US3294568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of plain bearings
Assignee: HOHENZOLLERN HUETTENVERWALT
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Filing: 1963-02-08
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Granted: 1966-12-27
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Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 Gossmann Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; F16C33/203; F16C33/205; F16C33/208; F16C2208/00; F16C2208/20; F16C2208/30; F16C2208/32; F16C2208/80; F16C2208/86; F16C2240/00; F16C2240/40; F16C2240/48; F16C2240/60; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/91; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD OF MAKING PLAIN BEARINGS HAVING A METALLIC BASE AND A LAYER OF BEARING MATERIAL WHICH METHOD COMPRISES MIXING A POLYTERAFLUOROETHYLENE POWDER HAVING A PARTICLE SIZE IN THE RANGE BETWEEN 20 AND 70 MICRONS WITH A THERMOSETTING RESIN TO FORM A POLYMERIC MIXTURE BEING AMOUNT OF POLYTETRAFLUROETHYLENE IN THE MIXTUE BEING 30% TO 80% BY WEIGHT, COATING SAID POLYMERIC MIXTURE ON SAID METALLIC BASE TO FORM A LAYER HAVING A THICKNESS IN THE RANGE OF 0.1 TO 1 MILLIMETER, HEAT CURING SAID POLYMERIC MIXTURE TO FORM THE LAYER OF BEARING MATERIAL, AND MACHINING SAID LAYER OF BEARING MATERIAL TO EXPOSE THE PARTICLES OF POLYTETRAFLUROETHYLENE.
Claim 2
Independent Claim
105 words
A METHOD OF MAKING PLAIN BEARINGS HAVING A METALLIC BASE AND A LAYER OF BEARING MATERIAL WHICH METHOD COMPRISES MIXING A POLYTERAFLUOROETHYLENE POWDER HAVING A PARTICLE SIZE IN THE RANGE BETWEEN 20 AND 70 MICRONS WITH A THERMOSETTING RESIN TO FORM A POLYMERIC MIXTURE BEING AMOUNT OF POLYTETRAFLUROETHYLENE IN THE MIXTUE BEING 30% TO 80% BY WEIGHT, COATING SAID POLYMERIC MIXTURE ON SAID METALLIC BASE TO FORM A LAYER HAVING A THICKNESS IN THE RANGE OF 0.1 TO 1 MILLIMETER, HEAT CURING SAID POLYMERIC MIXTURE TO FORM THE LAYER OF BEARING MATERIAL, AND MACHINING SAID LAYER OF BEARING MATERIAL TO EXPOSE THE PARTICLES OF POLYTETRAFLUROETHYLENE.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |