US3015320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-graded lubricant for 2-cycle engines
Assignee: Pure Oil Co
•
Filing: 1956-01-05
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Granted: 1962-01-02
•
Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Brennan
- 👤 James G Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10M; C10M1/00; C10M1/08; C10L1/16; C10L1/1616; C10L1/24; C10L1/2406; C10L1/2412; C10L1/2431; C10L1/2437; C10L1/30; C10L1/305; C10L1/306; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10N; C10N2040/00; C10N2040/25; C10N2040/255; C10N2040/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A METHOD FOR OPERATING A SPARK-IGNITED, 2-CYCLE, INTERNAL COMBUSTION ENGINE, WHICH COMPRISES INTRODUCING INTO THE COMBUSTION CHAMBER OF SAID ENGINE, A COMBUSTIBLE ADMIXTURE OF AIR AND A FUEL CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A GASOLINE, AAND A MINOR PORTION OF A LUBRICANT CONSISTING ESSENTIALLY OF THE FOLLOWING THREE COMPONENTS: (1) A MAJOR PORTION OF A MINERAL LIBRICATING OIL HAVING ENHANCED VISCOSITY-INDEX CHARACTERISTICS, (2) 1.0 TO 2.5 WT. PERCENT, BASED ON SAID OIL , OF A BARIUM SALT OF AN ALKYL PHENOL SULFIDE, AND (3) 0.25 TO 1.0 WT. PERCENT, BASED ON SAID OIL, OF AN OIL SOLUBLE ALKALINE EARTH METAL SULFONATE, AT LEAST ONE OF THE COMPONENTS 3 AND 3 HAVING A NEUTRALIZATION VALUE (TOTAL BASE NUMBER) TO IMPART TO SAID OIL, WHEN ADDED THERETO IN THE AFORESAID AMOUNT, A NEUTRALIZATION VALUE (TOTAL BASE NUMBER) OF 0.6 TO 3.5.
Claim 2
Independent Claim
141 words
A METHOD FOR OPERATING A SPARK-IGNITED, 2-CYCLE, INTERNAL COMBUSTION ENGINE, WHICH COMPRISES INTRODUCING INTO THE COMBUSTION CHAMBER OF SAID ENGINE, A COMBUSTIBLE ADMIXTURE OF AIR AND A FUEL CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A GASOLINE, AAND A MINOR PORTION OF A LUBRICANT CONSISTING ESSENTIALLY OF THE FOLLOWING THREE COMPONENTS: (1) A MAJOR PORTION OF A MINERAL LIBRICATING OIL HAVING ENHANCED VISCOSITY-INDEX CHARACTERISTICS, (2) 1.0 TO 2.5 WT. PERCENT, BASED ON SAID OIL , OF A BARIUM SALT OF AN ALKYL PHENOL SULFIDE, AND (3) 0.25 TO 1.0 WT. PERCENT, BASED ON SAID OIL, OF AN OIL SOLUBLE ALKALINE EARTH METAL SULFONATE, AT LEAST ONE OF THE COMPONENTS 3 AND 3 HAVING A NEUTRALIZATION VALUE (TOTAL BASE NUMBER) TO IMPART TO SAID OIL, WHEN ADDED THERETO IN THE AFORESAID AMOUNT, A NEUTRALIZATION VALUE (TOTAL BASE NUMBER) OF 0.6 TO 3.5.
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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |