US3728089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-silicon base sintered porous bearing metals
Assignee: Oiles Industry Co Ltd
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Filing: 1970-08-13
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Granted: 1973-04-17
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Expires: 1990-08-13
Abstract
Abstract ALUMINUM BASE SINTERED BEARING METALS HAVING VARIOUS ADVANTAGES CAN BE OBTAINED FROM METAL POWDERS PARTICULARLY INCLUDING 5 TO 50% BY WEIGHT OF SILICON. IT HAS BEEN FOUND THA THE ADDITION OF SILICON SUBSTANTIALLY REDUCES THE TENDENCY OF ALUMINUM BASE METALS TO CAUSE HEAT SEIZURE AND HELPS TO PREVENT THE SURFACE CLOGGING OF THE SINTERED PRODUCT. ALSO, THE METAL MIXTURE TO BE SINTERED INCLUDING SILICON POWDER HAS AN IMPROVED COMPACTIBILITY.
Inventors
- 👤 T Segawa
- 👤 K Tsuru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:06
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02; C22C28/00; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12153; Y10T428/1216
Claims Analysis
Total Claims: 0
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |