US3253443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming device
Assignee: General Dynamics Corp
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Filing: 1965-03-04
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Granted: 1966-05-31
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 John H Malmberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:37
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
APPARATUS FOR FORMING A CONDUCTIVE WORKPIECE, COMPRISING A COIL DEFINING A SPACE, MEANS FOR COUPLING SAID COIL TO A SOURCE OF CURRENT PULSES, WHEREBY SAID COIL SERVES AS A SOURCE OF MAGNETOMOTIVE FORCE, A CONDUCTIVE MEANS DEFINING AN ELONGATED PASSAGEWAY, AND A WORK SPACE AT ONE END OF SAID CONDUCTIVE MEANS FOR RECEIVING A CONDUCTIVE WORKPIECE, SAID WORK SPACE BEING AT A LOCATION WHICH IS SPATIALLY REMOVED FROM THE SPACE DEFINED BY SAID COIL, SAID COIL BEING DISPOSED ADJACENT THE OTHER END OF SAID PASSAGEWAY WHEREBY SAID CONDUCTIVE MEANS GUIDES FLUX PRODUCED BY SAID MAGNETOMOTIVE FORCE INTO AS PREDETERMINED CONFIGURATION AT THE SURFACE OF THE WORKPIECE POSITIONED IN SAID WORK SPACE.
Claim 2
Dependent Claim
111 words
APPARATUS FOR FORMING A CONDUCTIVE WORKPIECE, COMPRISING A COIL DEFINING A SPACE, MEANS FOR COUPLING SAID COIL TO A SOURCE OF CURRENT PULSES, WHEREBY SAID COIL SERVES AS A SOURCE OF MAGNETOMOTIVE FORCE, A CONDUCTIVE MEANS DEFINING AN ELONGATED PASSAGEWAY, AND A WORK SPACE AT ONE END OF SAID CONDUCTIVE MEANS FOR RECEIVING A CONDUCTIVE WORKPIECE, SAID WORK SPACE BEING AT A LOCATION WHICH IS SPATIALLY REMOVED FROM THE SPACE DEFINED BY SAID COIL, SAID COIL BEING DISPOSED ADJACENT THE OTHER END OF SAID PASSAGEWAY WHEREBY SAID CONDUCTIVE MEANS GUIDES FLUX PRODUCED BY SAID MAGNETOMOTIVE FORCE INTO AS PREDETERMINED CONFIGURATION AT THE SURFACE OF THE WORKPIECE POSITIONED IN SAID WORK SPACE.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |