US4138348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant for use in non-chip metal forming
Assignee: University of Victoria
•
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 02:31
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.
References Cited (Backward Citations)
US2040321A
Cited
US2565938A
Cited
US2664399A
Cited
US2609780A
Cited
US2626898A
Cited
US2753304A
Cited
US2958659A
Cited
US3223635A
Cited
US3313729A
Cited
US3483124A
Cited
US3758407A
Cited
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 |