US2874042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum bronze alloy containing manganese and having improved wear resistance
Assignee: Ampco Metal Inc
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Filing: 1957-10-01
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Granted: 1959-02-17
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Expires: 1977-10-01
Abstract
No abstract record available.
Inventors
- 👤 John F Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:39
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
AN ALUMINUM BRONZE ALLOY HAVING IMPROVED TOUGHNESS AND WEAR RESISTANCE, CONSISTING ESSENTIALLY OF 13% TO 20% ALUMINUM, FROM 1% TO 8% IRON, FROM 1.0% TO 8.0% MANGANESE, AND THE BALANCE BEING SUBSTANTIALLY COPPER, SAID ALLOY HAVING IMPROVED HOMOGENEITY O STRUCTURE AND UNIFORMITY OF HARNESS BY HEATING THE ALLOY TO A TEMPERATURE AT 1150* F. AND THEREAFTER COOLING THE ALLOY AT A RATE FASTER THAN 20* F. PER HOUR PER ONE INCH OF SECTION THICKNESS TO ROOM TEMPERATURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |