US3177689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming workpieces
Assignee: General Dynamics Corp
•
Filing: 1961-10-09
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Granted: 1965-04-13
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Christian Earl Landon
- 👤 Vlieg Donald Gerard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:37
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF FORMING COMPRISING PLACING A THIN INFLEXIBLE DIE WALL OVER AN OPENING IN A CONTAINER, PLACING A WORKPIECE OVER ONE SIDE OF SAID DIE WALL TO DEFINE AN AIR SPACE THEREBETWEEN, SECURING THE EDGES OF SAID DIE WALL AND WORKPIECE TO SAID CONTAINER TO EFFECT SEALING THEREBETWEEN, COMPLETELY FILLING SAID CONTAINER WITH AN INCOMPRESSIBLE FLUID TO IMMOVABLY BACK THE OTHER SIDE OF SAID DIE WALL, EVACUATING AIR FROM SAID AIR SPACE, IMMERSING SAID DIE WALL, CONTAINER, AND WORKPIECE IN A
Claim 2
Independent Claim
82 words
A METHOD OF FORMING COMPRISING PLACING A THIN INFLEXIBLE DIE WALL OVER AN OPENING IN A CONTAINER, PLACING A WORKPIECE OVER ONE SIDE OF SAID DIE WALL TO DEFINE AN AIR SPACE THEREBETWEEN, SECURING THE EDGES OF SAID DIE WALL AND WORKPIECE TO SAID CONTAINER TO EFFECT SEALING THEREBETWEEN, COMPLETELY FILLING SAID CONTAINER WITH AN INCOMPRESSIBLE FLUID TO IMMOVABLY BACK THE OTHER SIDE OF SAID DIE WALL, EVACUATING AIR FROM SAID AIR SPACE, IMMERSING SAID DIE WALL, CONTAINER, AND WORKPIECE IN A
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |