US2841244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of lubricating engines with vaporous lubricants
Assignee: Shell Development Co
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Filing: 1954-10-18
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Granted: 1958-07-01
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Expires: 1974-10-18
Abstract
No abstract record available.
Inventors
- 👤 Stanley S Sorem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:43
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6637; F16C33/6659; F16C33/6662; F01; F01D; F01D25/00; F01D25/18; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2360/00; F16C2360/23; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS OF LUBRICATING SOLID SURFACES SUBJECTED TO TEMPERATURES IN EXCESS OF 450*F., HIGH LOADS, SCUFFING AND SEIZING CONDITIONS WHICH COMPREISES PREFORMING ON SAID SURFACES PROTECTIVE FILMS THEREON SELECTED FROM THE GROUP CONSISTING OF SULFIDES, SELENIDES, TELLURIDES, PHOSPHATES AND HALIDES AND THEREAFTER CONTACTING SAID SURFACES WITH A VAPOROUS LUBRICANT COMPRISING A BLEND OF A FREE-OXYGEN-CONTAINING GASEOUS MATERIAL AND A HYDROCARBON LIQUID LUBRICANT HAVING AN END BOILING POINT BELOW 450*F., SAID BLEND BEING IN THE WEIGHT RATIO OF OXYGEN TO LIQUID LUBRICANT FROM ABOUT 7:50 ABOUT 2:1, RESPECTIVELY.
Claim 2
Dependent Claim
87 words
A PROCESS OF LUBRICATING SOLID SURFACES SUBJECTED TO TEMPERATURES IN EXCESS OF 450*F., HIGH LOADS, SCUFFING AND SEIZING CONDITIONS WHICH COMPREISES PREFORMING ON SAID SURFACES PROTECTIVE FILMS THEREON SELECTED FROM THE GROUP CONSISTING OF SULFIDES, SELENIDES, TELLURIDES, PHOSPHATES AND HALIDES AND THEREAFTER CONTACTING SAID SURFACES WITH A VAPOROUS LUBRICANT COMPRISING A BLEND OF A FREE-OXYGEN-CONTAINING GASEOUS MATERIAL AND A HYDROCARBON LIQUID LUBRICANT HAVING AN END BOILING POINT BELOW 450*F., SAID BLEND BEING IN THE WEIGHT RATIO OF OXYGEN TO LIQUID LUBRICANT FROM ABOUT 7:50 ABOUT 2:1, RESPECTIVELY.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |