US3255278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel element manufacture
Assignee: Airco Inc
•
Filing: 1964-10-13
•
Granted: 1966-06-07
•
Expires: 1984-10-13
Abstract
No abstract record available.
Inventors
- 👤 Mark J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:00
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/34; G; G21; G21C; G21C21/00; G21C21/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
THE METHOD OF MAKING AN ENCAPSULATED TUBULAR ELEMENT INCLUDING (A) DEPOSITING POWDERED ENCAPSULATING MATERIAL IN A DIE CHAMBER AROUND A HOLE SPINDLE AND AROUND AN OUTER SHELL-FORMING PLUNGER LOCATED ALONG A PORTION OF THE LENGTH OF THE SPINDLE, WITH BOTH THE SPINDLE AND THE PLUNDER CENTRALLY LOCATED ALONG THE AXIS OF THE DIE CHAMBER AND SPACED FROM THE WALL OF THE CHAMBER, (B) FILLING THE SPACE AROUND THE PLUNGER AND BEYOND THE TOP OF THE PLUNGER ALONG A LENGTH OF THE HOLE SPINDLE BEYOND THE PLUNGER WITH SHELL-FORMING MATERIAL, (C) COMPACTING THE SHELL-FORMING MATERIAL UNDER AXIALLY-EXERTED PRESSURE, (D) INVERTING THE DIE CHAMBER AND THE COMPACTED MATERIAL CONTAINED THEREIN, (E) REMOVING THE PLUNGER AND REPLACING IT WITH A SPACER OF LESS RADIAL WIDTH THAN THE PLUNGER SO AS TO LEAVE A NEW CLEARANCE BETWEEN THE COMPACTED MATERIAL AND THE SPACER, (F) DEPOSITING IN THE NEW CLEARANCE CORE MATERIAL TO BE ENCAPSULATED, (G) COMPACTING THE CORE MATERIAL, (H) THEN WITHDRAWING THE SPACER TO LEAVE AN INNER CLEARANCE BETWEEN THE CORE MATERIAL AND THE HOLE SPINDLE, (I) DEPOSITING ADDITIONAL ENCAPSULATING MATERIAL IN THE INNER CLEARANCE, (J) AND COMPACTING THE ADDITIONAL ENCAPSULATING MATERIAL TO COMPLETE THE SHELL.
Claim 2
Independent Claim
193 words
THE METHOD OF MAKING AN ENCAPSULATED TUBULAR ELEMENT INCLUDING (A) DEPOSITING POWDERED ENCAPSULATING MATERIAL IN A DIE CHAMBER AROUND A HOLE SPINDLE AND AROUND AN OUTER SHELL-FORMING PLUNGER LOCATED ALONG A PORTION OF THE LENGTH OF THE SPINDLE, WITH BOTH THE SPINDLE AND THE PLUNDER CENTRALLY LOCATED ALONG THE AXIS OF THE DIE CHAMBER AND SPACED FROM THE WALL OF THE CHAMBER, (B) FILLING THE SPACE AROUND THE PLUNGER AND BEYOND THE TOP OF THE PLUNGER ALONG A LENGTH OF THE HOLE SPINDLE BEYOND THE PLUNGER WITH SHELL-FORMING MATERIAL, (C) COMPACTING THE SHELL-FORMING MATERIAL UNDER AXIALLY-EXERTED PRESSURE, (D) INVERTING THE DIE CHAMBER AND THE COMPACTED MATERIAL CONTAINED THEREIN, (E) REMOVING THE PLUNGER AND REPLACING IT WITH A SPACER OF LESS RADIAL WIDTH THAN THE PLUNGER SO AS TO LEAVE A NEW CLEARANCE BETWEEN THE COMPACTED MATERIAL AND THE SPACER, (F) DEPOSITING IN THE NEW CLEARANCE CORE MATERIAL TO BE ENCAPSULATED, (G) COMPACTING THE CORE MATERIAL, (H) THEN WITHDRAWING THE SPACER TO LEAVE AN INNER CLEARANCE BETWEEN THE CORE MATERIAL AND THE HOLE SPINDLE, (I) DEPOSITING ADDITIONAL ENCAPSULATING MATERIAL IN THE INNER CLEARANCE, (J) AND COMPACTING THE ADDITIONAL ENCAPSULATING MATERIAL TO COMPLETE THE SHELL.
References Cited (Backward Citations)
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US3081249A
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |