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US2991250A
Expired / Lapsed
US
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Marine turbine lubrication
Assignee: ExxonMobil Oil Corp
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Filing: 1957-03-28
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Granted: 1961-07-04
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Expires: 1977-03-28
Abstract
No abstract record available.
Inventors
- 👤 John F Socolofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:48
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/12; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A METHOD OF LUBRICATING A MARINE TURBINE AND THE ASSOCIATED REDUCTION GEARS WHICH COMPRISES APPLYING TO THE RELATIVELY MOVING PARTS THEREOF A COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL LUBRICATING OIL, A MINOR PROPORTION, FROM ABOUT 0.05% TO ABOUT 2%, BY WEIGHT, OF A PHENOLIC ANTIOXIDANT, A MINOR PROPORTION, FROM ABOUT 0.01% TO ABOUT 1%, BY WEIGHT, OF AN ANTIRUST AGENT CONSISTING OF A REACTION PRODUCT OBTAINED BY REACTING A MONOCARBOXYLIC ACID WITH A POLYALKYLENEPOLYAMINE HAVING ONE MORE NITROGEN ATOM PER MOLECULE THAN THERE ARE ALKYLENE GROUPS IN THE MOLECULE, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT 1 AND ABOUT X-1 TO 1, RESPECTIVELY, WHEREIN X REPRESENTS THE NUMBER OF NITROGEN ATOMS IN THE POLYALKYLENEPOLYAMINE MOLECULE, TO PRODUCE AN INTERMEDIATE PRODUCT, AND REACTING AN ALKENYL SUCCINIC ACID ANHYDRIDE WITH SAID INTERMEDIATE PRODUCT, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT X-1 AND ABOUT 1 TO 1, RESPECTIVELY, THE SUM OF THE NUMBER OF MOLES OF SAID MONOCARBOXYLIC ACID AND OF SAID ALKENYL SUCCINIC ACID ANHYDRIDE REACTED WITH EACH MOLE OF SAID POLYALKYLENEPOLYAMINE BEING NO GREATER THAN X, AND A MINOR PROPORTION, FROM ABOUT 0.25% TO ABOUT 5.0%, BY WEIGHT, OF TRIS-(2-CHLOROPROPYL)-THIONOPHOSPHATE.
Claim 2
Independent Claim
190 words
A METHOD OF LUBRICATING A MARINE TURBINE AND THE ASSOCIATED REDUCTION GEARS WHICH COMPRISES APPLYING TO THE RELATIVELY MOVING PARTS THEREOF A COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL LUBRICATING OIL, A MINOR PROPORTION, FROM ABOUT 0.05% TO ABOUT 2%, BY WEIGHT, OF A PHENOLIC ANTIOXIDANT, A MINOR PROPORTION, FROM ABOUT 0.01% TO ABOUT 1%, BY WEIGHT, OF AN ANTIRUST AGENT CONSISTING OF A REACTION PRODUCT OBTAINED BY REACTING A MONOCARBOXYLIC ACID WITH A POLYALKYLENEPOLYAMINE HAVING ONE MORE NITROGEN ATOM PER MOLECULE THAN THERE ARE ALKYLENE GROUPS IN THE MOLECULE, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT 1 AND ABOUT X-1 TO 1, RESPECTIVELY, WHEREIN X REPRESENTS THE NUMBER OF NITROGEN ATOMS IN THE POLYALKYLENEPOLYAMINE MOLECULE, TO PRODUCE AN INTERMEDIATE PRODUCT, AND REACTING AN ALKENYL SUCCINIC ACID ANHYDRIDE WITH SAID INTERMEDIATE PRODUCT, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT X-1 AND ABOUT 1 TO 1, RESPECTIVELY, THE SUM OF THE NUMBER OF MOLES OF SAID MONOCARBOXYLIC ACID AND OF SAID ALKENYL SUCCINIC ACID ANHYDRIDE REACTED WITH EACH MOLE OF SAID POLYALKYLENEPOLYAMINE BEING NO GREATER THAN X, AND A MINOR PROPORTION, FROM ABOUT 0.25% TO ABOUT 5.0%, BY WEIGHT, OF TRIS-(2-CHLOROPROPYL)-THIONOPHOSPHATE.
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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |