Patent US2671036A successfully refreshed from Google Patents.
US2671036A
Expired / Lapsed
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Method of cleaning internalcombustion engines
Assignee: Standard Oil Co
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Filing: 1948-11-01
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Granted: 1954-03-02
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Expires: 1968-11-01
Abstract
No abstract record available.
Inventors
- 👤 Karl H Obermeit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:30
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD OF CLEANING AN ENGINE INTERNALLY WHICH COMPRISES INTRODUCING INTO THE CRANKCASE OF THE ENGINE AN AMOUNT OF A CLEANING COMPOSITION AT LEAST EQUAL TO THE LUBRICATING OIL CAPACITY OF THE ENGINE, SAID CLEANING COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 50 TO ABOUT 75 PARTS BY VOLUME OF A HYDROCARBON LUBRICATING OIL HAVING A VISCOSITY RANGING FORM ABOUT 75 SUS AT 100* F. UP TO SAE 30 TO 50 TO 25 PARTS BY VOLUME OF A CRESOLSOAP SOLUTION, SAID SOLUTION COMPRISING ABOUT EQUAL PARTS BY VOLUME OF ORTHO-CRESOL AND OF A POTASSIUM LINSEED OIL SOAP SOLUTION, SAID SOAP SOLUTION HAVING A PH BETWEEN ABOUT 8.5 AND 9.0, IDLING THE ENGINE FOR A PERIOD UP TO ABOUT ONE HOUR AND THEREAFTER DRAINING THE ENGINE.
Claim 2
Independent Claim
123 words
A METHOD OF CLEANING AN ENGINE INTERNALLY WHICH COMPRISES INTRODUCING INTO THE CRANKCASE OF THE ENGINE AN AMOUNT OF A CLEANING COMPOSITION AT LEAST EQUAL TO THE LUBRICATING OIL CAPACITY OF THE ENGINE, SAID CLEANING COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 50 TO ABOUT 75 PARTS BY VOLUME OF A HYDROCARBON LUBRICATING OIL HAVING A VISCOSITY RANGING FORM ABOUT 75 SUS AT 100* F. UP TO SAE 30 TO 50 TO 25 PARTS BY VOLUME OF A CRESOLSOAP SOLUTION, SAID SOLUTION COMPRISING ABOUT EQUAL PARTS BY VOLUME OF ORTHO-CRESOL AND OF A POTASSIUM LINSEED OIL SOAP SOLUTION, SAID SOAP SOLUTION HAVING A PH BETWEEN ABOUT 8.5 AND 9.0, IDLING THE ENGINE FOR A PERIOD UP TO ABOUT ONE HOUR AND THEREAFTER DRAINING THE ENGINE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |