Patent US3300837A successfully refreshed from Google Patents.
US3300837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bimetallic bearing material
Assignee: Clevite Industries Inc
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Filing: 1965-04-30
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Granted: 1967-01-31
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Expires: 1985-04-30
Abstract
No abstract record available.
Inventors
- 👤 William F Fisher
- 👤 Raymond L Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:54
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/227; B23K20/2275; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/14; F16C2220/00; F16C2220/80; F16C2220/82; F16C2223/00; F16C2223/02; F16C2223/08; F16C2223/30; F16C2223/32; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/94; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49671; Y10T29/49673; Y10T29/49675; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
THE METHOD OF MAKING A BIMETALLIC BEARING WHICH COMPRISES THE STEPS OF: SELECTING A LAYER OF ALUMINUM ALLOY CONSISTING ESSENTIALLY OF TIN 10% TO 35%, COPPER 0.5% TO 2%, AND THE BALANCE SUBSTANTIALLY ALUMINUM; SELECTING A BACKING LAYER OF LOW CARBON STEEL; CLEANING AND SEVERELY ROUGHENING THE BONDING INTERFACES OF SAID TWO LAYERS AND SUBSTANTIALLY IMMEDIATELY THEREAFTER OF SAID TWO LAYERS AND SUBSTANTIALLY IMMEDIATELY THEREAFTER PASSING SAID LAYERS TOGETHER THROUGH PRESSURE ROLLS HAVING A TEMPERATURE WITHIN THE RANGE 200-350*F. TO DIRECTLY BOND SAID LAYERS TOGETHER FACE TO FACE, THE PRESSURE OF SAID ROLLS ON SAID LAYERS BEING SUCH AS TO REDUCE THE THICKNESS OF THE ALUMINUM LAYER BETWEEN 50% AND 70% TO EFFECT A STRONG METALLURGICAL BOND THEREBETWEEN TO FORM A BIMETAL LAYER AND TO MAINTAIN THE TEMPERATURE OF SAID ROLLS WITHIN THE RANGE 200-350*F.; CUTTING SAID BIMETAL LAYER INTO SECTIONS AND FORMING SAID SECTIONS INTO SUITABLE BEARING SHAPES.
Claim 2
Independent Claim
149 words
THE METHOD OF MAKING A BIMETALLIC BEARING WHICH COMPRISES THE STEPS OF: SELECTING A LAYER OF ALUMINUM ALLOY CONSISTING ESSENTIALLY OF TIN 10% TO 35%, COPPER 0.5% TO 2%, AND THE BALANCE SUBSTANTIALLY ALUMINUM; SELECTING A BACKING LAYER OF LOW CARBON STEEL; CLEANING AND SEVERELY ROUGHENING THE BONDING INTERFACES OF SAID TWO LAYERS AND SUBSTANTIALLY IMMEDIATELY THEREAFTER OF SAID TWO LAYERS AND SUBSTANTIALLY IMMEDIATELY THEREAFTER PASSING SAID LAYERS TOGETHER THROUGH PRESSURE ROLLS HAVING A TEMPERATURE WITHIN THE RANGE 200-350*F. TO DIRECTLY BOND SAID LAYERS TOGETHER FACE TO FACE, THE PRESSURE OF SAID ROLLS ON SAID LAYERS BEING SUCH AS TO REDUCE THE THICKNESS OF THE ALUMINUM LAYER BETWEEN 50% AND 70% TO EFFECT A STRONG METALLURGICAL BOND THEREBETWEEN TO FORM A BIMETAL LAYER AND TO MAINTAIN THE TEMPERATURE OF SAID ROLLS WITHIN THE RANGE 200-350*F.; CUTTING SAID BIMETAL LAYER INTO SECTIONS AND FORMING SAID SECTIONS INTO SUITABLE BEARING SHAPES.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |