Patent US3206963A successfully refreshed from Google Patents.
US3206963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for explosive forming of metal articles
Assignee: Lockheed Martin Corp
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Filing: 1962-04-04
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Granted: 1965-09-21
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Noble N Ida
- 👤 Jack T Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:19
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF FORMING AND SHAPING METAL BLANKS TO REQUIRED SHAPES WHICH COMPRISES CLAMPING A BLANK OF METAL FROM WHICH THE PART IS TO BE SHAPED OVER AN OPENING IN A DIE WITH ITS PERIPHERY EXTENDING BEYOND THAT OF SAID OPENING AT ALL POINTS, POSITIONING A FREELY MOVABLE PLUG OF DUCTILE MATERIAL OF SUBSTANTIALLY THE SAME SIZE AS SAID OPENING OVER THE BLANK SO THAT THE PERIPHERIES OF SAID PLUG AND SAID OPENING SUBSTANTIALLY COINCIDE, CONTAINING A FLUID MEDIUM CONTIGUOUS TO THE CONTACT SURFACE OF THE PLUG, AND INITIATING A SPHERICAL SHOCK WAVE IN SAID FLUID MEDIUM AT A POINT REMOVED FROM SAID PLUG AND SUBSTANTIALLY OPPOSITE THE CENTER OF THE PLUG WHEREBY THE SHOCK WAVE IMPINGES ON THE CONTACT SURFACE OF THE PLUG TO FORM THE BLANK.
Claim 2
Independent Claim
128 words
THE METHOD OF FORMING AND SHAPING METAL BLANKS TO REQUIRED SHAPES WHICH COMPRISES CLAMPING A BLANK OF METAL FROM WHICH THE PART IS TO BE SHAPED OVER AN OPENING IN A DIE WITH ITS PERIPHERY EXTENDING BEYOND THAT OF SAID OPENING AT ALL POINTS, POSITIONING A FREELY MOVABLE PLUG OF DUCTILE MATERIAL OF SUBSTANTIALLY THE SAME SIZE AS SAID OPENING OVER THE BLANK SO THAT THE PERIPHERIES OF SAID PLUG AND SAID OPENING SUBSTANTIALLY COINCIDE, CONTAINING A FLUID MEDIUM CONTIGUOUS TO THE CONTACT SURFACE OF THE PLUG, AND INITIATING A SPHERICAL SHOCK WAVE IN SAID FLUID MEDIUM AT A POINT REMOVED FROM SAID PLUG AND SUBSTANTIALLY OPPOSITE THE CENTER OF THE PLUG WHEREBY THE SHOCK WAVE IMPINGES ON THE CONTACT SURFACE OF THE PLUG TO FORM THE BLANK.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |