US3286498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressive forming
Assignee: General Electric Co
•
Filing: 1964-02-03
•
Granted: 1966-11-22
•
Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Cogan Richard Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:28
CPC Classifications
B; B21; B21J; B21J5/00; B21C; B21C23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A METHOD OF COMPRESSIVE FORMING AN ARTICLE FROM A WORKPIECE HAVING A HOLLOW CORE, THE STEPS OF: (A) PLACING ALL OF THE MATERIAL OF THE WORKPIECE UNDER COMPRESSION WITH A FIRST FORCE WHICH IS LESS THAN THAT REQUIRED TO PLASTICALLY DEFORM THE MATERIAL OF THE WORKPIECE; AND (B) APPLYING TO INTERNAL WALLS OF THE WORKPIECE HOLLOW CORE A SECOND FORCE; (C) THE SUM OF THE FIRST AND SECOND FORCES EXCEEDING THAT FORCE REQUIRED TO PLASTICALLY DEFORM THE MATERIAL OF THE WORKPIECE.
Claim 2
Dependent Claim
82 words
IN A METHOD OF COMPRESSIVE FORMING AN ARTICLE FROM A WORKPIECE HAVING A HOLLOW CORE, THE STEPS OF: (A) PLACING ALL OF THE MATERIAL OF THE WORKPIECE UNDER COMPRESSION WITH A FIRST FORCE WHICH IS LESS THAN THAT REQUIRED TO PLASTICALLY DEFORM THE MATERIAL OF THE WORKPIECE; AND (B) APPLYING TO INTERNAL WALLS OF THE WORKPIECE HOLLOW CORE A SECOND FORCE; (C) THE SUM OF THE FIRST AND SECOND FORCES EXCEEDING THAT FORCE REQUIRED TO PLASTICALLY DEFORM THE MATERIAL OF THE WORKPIECE.
References Cited (Backward Citations)
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |