US3783664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for control of lubricants in an aluminium rolling mill
Assignee: Alcan Research and Development Ltd
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Filing: 1972-01-12
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Granted: 1974-01-08
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Expires: 1992-01-12
Abstract
Abstract In the operation of an aluminum rolling mill, in which the lubricant is an oil-in-water emulsion, having an oil phase consisting of a hydrocarbon oil base, containing a free fatty acid and an amino-soap, the average particle size of the oil phase particles is periodically adjusted by the addition to the water phase either of multivalent metallic ion to increase particle size or of an alkali metal soap or material to generate an alkali metal soap by reaction with free fatty acid to reduce particle size so as to retain the particle size within an optimum range.
Inventors
- 👤 K Tripathi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:50
CPC Classifications
B; B21; B21B; B21B45/00; B21B45/02; B21B45/0239; B21B45/0242; C; C10; C10M; C10M173/00; B21B3/00; B21B2003/001; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/062; C10M2201/063; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/14; C10M2215/24; C10M2215/26; C10M2215/28; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A method according to claim 1 in which the effect of accumulated multivalent metallic ion is counteracted by the addition of an alkali metal hydroxide.
Claim 2
Dependent Claim
34 words
A method accorDing to claim 1 in which the oil phase contains 13-17% fatty acid and 2-2.5 percent tricresyl phosphate and 2-4 percent triethanolamine reacted with an equivalent proportion of the said fatty acid.
References Cited (Backward Citations)
US3311557A
Cited
US3409551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |