US2845346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming porous cemented metal powder bodies
Assignee: Schwarzkopf Technologies Corp
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Filing: 1954-01-13
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Granted: 1958-07-29
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Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Scanlan
- 👤 Alter Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:01
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/24; B22F3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS OF MAKING A SHAPED BODY OUT OF A SINTERED POROUS BASE-METAL PARTICLE SKELETON HAVING AT LEAST ONE REGION WHICH CONTAINS INTER-CONNECTED PORES WHICH ARE FREE OF INFILTRANT METAL AND AT LEAST ONE OTHER REGION CONTAINING INTER-CONNECTED PORES FILLED WITH AN INFILTRANT METAL HAVING A LOWER MELTING POINT THAN SAID BASE METAL, THE PROCEDURE COMPRISING THE STEPS OF PROVIDING A SHAPED SKELTON OF BASE METAL PARTICLES BONDED TOGETHER BY PARTIAL SINTERING, PROVIDING SAID SKELETON WITH AT LEAST TWO REGIONS SEPARATED BY A BARRIER REGION CONTAINING PARTICLES OF AN ADDITION METAL WHICH AT THE ELEVATED TEMPERATURE OF MOLTEN INFILTRANT METAL SUPPRESSES THE FLOW OF MOLTEN INFILTRANT METAL INTO THE PORES OF SAID BARRIER REGION, COMPLETING THE SINTERING OF SAID SKELETON WHILE PROVIDING A MOLTEN INFILTRANT FOR INFILTRATION INTO THE PORES OF SAID BODY FROM ONE SIDE OF SAID BARRIER REGION WHEREBY SAID BARRIER REGION PREVENTS THE MOLTEN INFILTRANT METAL FROM INFILTRATING INTO SAID OTHER REGION PAST SAID BARRIER REGION.
Claim 2
Dependent Claim
159 words
A PROCESS OF MAKING A SHAPED BODY OUT OF A SINTERED POROUS BASE-METAL PARTICLE SKELETON HAVING AT LEAST ONE REGION WHICH CONTAINS INTER-CONNECTED PORES WHICH ARE FREE OF INFILTRANT METAL AND AT LEAST ONE OTHER REGION CONTAINING INTER-CONNECTED PORES FILLED WITH AN INFILTRANT METAL HAVING A LOWER MELTING POINT THAN SAID BASE METAL, THE PROCEDURE COMPRISING THE STEPS OF PROVIDING A SHAPED SKELTON OF BASE METAL PARTICLES BONDED TOGETHER BY PARTIAL SINTERING, PROVIDING SAID SKELETON WITH AT LEAST TWO REGIONS SEPARATED BY A BARRIER REGION CONTAINING PARTICLES OF AN ADDITION METAL WHICH AT THE ELEVATED TEMPERATURE OF MOLTEN INFILTRANT METAL SUPPRESSES THE FLOW OF MOLTEN INFILTRANT METAL INTO THE PORES OF SAID BARRIER REGION, COMPLETING THE SINTERING OF SAID SKELETON WHILE PROVIDING A MOLTEN INFILTRANT FOR INFILTRATION INTO THE PORES OF SAID BODY FROM ONE SIDE OF SAID BARRIER REGION WHEREBY SAID BARRIER REGION PREVENTS THE MOLTEN INFILTRANT METAL FROM INFILTRATING INTO SAID OTHER REGION PAST SAID BARRIER REGION.
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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |