US2761828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming internally flanged structures
Assignee: Leland Stanford Junior University
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Filing: 1954-08-16
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Granted: 1956-09-04
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Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Arnold L Eldredge
- 👤 Edward L Ginzton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:48
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF FORMING A DISC-LOADED HOMOGENEOUS, INTERNALLY FLANGED CAVITIED STRUCTURE OF EXACT INTERNAL VOLUME WHICH COMPRISES THE STEPS OF SHAPING FLANGES OF THE METAL TO COMPRISE SAID STRUCTURE TO THE EXACT INTERNAL AND THICKNESS DIMENSIONS OF THE COMPLETED STRUCTURE, SHAPING CENTRALLY APERTURED SPACERS OF THE EXACT THICKNESS OF THE DESIRED SEPARATION BETWEEN SAID FLANGES AND OUTER DIMENSIONS OF THE DESIRED CAVITIES AND OF A DIFFERENT METAL FROM THAT OF SAID FLANGES, ASSEMBLING SAID FLANGES AND SPACERS ALTERNATELY TO FORM A STACK, CAPPING THE ENDS OF SAID STACK TO PREVENT THE ENTRY OF LIQUID THEREIN, CLAMPING THE CAPPED STACK TOGETHER TO PRESENT A CONTINOUS OUTER SURFACE, PLATING A CONTINUOUS LAYER OF THE METAL TO COMPRISE SAID STRUCTURE ON SAID OUTER SURFACE, REMOVING THE CAPPING FROM SAID STRUCTURE, AND ETCHING THE METAL OF SAID SPACERS FROM THE INTERIOR OF THE STRUCTURE.
Claim 2
Independent Claim
140 words
THE METHOD OF FORMING A DISC-LOADED HOMOGENEOUS, INTERNALLY FLANGED CAVITIED STRUCTURE OF EXACT INTERNAL VOLUME WHICH COMPRISES THE STEPS OF SHAPING FLANGES OF THE METAL TO COMPRISE SAID STRUCTURE TO THE EXACT INTERNAL AND THICKNESS DIMENSIONS OF THE COMPLETED STRUCTURE, SHAPING CENTRALLY APERTURED SPACERS OF THE EXACT THICKNESS OF THE DESIRED SEPARATION BETWEEN SAID FLANGES AND OUTER DIMENSIONS OF THE DESIRED CAVITIES AND OF A DIFFERENT METAL FROM THAT OF SAID FLANGES, ASSEMBLING SAID FLANGES AND SPACERS ALTERNATELY TO FORM A STACK, CAPPING THE ENDS OF SAID STACK TO PREVENT THE ENTRY OF LIQUID THEREIN, CLAMPING THE CAPPED STACK TOGETHER TO PRESENT A CONTINOUS OUTER SURFACE, PLATING A CONTINUOUS LAYER OF THE METAL TO COMPRISE SAID STRUCTURE ON SAID OUTER SURFACE, REMOVING THE CAPPING FROM SAID STRUCTURE, AND ETCHING THE METAL OF SAID SPACERS FROM THE INTERIOR OF THE STRUCTURE.
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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |