US3126937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming method and apparatus therefor
Assignee: General Dynamics Corp
•
Filing: 1962-02-15
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Granted: 1964-03-31
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Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 David F Brower
- 👤 P Fortescu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:47
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14; Y; Y10; Y10S; Y10S264/00; Y10S264/45; Y10T; Y10T29/00; Y10T29/49; Y10T29/49803
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF FORMING A WORK PIECE COMPRISING PASSING A CURRENT THROUGH THE WORK PIECE TO PREHEAT WITHOUT FORMING THE SAME, AND THEN ESTABLISHING A VARYING MAGNETIC FIELD OF PREDETERMINED INTENSITY AND SHAPE AT THE SURFACE OF THE WORK PIECE, SAID FIELD BEING SUFFICIENT TO FORM THE WORK PIECE IN A DESIRED MANNER.
Claim 2
Independent Claim
53 words
A METHOD OF FORMING A WORK PIECE COMPRISING PASSING A CURRENT THROUGH THE WORK PIECE TO PREHEAT WITHOUT FORMING THE SAME, AND THEN ESTABLISHING A VARYING MAGNETIC FIELD OF PREDETERMINED INTENSITY AND SHAPE AT THE SURFACE OF THE WORK PIECE, SAID FIELD BEING SUFFICIENT TO FORM THE WORK PIECE IN A DESIRED MANNER.
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |