND THE THICKNESS OF ONE OF SAID END PLATES, SAID CONTAINER SERVING TO CLOSE THE OPEN TOP OF THE ENCIRCLED COIL TO ENABLE INVERSION OF THE COIL DURING PACKING WITHOUT LOSS OF TREATING MATERIAL.
Claim 4
Dependent Claim
171 words
APPARATUS FOR USE IN TREATING THE SURFACE OF FLEXIBLE METAL STRIP WITH A TREATING MEDIUM, COMPRISING A BOBBIN FOR USE IN WINDING THE STRIP INTO A COIL AND HAVING A CORE AND CIRCULAR END PLATES DETACHABLE FROM THE CORE TO ENABLE ENDWISE PACKING OF THE COIL WITH TREATING MEDIUM, AN OPEN ENDED CYLINDRICAL WALL HAVING A DIMAETER LESS THAN SAID CIRCULAR END PLATES AND A LENGTH GREATER THAN THE SUM OF THE AXIAL LENGTH OF THE BOBBIN AND THE THICKNESS OF ONE OF SAID END PLATES, THE CYLINDRICAL WALL BEING ARRANGED, ON THE REMOVAL OF ONE END PLATE, TO SIT ON THE OTHER END PLATE AND SURROUND THE COIL OF STRIP AND A CYLINDRICAL CONTAINER HAVING A DIAMETER GREATER THAN SAID END PLATES AND A LENGTH EQUAL TO THE SUM OF THE LENGTH OF SAID CYLINDRICAL WALL AND THE THICKNESS OF ONE OF SAID END PLATES, SAID CONTAINER SERVING TO CLOSE THE OPEN TOP OF THE ENCIRCLED COIL TO ENABLE INVERSION OF THE COIL DURING PACKING WITHOUT LOSS OF TREATING MATERIAL.
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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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |