Patent US2880304A successfully refreshed from Google Patents.
US2880304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance welding
Assignee: Fairchild Engine and Airplane Corp
•
Filing: 1956-01-20
•
Granted: 1959-03-31
•
Expires: 1976-01-20
Abstract
No abstract record available.
Inventors
- 👤 James R Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:24
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/0093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF RESISTANCE WELDING COMPRISING THE STEPS OF ABUTTING AGAINST A SHEET OF METAL AN EDGE OF A COMPOSITE METAL PIECE FORMED BY AT LEAST ONE THIN LAYER OF A THICK IN COMPARAISON TO THE METAL LAYER, AND PASSING A HIGH DENSITY WELDING CURRENT IN SERIES THROUGH THE COMPOSITE PIECE AND THE SHEET TO WELD THEM TOGETHER AT THEIR ABUTMENT, ALL OF THE WELDING CURRENT PASSING THROUGH THE COMPOSITE PIECE IN SERIES FROM ONE OF ITS EDGES TO THE OPPOSITE EDGE, A PORTION OF THE CURRENT BEING BYPASSED THROUGH THE HIGH CONDUCTIVITY METAL LAYER OT PREVENT OVERHEATING OF THE METAL ELEMENT WHILE IS BEING WELDED TO THE METAL SHEET.
Claim 2
Independent Claim
110 words
A METHOD OF RESISTANCE WELDING COMPRISING THE STEPS OF ABUTTING AGAINST A SHEET OF METAL AN EDGE OF A COMPOSITE METAL PIECE FORMED BY AT LEAST ONE THIN LAYER OF A THICK IN COMPARAISON TO THE METAL LAYER, AND PASSING A HIGH DENSITY WELDING CURRENT IN SERIES THROUGH THE COMPOSITE PIECE AND THE SHEET TO WELD THEM TOGETHER AT THEIR ABUTMENT, ALL OF THE WELDING CURRENT PASSING THROUGH THE COMPOSITE PIECE IN SERIES FROM ONE OF ITS EDGES TO THE OPPOSITE EDGE, A PORTION OF THE CURRENT BEING BYPASSED THROUGH THE HIGH CONDUCTIVITY METAL LAYER OT PREVENT OVERHEATING OF THE METAL ELEMENT WHILE IS BEING WELDED TO THE METAL SHEET.
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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |