US2561579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated ferrous gear
Assignee: Motors Liquidation Co
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Filing: 1947-10-02
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Granted: 1951-07-24
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Expires: 1967-10-02
Abstract
No abstract record available.
Inventors
- 👤 Fritz V Lenel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/08; Y; Y10; Y10S; Y10S164/00; Y10S164/07; Y10S74/00; Y10S74/10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/4948; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19949; Y10T74/19963
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A NEW ARTICLE OF MANUFACTURE CONSISTING OF AN ENTIRE POROUS FERROUS GEAR MADE FROM SINTERED METAL POWDER WHEREIN THE TOOTH PORTIONS ONLY THEREOF ARE SELECTIVELY AND PREDETERMINEDLY IMPREGNATED WITH A CUPREOUS ALLOY FOR INCREASING THE STRENGTH OF SAID PORTIONS.
Claim 2
Dependent Claim
39 words
A NEW ARTICLE OF MANUFACTURE CONSISTING OF AN ENTIRE POROUS FERROUS GEAR MADE FROM SINTERED METAL POWDER WHEREIN THE TOOTH PORTIONS ONLY THEREOF ARE SELECTIVELY AND PREDETERMINEDLY IMPREGNATED WITH A CUPREOUS ALLOY FOR INCREASING THE STRENGTH OF SAID PORTIONS.
References Cited (Backward Citations)
US2051915A
Cited
US2275420A
Cited
US2299192A
Cited
US2331909A
Cited
US2401221A
Cited
GB580262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |