US3073019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making coated tubing
Assignee: Motors Liquidation Co
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Filing: 1958-06-16
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Granted: 1963-01-15
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Caplan Isadore
- 👤 Gerard T Ruflin
- 👤 Donald K Van Zile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:38
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/046; B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/09; B23; B23K; B23K1/00; B23K1/008; B23K1/08; C23C2/00; C23C2/34; C23C2/36; C23C2/38; B23K2101/00; B23K2101/04; B23K2101/06; B23K2103/00; B23K2103/02; B23K2103/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
156 words
THE METHOD OF COATING THE INTERIOR OF STEEL TUBING WITH A CORROSION-RESISTANT BRASS COATINGS DURING THE FORMATION OF SAID TUBING FROM A SUBSTANTIALLY FLAT STEEL STRIP, SAID METHOD COMPRISING THE STEPS OF LONGITUDINALLY MOVING A SUBSTANTIALLY FLAT STEEL STRIP WHILE CONTINUOUSLY TRANSVERSELY BENDING IT INTO A TUBULAR CONFIGURATION HAVING ABUTTING EDGES FORMING A SEAM, INTRODUCING ZINC INTO THE TUBING AFTER IT IS PARTIALLY FORMED, HEATING THE TUBING TO A DEGREE SUFFICIENT TO VAPORIZE SAID ZINC WITHIN THE TUBING AND CAUSE IT TO PERMEATE THE PORES OF THE STEEL ON THE INNER SURFACE OF THE TUBING, APPLYING MOLTON COPPER TO THE OUTER SURFACE OF THE TUBING SO AS TO PERMIT MIGRATION OF SAID MOLTON COPPER BETWEEN SAID ABUTTING EDGES THROUGH SAID SEAM INTO THE INTERIOR OF THE TUBING AND ALLOY WITH SAID ZINC, AND FINALLY COOLING THE TUBING SUFFICIENTLY TO CAUSE SAID ALLOYING COPPER AND ZINC TO SOLIDIFY SO AS TO FORM A CONTINUOUS NON-CORROSIVE BRASS COATING.
References Cited (Backward Citations)
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US1892607A
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |