Patent US3158474A successfully refreshed from Google Patents.
US3158474A
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Compaction process
Assignee: Westinghouse Electric Corp
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Filing: 1960-10-07
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Granted: 1964-11-24
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Expires: 1980-10-07
Abstract
No abstract record available.
Inventors
- 👤 Thor A Anderson
- 👤 Delbel Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:01
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/17; B22F3/172; B65; B65B; B65B1/00; B65B1/20; B65B1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A PROCESS FOR THE COMPACTION OF METAL POWDER IN WHICH A PRESSER HEAD COMPACTS THE POWDER IN A DIE HAVING A CAVITY OF PREDETERMINED CONFIGURATION, THE STEPS OF, (1) CONFINING A QUANTITY OF FLOWABLE, METAL POWDER WITHIN A RELATIVELY THIN, FLEXIBLE, AND RESILIENT ENVELOPE OF ORGANIC MATERIAL HAVING A SHAPE CLOSELY APPROXIMATING SAID PREDETERMINED CONFIGURATION, WITH SAID POWDER COMPLETELY FILLING SAID ENVELOPE, (2) SEALING SAID ENVELOPE, (3) INTERMITTENTLY MOVING THE POWDER-FILLED ENVELOPE THROUGH SAID DIE IN CONTACT WITH THE WALLS THEREOF, (4) COMPACTING THE ENVELOPE AND METAL POWDER WHEN A REST IN THE DIE TO PRODUCE A POWDER COMPACT ELEMENT BY EMPLOYING THE PRESSER HEAD TO FORCE THE POWDER-FILLED ENVELOPE INTO FORMING CONTACT WITH THE WALLS OF SAID CAVITY, (5) REMOVING THE COMPACTED METAL ELEMENT WITH THE ADHERENT ENVELOPE FROM THE DIE, AND (6) REMOVING THE ENVELOPE FROM THE COMPACT.
Claim 2
Dependent Claim
141 words
IN A PROCESS FOR THE COMPACTION OF METAL POWDER IN WHICH A PRESSER HEAD COMPACTS THE POWDER IN A DIE HAVING A CAVITY OF PREDETERMINED CONFIGURATION, THE STEPS OF, (1) CONFINING A QUANTITY OF FLOWABLE, METAL POWDER WITHIN A RELATIVELY THIN, FLEXIBLE, AND RESILIENT ENVELOPE OF ORGANIC MATERIAL HAVING A SHAPE CLOSELY APPROXIMATING SAID PREDETERMINED CONFIGURATION, WITH SAID POWDER COMPLETELY FILLING SAID ENVELOPE, (2) SEALING SAID ENVELOPE, (3) INTERMITTENTLY MOVING THE POWDER-FILLED ENVELOPE THROUGH SAID DIE IN CONTACT WITH THE WALLS THEREOF, (4) COMPACTING THE ENVELOPE AND METAL POWDER WHEN A REST IN THE DIE TO PRODUCE A POWDER COMPACT ELEMENT BY EMPLOYING THE PRESSER HEAD TO FORCE THE POWDER-FILLED ENVELOPE INTO FORMING CONTACT WITH THE WALLS OF SAID CAVITY, (5) REMOVING THE COMPACTED METAL ELEMENT WITH THE ADHERENT ENVELOPE FROM THE DIE, AND (6) REMOVING THE ENVELOPE FROM THE COMPACT.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |