US3962103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry powder lubricant
Assignee: Alcoa Corp
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Filing: 1975-05-16
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Granted: 1976-06-08
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Expires: 1995-05-16
Abstract
Abstract A dry powder lubricant is provided comprising 1-10 carbon fatty acid salt of a group IV-A metal and an alkali metal soap wherein exposure to temperatures in excess of 100°C will cause the soap and the salt to react to form a group IV-A metal soap lubricant in situ.
Inventors
- 👤 William G. Johnston
- 👤 Wendell C. Milz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:56
CPC Classifications
C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10N; C10N2010/00; C10N2010/02; C10N2010/08; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/08; C10N2050/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
A dry powder composition suitable for use as a high temperature forging lubricant comprising a 1-10 carbon fatty acid salt of a group IV-A metal and an alkali metal soap wherein exposure to temperatures in excess of about 100°C will cause the soap and the salt to react to form a group IV-A metal soap lubricant in situ.
Claim 2
Dependent Claim
58 words
A dry powder composition suitable for use as a high temperature forging lubricant comprising a 1-10 carbon fatty acid salt of a group IV-A metal and an alkali metal soap wherein exposure to temperatures in excess of about 100°C will cause the soap and the salt to react to form a group IV-A metal soap lubricant in situ.
Claim 3
Dependent Claim
38 words
A dry powder lubricant of claim 1 wherein said fatty acid salt of the group IV-A metal and said alkali metal soap are used in stoichiometrically equal amounts to form said group IV-A metal soap lubricant in situ.
Claim 4
Dependent Claim
58 words
The lubricant of claim 2 wherein an alkali metal salt of a 1-10 carbon fatty acid is used in an amount of 40 to 60 percent by total weight of the dry powder composition to provide a molten salt medium for the reaction of said fatty acid salt of the group IV-A metal with the alkali metal soap.
Claim 5
Dependent Claim
27 words
The lubricant of claim 3 wherein powdered graphite is also used in the amount of 10 to 15 percent by total weight of the dry powder composition.
Claim 6
Dependent Claim
38 words
The lubricant of claim 3 wherein an inorganic alkali metal halide salt is used in the amount of 5 to 10 percent by total weight of the lubricant to inhibit sticking of the forged pieces in the die.
Claim 7
Dependent Claim
115 words
A dry powder lubricant composition suitable for use as a high temperature forging lubricant comprising: a. a 1-10 carbon fatty acid salt of a group IV-A metal; b. an alkali metal soap in an amount stoichiometrically equivalent to the amount of fatty acid salt of the group IV-A metal; and c. about 40 to 60 percent by total weight of the dry powder composition of an alkali metal salt of a 1-10 fatty acid to provide a molten salt medium wherein said fatty acid salt of the group IV-A metal and the alkali metal soap may react upon exposure to temperatures of 100°C or higher to form a group IV-A metal soap lubricant in situ.
Claim 8
Dependent Claim
115 words
A dry powder lubricant composition suitable for use as a high temperature forging lubricant comprising: a. a 1-10 carbon fatty acid salt of a group IV-A metal; b. an alkali metal soap in an amount stoichiometrically equivalent to the amount of fatty acid salt of the group IV-A metal; and c. about 40 to 60 percent by total weight of the dry powder composition of an alkali metal salt of a 1-10 fatty acid to provide a molten salt medium wherein said fatty acid salt of the group IV-A metal and the alkali metal soap may react upon exposure to temperatures of 100°C or higher to form a group IV-A metal soap lubricant in situ.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |