US3081196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubbing contact material
Assignee: Clevite Corp
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Filing: 1960-05-04
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Granted: 1963-03-12
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Expires: 1980-05-04
Abstract
No abstract record available.
Inventors
- 👤 Robert J Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:30
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/027; C; C10; C10M; C10M7/00; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; C10M2201/00; C10M2201/04; C10M2201/05; C10M2201/06; C10M2201/062; C10M2201/085; C10M2201/10; C10M2201/105; C10M2201/12; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/08; C10N2050/10; F16C2204/00; F16C2204/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12063; Y10T428/12181; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/1266; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/12903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A RUBBING CONTACT MATERIAL COMPRISING: A MATRIX HAVING A SURFACE OF A MATERIAL WHOSE FREE ENERGY OF OXIDE FORMATION IS MORE POSITIVE THAN LEAD OXIDE AND CONSEQUENTLY DOES NOT TEND TO REDUCE LEAD OXIDE, AND INCORPORATED INTO SAID MATRIX A LEAD-OXIDE BASE MIXTURE OF AT LEAST ONEOTHER OXIDE, THE AMOUNT OF THE OTHER OXIDE BEING SUCH THAT THE MIXTURE HAS A LOWER MELTING POINT THAN THAT OF LEAD OXIDE.
Claim 2
Dependent Claim
69 words
A RUBBING CONTACT MATERIAL COMPRISING: A MATRIX HAVING A SURFACE OF A MATERIAL WHOSE FREE ENERGY OF OXIDE FORMATION IS MORE POSITIVE THAN LEAD OXIDE AND CONSEQUENTLY DOES NOT TEND TO REDUCE LEAD OXIDE, AND INCORPORATED INTO SAID MATRIX A LEAD-OXIDE BASE MIXTURE OF AT LEAST ONEOTHER OXIDE, THE AMOUNT OF THE OTHER OXIDE BEING SUCH THAT THE MIXTURE HAS A LOWER MELTING POINT THAN THAT OF LEAD OXIDE.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |