Patent US4138348A successfully refreshed from Google Patents.
US4138348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant for use in non-chip metal forming
Assignee: University of Victoria
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Filing: 1974-06-03
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Granted: 1979-02-06
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Expires: 1994-06-03
Abstract
Abstract The present invention is a water soluble, pasty lubricant containing a base material comprising a neutral fat and/or a vegetable oil, an alkali metal soap, water and an alkali metal salt of a boric acid. The lubricant has particular advantage for use in non-chip metal forming.
Inventors
- 👤 Hans D. Grasshoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:27
CPC Classifications
C; C10; C10M; C10M173/00; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/063; C10M2201/087; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/404; C10N; C10N2010/00; C10N2010/02; 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: 9
Claim 1
Independent Claim
57 words
A lubricant comprising: (a) 20 to 50 weight percent of a base material selected from the group consisting of a neutral fat and a vegetable oil, (b) 10 to 30 weight percent of an alkali metal soap, (c) 0.5 to 6 weight percent of an alkali metal salt of a boric acid, and (d) water, the remainder.
Claim 2
Dependent Claim
57 words
A lubricant comprising: (a) 20 to 50 weight percent of a base material selected from the group consisting of a neutral fat and a vegetable oil, (b) 10 to 30 weight percent of an alkali metal soap, (c) 0.5 to 6 weight percent of an alkali metal salt of a boric acid, and (d) water, the remainder.
Claim 3
Dependent Claim
14 words
The lubricant according to claim 1 wherein the base material is an animal fat.
Claim 4
Dependent Claim
25 words
The lubricant according to claim 1 wherein said base material and said soap are present in a ratio of from about 2 to 3:1, respectively.
Claim 5
Dependent Claim
42 words
The lubricant according to claim 1 wherein a fatty acid is obtained by saponification of a portion of said fat or oil and containing from 10 to 35 carbon atoms or mixtures of said fatty acids are used for forming the soap.
Claim 6
Dependent Claim
13 words
The lubricant according to claim 1 wherein the base material is vegetable oil.
Claim 7
Dependent Claim
23 words
The lubricant according to claim 1 wherein the alkali metal salt of a boric acid are the alkali metal salts of neptoxotetraboric acid.
Claim 8
Dependent Claim
17 words
A lubricant according to claim 6 wherein said alkali metal salt of boric acid is sodium tetraborate.
Claim 9
Dependent Claim
17 words
A lubricant according to claim 6 wherein said alkali metal salt of boric acid is potassium tetraborate.
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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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |