US2870499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exothermic reaction mixture and method of cast welding a copper base alloy utilizing same
Assignee: Erico International Corp
•
Filing: 1957-08-26
•
Granted: 1959-01-27
•
Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Donald J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:44
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/34; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49393
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
THE METHOD OF CAST WELDING TOGETHER THE OPPOSED ENDS OF TWO STRANDED COPPER CONDUCTOR CABLES WHICH COMPRISES PRODUCING A SMALL CHARGE OF MOLTEN COPPER BY AN EXOTHERMIC REACTION, ALLOYING FROM ABOUT 1/2% TO ABOUT 10% TIN THEREWITH, BY WEIGHT OF THE TOTAL ALLOY, DROPPING A PORTION OF SUCH MOLTEN ALLOY AGAINST SUCH OPPOSED CABLE ENDS TO PRE-HEAT THE SAME WITH SUCH PORTION CONTINUING DOWNWARDLY PAST SUCH ENDS TO SOLIDIFY IN A REGION SUBSTANTIALLY SPACED THEREFROM, DROPPING A FURTHER PORTION OF SUCH MOLTEN ALLOY CLOSELY FOLLOWING SUCH FIRST PORTION AGAINST SUCH PRE-HEATED CABLE ENDS CONFINED IN A MOLD CLOSELY EMBRACING THE SAME, WHEREBY SUCH FURTHER PORTION OF SUCH ALLOY WILL FLOW A SHORT DISTANCE ALONG THE
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |