Patent US592738A successfully refreshed from Google Patents.
US2730601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance welding machine for sheet
Assignee: Armco Inc
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Filing: 1950-11-03
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Granted: 1956-01-10
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Reed Eo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:40
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/06; B23K11/061
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
THE METHOD OF WELDING METAL SHEETS END TO END TO FORM A STRIP WHICH INCLUDES THE STEPS OF BRINGING A LEADING EDGE OF A SHEET INTO ABUTMENT WITH A TRAILING EDGE OF A PRECEDING SHEET, WHILE DEFORMING SAID LEADING AND TRAILING EDGES OUT OF THE PLANE OF SAID SHEETS, CLAMPING SAID SHEETS, ESTABLISHING A RESISTANCE WELDING CIRCUIT THROUGH SAID ABUTTING EDGES OF SAID SHEETS AND APPLYING CURRENT THERETO WHILE FORCING THEM BEACK INTO THE PLANE OF SAID SHEETS, AND MOVING SAID CIRCUIT ALONG SAID ABUTTING EDGES.
References Cited (Backward Citations)
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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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |