US3149415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing welded bimetallic tubular connections
Assignee: Aurousseau and Cie Ets
•
Filing: 1959-06-01
•
Granted: 1964-09-22
•
Expires: 1979-06-01
Abstract
No abstract record available.
Inventors
- 👤 Hyver Rene Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:56
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD FOR PRODUCING A BIMETALLIC TUBULAR MEMBER COMPRISING IN: (A) POSITIONING EACH OF A COPPER SLUG AND AN ALUMINIUM SLUG IN A RESPECTIVE FRUSTO-CONICAL CHAMBER IN A RESPECTIVE STEEL BLOCK, EACH SAID CHAMBER BEING AN OUTWARDLY OPENING RECESS IN THE SURFACE OF ITS RESPECTIVE BLOCK, EACH OF SAID SLUGS INITIALLY FILLING THE MAJOR PORTION OF ITS RESPECTIVE CHAMBER AND EXTENDING A SHORT DISTANCE BEYOND SAID SURFACE OF ITS RESPECTIVE BLOCK; (B) BRINGING OPPOSING ENDS OF SAID SLUGS ABRUPTLY TOGETHER TO COLD WELD THE ABUTTING SURFACES TOGETHER; (C) REMOVING THE WELDED PARTS FROM SAID BLOCKS; (D) POSITIONING SAME SO THAT THEY EXTEND LONGITUDINALLY OF THE CYLINDRICAL OPENING IN A DIE; AND (E) BY MEANS OF A CYLINDRICAL PUNCH, COLD EXTRUDING THE WELDED PARTS TO FORM A TUBULAR SECTION OF ALUMINIUM CONNECTED AT ONE END PORTION TO A TUBULAR SECTION OF COPPER BY SAID WELDING.
Claim 2
Independent Claim
144 words
A METHOD FOR PRODUCING A BIMETALLIC TUBULAR MEMBER COMPRISING IN: (A) POSITIONING EACH OF A COPPER SLUG AND AN ALUMINIUM SLUG IN A RESPECTIVE FRUSTO-CONICAL CHAMBER IN A RESPECTIVE STEEL BLOCK, EACH SAID CHAMBER BEING AN OUTWARDLY OPENING RECESS IN THE SURFACE OF ITS RESPECTIVE BLOCK, EACH OF SAID SLUGS INITIALLY FILLING THE MAJOR PORTION OF ITS RESPECTIVE CHAMBER AND EXTENDING A SHORT DISTANCE BEYOND SAID SURFACE OF ITS RESPECTIVE BLOCK; (B) BRINGING OPPOSING ENDS OF SAID SLUGS ABRUPTLY TOGETHER TO COLD WELD THE ABUTTING SURFACES TOGETHER; (C) REMOVING THE WELDED PARTS FROM SAID BLOCKS; (D) POSITIONING SAME SO THAT THEY EXTEND LONGITUDINALLY OF THE CYLINDRICAL OPENING IN A DIE; AND (E) BY MEANS OF A CYLINDRICAL PUNCH, COLD EXTRUDING THE WELDED PARTS TO FORM A TUBULAR SECTION OF ALUMINIUM CONNECTED AT ONE END PORTION TO A TUBULAR SECTION OF COPPER BY SAID WELDING.
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |