US3606657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bearings and other antifriction members from a synthetic resin material containing lubricant
Assignee: Oiles Industry Co Ltd
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Filing: 1969-08-20
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Granted: 1971-09-21
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Expires: 1989-08-20
Abstract
Abstract IN THIS METHOD, THERMOPLASTIC POLYACETAL SYNTHETIC RESIN POWDERS ARE MIXED WITH AN EXCESS OF A LUBRICANT OIL HEATED TO A TEMPERATURE NOT LOWER THAN THE MELTING POINT OF THE SYNTHETIC RESIN DURING AGITATING, AND ALLOWED TO SETTLE TO OBTAIN A PRECIPITATE DEPOSIT. THE RESULTING PRECIPITATE WAS PULVERIZED TO PRODUCE LUBRICANT CONTAINING THERMOPLASTIC SYNTHETIC RESIN POWDERS, AND THE POWDERS, OBTAINED ARE IMPREGNATED AND COATED ON A POROUS POWDER METALLURGICAL LAYER OF BRONZE ALLOY SINTERED ON THE SURFACE OF A STEEL PLATE, WHICH PLATE HAS A LAYER OF LUBRICANT FREE SYNTHETIC RESIN THEREON, THEREBY MANUFACTURING COMPOSITE BEARINGS.
Inventors
- 👤 Masayuki Horikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:23
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49702
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |