US2824060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing compositions containing polytetrafluoroethylene and polytrifluorochloroethylene
Assignee: Individual
•
Filing: 1954-10-15
•
Granted: 1958-02-18
•
Expires: 1974-10-15
Abstract
No abstract record available.
Inventors
- 👤 Hobart S White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:48
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/22; C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; G; G01; G01R; G01R19/00; G01R19/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
AN OIL- AND GREASE-FREE BEARING COMPOSITION CONSISTING OF A MIXTURE OF POLYTRIFLUROCHOLORETHYLENE HAVING A MOLECULAR WEIGHT RANGING FROM 76,000 TO 110,000 TO THE AMOUNT OF 10 TO 60% BY WEIGHT AND POLYTETRAFLUOROETHYLENE HAVING A MOLECULAR WEIGHT RANGING FROM 500,000 TO 10,000,000 TO THE AMOUNG OF 10 T/ 80% BY WEIGHT, AND A FILLER SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, TUNGSTENM, GLASS AND CHROMIUM TETRAHYDRATE TO THE AMOUNT OF 0 TO 80% BY WEIGHT.
References Cited (Backward Citations)
US2400099A
Cited
US2400091A
Cited
US2531007A
Cited
US2510078A
Cited
GB708906A
Cited
US2644802A
Cited
US2685707A
Cited
GB712426A
Cited
US2691814A
Cited
US2656475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |