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Patent US3676344A successfully refreshed from Google Patents.
US3676344A
Expired / Lapsed
US
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Ether amides in aqueous lubricants
Assignee: CP HALL COMPANY
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Filing: 1970-09-02
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Granted: 1972-07-11
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Expires: 1990-09-02
Abstract
Abstract Metals, when rolled or otherwise compressed, are lubricated by an aqueous solution of an organic, polar, surface-acting composition having a negative heat of solution which is an ether amide which is soluble in the water at a lower temperature but insoluble in the water at the temperature to which the aqueous solution is heated during compression of the metal. This aqueous lubricant eliminates the fire hazard involved in the use of the present non-aqueous lubricants.
Inventors
- 👤 Vincent P Kuceski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:04
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10N; 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: 4
Claim 1
Independent Claim
13 words
The method of claim 1 in which the ether amide has the formula
Claim 2
Dependent Claim
13 words
The method of claim 1 in which the ether amide has the formula
Claim 3
Dependent Claim
14 words
The method of claim 1 in which the metal article is a metal sheet.
Claim 4
Dependent Claim
29 words
The method of claim 1 in which metal is lubricated as it is rolled, and the separation temperature of the aqueous lubricant is between substantially 30* and 95* C.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |