US3382064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature bearing steels
Assignee: Timken Co
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Filing: 1964-09-03
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Granted: 1968-05-07
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Expires: 1984-09-03
Abstract
No abstract record available.
Inventors
- 👤 Chester F Jatczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:31
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/12; C23; C23C; C23C8/00; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AS A NEW ARTICLE OF MANUFACTURE, A CASE CARBURIZED STEEL BEARING MEMBER FORMED FROM STEEL CONSISTING ESSENTIALLY OF ABOUT 0.1 TO 0.3% OF CARBON, 0 TO 1.0% OF CHROMIUM, 0.2 TO 1% OF MANGANESE, 3 TO 7% OF MOLYBDENUM, 0.2 TO 0.6% OF SILICONE, 0.25 TO 0.85% OF VANADIUM, AND THE REMAINDER IRON TOGETHER WITH IMPURTIES AND RESIDUAL ELEMENTS IN AMOUNT NOT ADVERSELY AFFECTING THE PROPERTIES OF STEELS OF THE SAID COMPOSITION, THE BEARING MEMBER BEING CHARACTERIZED WHEN CARBURIZED AND HARDENED FROM 2100*F. BY A CASE HARDNESS OF AT LEAST ABOUT 52.5 ROCKWELL "C" AT 1000*F., AND A RECOVERED CASE HARDNESS AFTER 1000*F. FOR 1000 HOURS OF ABOUT 62 ROCKWELL "C".
Claim 2
Dependent Claim
111 words
AS A NEW ARTICLE OF MANUFACTURE, A CASE CARBURIZED STEEL BEARING MEMBER FORMED FROM STEEL CONSISTING ESSENTIALLY OF ABOUT 0.1 TO 0.3% OF CARBON, 0 TO 1.0% OF CHROMIUM, 0.2 TO 1% OF MANGANESE, 3 TO 7% OF MOLYBDENUM, 0.2 TO 0.6% OF SILICONE, 0.25 TO 0.85% OF VANADIUM, AND THE REMAINDER IRON TOGETHER WITH IMPURTIES AND RESIDUAL ELEMENTS IN AMOUNT NOT ADVERSELY AFFECTING THE PROPERTIES OF STEELS OF THE SAID COMPOSITION, THE BEARING MEMBER BEING CHARACTERIZED WHEN CARBURIZED AND HARDENED FROM 2100*F. BY A CASE HARDNESS OF AT LEAST ABOUT 52.5 ROCKWELL "C" AT 1000*F., AND A RECOVERED CASE HARDNESS AFTER 1000*F. FOR 1000 HOURS OF ABOUT 62 ROCKWELL "C".
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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |