US3264215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular disc lubricant
Assignee: Illinois Railway Equipment Co
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Filing: 1963-07-18
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Granted: 1966-08-02
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Expires: 1983-07-18
Abstract
No abstract record available.
Inventors
- 👤 Smith Edward Payson
- 👤 Jensen Finn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:38
CPC Classifications
F; F16; F16N; F16N15/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
FOR INSTALLATION BETWEEN THE CENTER PLATES OF A RAILWAY CAR RELATIVELY ROTATABLE IN NORMAL OPERATION THROUGH ABOUT 5* UNDER PRESSURE OF ABOUT 1000 LBS. PER SQUARE INCH AND HAVING A CENTER PIN EXTENDING THERETHROUGH, A LUBRICATING MEDIUM IN THE FORM OF AN ANNULAR DISC COMPOSED OF: A NORMALLY STABLE RESINOUS CARRIER MATERIAL SUBJECT TO FRANGIBLE DISINTEGRATION WHEN IN USE BETWEEN SAID PLATES, AND A LUBRICATING MIXTURE OF LEAD, BRASS AND GRAPHITE DISPERSED THROUGH SAID CARRIER MATERIAL.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |