US3852205A
Expired / Lapsed
US
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Transmission fluid compositions and method
Assignee: Texaco Inc
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Filing: 1973-11-05
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Granted: 1974-12-03
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Expires: 1993-11-05
Abstract
Abstract A lubricating oil composition and concentrates thereof comprising a major proportion of mineral lubricating oil and a friction modifying amount of a member selected from the group consisting of S-carboxyalkylene hydrocarbylsuccinimide, Scarboxyalkylene hydrocarbyl succinamic acid and mixtures thereof and a method of operating automatic transmissions having friction sensitive power transmitting means utilizing a composition comprising a mineral oil and said member.
Inventors
- 👤 M Kablaoui
- 👤 A Godfrey
- 👤 R Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:26
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/416; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/108; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2225/00; C10M2225/02; C10M2227/00; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
40 words
A MINERAL OIL COMPOSITION COMPRISING AT LEAST ABOUT 50 WT. PERCENT OF A MINERAL LUBRICATING OIL AND BETWEEN ABOUT 0.01 AND 50 WT. PERCENT OF A FRACTION MODIFIER SELECTED FROM THE GROUP CONSISTING OF S-CARBOXYLALKYLENE HYDROCARBYLSUCCINIMIDE CHARACTERIZED BY THE FORMULA:
Claim 2
Dependent Claim
40 words
A MINERAL OIL COMPOSITION COMPRISING AT LEAST ABOUT 50 WT. PERCENT OF A MINERAL LUBRICATING OIL AND BETWEEN ABOUT 0.01 AND 50 WT. PERCENT OF A FRACTION MODIFIER SELECTED FROM THE GROUP CONSISTING OF S-CARBOXYLALKYLENE HYDROCARBYLSUCCINIMIDE CHARACTERIZED BY THE FORMULA:
Claim 3
Dependent Claim
40 words
A mineral oil composition in accordance with claim 1 wherein said lubricating oil is present in an amount at least about 50 wt. percent and said friction modifier is present in an amount between about 5 and 50 wt. percent.
Claim 4
Dependent Claim
46 words
A mineral oil composition useful in automatic transmission service comprising at least about 85 wt. percent of a mineral lubricating oil and between about 0.01 and 5 wt. percent of a friction modifier selected from the group consisting of S-carboxyalkylene hydrocarbyl succinimide characterized by the formula:
Claim 5
Dependent Claim
46 words
A mineral oil composition useful in automatic transmission service comprising at least about 85 wt. percent of a mineral lubricating oil and between about 0.01 and 5 wt. percent of a friction modifier selected from the group consisting of S-carboxyalkylene hydrocarbyl succinimide characterized by the formula:
Claim 6
Dependent Claim
26 words
A lubricating oil composition in accordance with claim 3 wherein said friction modifier is said mixture and where A is methylene and R3 is C18 alkyl.
Claim 7
Dependent Claim
27 words
A lubricating oil composition in accordance with claim 3 wherein said friction modifier is said mixture and where A is methylene and R3 is C14-C20 secondary alkyl.
Claim 8
Dependent Claim
25 words
A lubricating oil composition in accordance with claim 3 wherein said friction modifier is said mixture and where A is methylene and R3 is oleyl.
Claim 9
Dependent Claim
28 words
A lubricating oil composition in accordance with claim 3 where said friction modifier is said mixture and the weight ratio of imide to amic acid is about 2:1.
Claim 10
Independent Claim
53 words
A method for operating an automatic transmission which comprises supplying to said transmission a lubricating oil composition comprising at least about 85 wt. percent of a mineral lubricating oil and between about 0.01 and 5 wt. percent of a friction modifier selected from the group consisting of S-carboxyalkylene hydrocarbylsuccinimide characterized by the formula:
Claim 11
Independent Claim
53 words
A method for operating an automatic transmission which comprises supplying to said transmission a lubricating oil composition comprising at least about 85 wt. percent of a mineral lubricating oil and between about 0.01 and 5 wt. percent of a friction modifier selected from the group consisting of S-carboxyalkylene hydrocarbylsuccinimide characterized by the formula:
Claim 12
Dependent Claim
38 words
A method for operating an automatic transmission which comprises supplying to said transmission a lubricating composition in accordance with claim 8 wherein said friction modifier is said mixture and where A is methylene and R3 is C18 alkyl.
Claim 13
Dependent Claim
39 words
A method for operating an automatic transmission which comprises supplying to said transmission a lubricating composition in accordance with claim 8 wherein said friction modifier is said mixture and where A is methylene and R3 is C14-C20 secondary alkyl.
Claim 14
Dependent Claim
37 words
A method of operating an automatic transmission which comprises supplying to said transmission a lubricating composition in accordance with claim 8 wherein said friction modifier is said mixture and where A is methylene and R3 is oleyl.
Claim 15
Dependent Claim
40 words
A method of operating an automatic transmission which comprises supplying to said transmission a lubricating composition in accordance with claim 8 wherein said friction modifier is said mixture and the weight ratio of imide to amic acid is about 2:1.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |