US3853773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-gum and solvating lubricant
Assignee: International Business Machines Corp
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Filing: 1972-12-26
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Granted: 1974-12-10
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Expires: 1992-12-26
Abstract
Abstract Extended service lubrication properties as evidenced by a reduced viscosity increase are achieved by a lubricant composition of 25 percent to 75 percent by volume of highly compounded mineral oil in the form of type A transmission fluid with the balance highly refined white mineral oil. During accelerated oxidation testing, a significant range of compositions of the combination of oils has a viscosity increase which is less than that of either of the component oils, evidencing enhanced oxidation stability.
Inventors
- 👤 J Martin
- 👤 C Patros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:15
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/044; C10M101/00; C10M101/02; C10M129/00; C10M129/02; C10M129/68; C10M129/70; C10M135/00; C10M135/08; C10M135/10; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M143/00; C10M143/06; C10M149/00; C10M149/02; C10M149/04; C10M2203/00; C10M2203/10; C10M2203/1006; C10M2203/102; C10M2203/1025; C10M2203/104; C10M2203/1045; C10M2203/106; C10M2203/1065; C10M2203/108; C10M2203/1085; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/22; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/286; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
IN A LUBRICATING OIL COMPRISING A HIGHLY COMPOUNDED MINERAL OIL CONTAINING: AS AN ANTI-OXIDANT AND CORRISON INHIBITOR, A CALCIUM PETROLEUM SULFONATE; AS AN ANTI-WEAR AGENT, ZINC DITHIOPHOSPHATE; AS AN DETERGENT-DSIPERANT, A POLYPOLAR POLYMER CONSISTING OF A NITROGEN CONTAINING MONOMER LINKED TO A LONG CHAIN METHACRYLATE; AND AS A VISCOSITY INDEX OIMPROVER POLYISOBUTYLENE, THE IMPROVEMENT COMPRISING ADDING TO THE BASE OIL 25 TO 75 PERCENT BY VOLUME OF A HIGHLY REFINED WHITE MINERAL OIL NOT EXCEEDING A VISCOSITY OF 180 SUS.
Claim 2
Dependent Claim
80 words
IN A LUBRICATING OIL COMPRISING A HIGHLY COMPOUNDED MINERAL OIL CONTAINING: AS AN ANTI-OXIDANT AND CORRISON INHIBITOR, A CALCIUM PETROLEUM SULFONATE; AS AN ANTI-WEAR AGENT, ZINC DITHIOPHOSPHATE; AS AN DETERGENT-DSIPERANT, A POLYPOLAR POLYMER CONSISTING OF A NITROGEN CONTAINING MONOMER LINKED TO A LONG CHAIN METHACRYLATE; AND AS A VISCOSITY INDEX OIMPROVER POLYISOBUTYLENE, THE IMPROVEMENT COMPRISING ADDING TO THE BASE OIL 25 TO 75 PERCENT BY VOLUME OF A HIGHLY REFINED WHITE MINERAL OIL NOT EXCEEDING A VISCOSITY OF 180 SUS.
Claim 3
Dependent Claim
34 words
The lubricant of claim 1 wherein said highly refined white mineral oil is a colorless, odorless, tasteless white mineral oil insoluble in water and alcohol, miscible with oils, and which is non-alkaline and non-acid.
Claim 4
Dependent Claim
77 words
In an extended life lubricant for precision mechanisms comprising a highly compounded mineral oil containing: as an anti-oxidant and corrosion inhibitor, a calcium petroleum sulfonate; as an anti-wear agent, zinc dithiophosphate; as a detergent-dispersant, a polypolar polymer consisting of a nitrogen containing monomer linked to a long chain methacrylate, the improvement comprising adding to the base oil 40 to 60 percent by volume of a highly refined white mineral oil not exceeding a viscosity of 180 SUS.
Claim 5
Dependent Claim
77 words
In an extended life lubricant for precision mechanisms comprising a highly compounded mineral oil containing: as an anti-oxidant and corrosion inhibitor, a calcium petroleum sulfonate; as an anti-wear agent, zinc dithiophosphate; as a detergent-dispersant, a polypolar polymer consisting of a nitrogen containing monomer linked to a long chain methacrylate, the improvement comprising adding to the base oil 40 to 60 percent by volume of a highly refined white mineral oil not exceeding a viscosity of 180 SUS.
Claim 6
Dependent Claim
34 words
The lubricant of claim 3 wherein said highly refined white mineral oil is a colorless, odorless, tasteless white mineral oil insoluble in water and alcohol, miscible with oils, and which is non-alkaline and non-acid.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |