US2531910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum thallium bearing
Assignee: Duracell Inc USA
•
Filing: 1945-11-23
•
Granted: 1950-11-28
•
Expires: 1965-11-23
Abstract
No abstract record available.
Inventors
- 👤 Franz R Hensel
- 👤 Earl I Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:16
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/003; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12764; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A BEARING FORMED OF A CAST ALLOY COMPOSED OF ABOUT 0.1 TO 10 PERCENT THALLIUM BY WEIGHT AND THE BALANCE SUBSTANTIALLY ALL ALUMINUM, SAID BEARING BEING CHARACTERIZED BY LOW COEFFICIENT OF FRICTION AND HIGH RESISTANCE TO SEIZURE.
Claim 2
Dependent Claim
37 words
A BEARING FORMED OF A CAST ALLOY COMPOSED OF ABOUT 0.1 TO 10 PERCENT THALLIUM BY WEIGHT AND THE BALANCE SUBSTANTIALLY ALL ALUMINUM, SAID BEARING BEING CHARACTERIZED BY LOW COEFFICIENT OF FRICTION AND HIGH RESISTANCE TO SEIZURE.
References Cited (Backward Citations)
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Cited
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US2026572A
Cited
US2170039A
Cited
US2277023A
Cited
GB487401A
Cited
US2241789A
Cited
US2329483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |