US2606831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of impregnation
Assignee: Motors Liquidation Co
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Filing: 1950-04-18
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Granted: 1952-08-12
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Expires: 1970-04-18
Abstract
No abstract record available.
Inventors
- 👤 Roland P Koehring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:37
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49799; Y10T29/4981; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A METHOD OF IMPREGNATING A POROUS FERROUS PART WITH A CUPREOUS METAL WHEREIN PITTING AND CHANNELLING OF THE FERROUS PART IS COMPLETELY ELIMINATED, THE STEPS COMPRISING; BRIQUETTING A POROUS FERROUS PART FROM FERROUS METAL POWDER AND SIMULTANEOUSLY FORMING AN INTEGRAL EXTENSION THEREON CONNECTED TO THE REMAINDER OF THE PART BY A NARROWED NECT PORTION, SINSTERING SAID PART AND CONNECTED EXTENSION FOR FORMING A POROUS METAL ARTICLE, PLACING CUPREOUS METAL IN PREDETERMINED QUANTITIES AND OF THE DESIRED CONSISTUENCY UPON SAID EXTENSION ONLY, HEATING THE ASSEMBLY UNDER NON-OXIDIZING CONDITIONS AT A TEMPERATURE ABOVE THE MELTING POINT OF THE CUPREOUS METAL AND BELOW THE MELTING POINT OF THE FERROUS METAL UNDER SUITABLE CONDITIONS OF TIME, TEMPERATURE AND ATMOSPHERE TO CAUSE THE CUPREOUS MELAL TO MELT AND FLOW AND BY CAPILLARITY THROUGH SAID EXTENSION AND NECK AND INTO THE FERROUS METAL FOR IMPREGNATING THE PART, COOLING THE IMPREGNATED PART AND ITS INTEGRAL EXTENSION UNDER SUITABLE CONDITIONS AND FINALLY REMOVING THE EXTENSION FROM THE FERROUS PART AT THE NECK PORTION THEREOF.
Claim 2
Dependent Claim
167 words
IN A METHOD OF IMPREGNATING A POROUS FERROUS PART WITH A CUPREOUS METAL WHEREIN PITTING AND CHANNELLING OF THE FERROUS PART IS COMPLETELY ELIMINATED, THE STEPS COMPRISING; BRIQUETTING A POROUS FERROUS PART FROM FERROUS METAL POWDER AND SIMULTANEOUSLY FORMING AN INTEGRAL EXTENSION THEREON CONNECTED TO THE REMAINDER OF THE PART BY A NARROWED NECT PORTION, SINSTERING SAID PART AND CONNECTED EXTENSION FOR FORMING A POROUS METAL ARTICLE, PLACING CUPREOUS METAL IN PREDETERMINED QUANTITIES AND OF THE DESIRED CONSISTUENCY UPON SAID EXTENSION ONLY, HEATING THE ASSEMBLY UNDER NON-OXIDIZING CONDITIONS AT A TEMPERATURE ABOVE THE MELTING POINT OF THE CUPREOUS METAL AND BELOW THE MELTING POINT OF THE FERROUS METAL UNDER SUITABLE CONDITIONS OF TIME, TEMPERATURE AND ATMOSPHERE TO CAUSE THE CUPREOUS MELAL TO MELT AND FLOW AND BY CAPILLARITY THROUGH SAID EXTENSION AND NECK AND INTO THE FERROUS METAL FOR IMPREGNATING THE PART, COOLING THE IMPREGNATED PART AND ITS INTEGRAL EXTENSION UNDER SUITABLE CONDITIONS AND FINALLY REMOVING THE EXTENSION FROM THE FERROUS PART AT THE NECK PORTION THEREOF.
References Cited (Backward Citations)
US1853385A
Cited
US2401221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |