US3108325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming device
Assignee: General Dynamics Corp
•
Filing: 1961-01-13
•
Granted: 1963-10-29
•
Expires: 1981-01-13
Abstract
No abstract record available.
Inventors
- 👤 George W Harvey
- 👤 Gerald L Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:30
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14; Y; Y10; Y10S; Y10S425/00; Y10S425/026; Y10S425/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A MAGNETIC FORMING DEVICE COMPRISING A COIL, A CAPACITOR BANK, MEANS CONNECTED TO SAID CAPACITOR BANK FOR CHARGING THE SAME, MEANS FOR SELECTIVELY CONNECTING SAID CAPACITOR BANK TO SAID COIL, AND A CYLINDRICAL MEMBER OF CONDUCTIVE MATERIAL DISPOSED IN COAXIAL RELATIONSHIP WITH SAID COIL, SAID MEMBER HAVING AN AXIALLY EXTENDING APERTURE THEREIN AND A RADIALLY EXTENDING SLOT BETWEEN THE EXTENDAL SURFACE THEREOF AND THE APERTURE, THE CHARGE STORED IN SAID CAPACITY BANK BEING SUFFICIENT TO SET UP A MAGNETIC FIELD IN THE APERTURE WHICH IS OF A SUFFICIENT INTENSITY TO FORM A WORK PIECE DISPOSED THEREIN IN THE DESIRED MANNER.
Claim 2
Dependent Claim
100 words
A MAGNETIC FORMING DEVICE COMPRISING A COIL, A CAPACITOR BANK, MEANS CONNECTED TO SAID CAPACITOR BANK FOR CHARGING THE SAME, MEANS FOR SELECTIVELY CONNECTING SAID CAPACITOR BANK TO SAID COIL, AND A CYLINDRICAL MEMBER OF CONDUCTIVE MATERIAL DISPOSED IN COAXIAL RELATIONSHIP WITH SAID COIL, SAID MEMBER HAVING AN AXIALLY EXTENDING APERTURE THEREIN AND A RADIALLY EXTENDING SLOT BETWEEN THE EXTENDAL SURFACE THEREOF AND THE APERTURE, THE CHARGE STORED IN SAID CAPACITY BANK BEING SUFFICIENT TO SET UP A MAGNETIC FIELD IN THE APERTURE WHICH IS OF A SUFFICIENT INTENSITY TO FORM A WORK PIECE DISPOSED THEREIN IN THE 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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |