US3899625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal treated with lubricant for press work
Assignee: Nippon Steel Corp
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Filing: 1972-12-21
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Granted: 1975-08-12
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Expires: 1992-12-21
Abstract
Abstract A sheet metal to be subjected to press work having a film thereon which film has been formed by dispersing a hotmelt type lubricant in a water-soluble or water-dispersible resinous solution and then coating the resultant solution on the surface of said sheet metal. Said lubricant is in solidified or semisolidified form at ordinary temperatures. The film formed is of lubricative nature having a high coefficient of statical friction, and shows an effect of preventing sliding before the press work and also an effect of lubricating by melting the lubricant at the time of the press work.
Inventors
- 👤 Soichi Izumi
- 👤 Takeo Ashiura
- 👤 Yoshiji Ito
- 👤 Nobutaka Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:36
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/201; C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/14; C10M2205/18; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/024; C10M2217/028; C10M2217/06; C10N; C10N2010/00; C10N2010/04; 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; C10N2070/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
A SHEET METAL COATED ON AT LEAST ONE SURFACE THEREOF WITH A DRIED LUBRIEANT FILM HAVING A HIGH COEFFICIENT OF STATIC FRICTION TO PREVENT SLIDING OF SAID COATED SHEET METAL WHEN STACKED, SAID FILM COMPRISING A DISCRETE LUBRIANT DISPERSED IN AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF A. A WATER SOLUBLE RESIN WHICH HAS A HIGHER COEFFICIENT OF STATIC FRICTION THAN SAID LUBRIANT, AND B. A WATER DISPERIBLE RESIN CONTAINING CARBOXYLIC GROUPS AND HAVING AN ACID VALUE OF ABOUT 30 TO 400 AND A GLASS TRANSITION TEMPERATURE OF 33*C OR LESS SAID DISCRETE LUBRIANT BEING SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SOLIDIFIED TO SEMISOLIDIFIED WAXES, HIGHER FATTY ACIDS, ESTERS OF HIGHER FATTY ACIDS AND METALLIC SALTS OR HIGHER FATTY ACIDS, WHEREIN THE WEIGHT RATIO OF SAID RESIN TO SAID DISCRETE LUBRIANT IS BETWEEN 0.05 AND 10.
Claim 2
Dependent Claim
144 words
A SHEET METAL COATED ON AT LEAST ONE SURFACE THEREOF WITH A DRIED LUBRIEANT FILM HAVING A HIGH COEFFICIENT OF STATIC FRICTION TO PREVENT SLIDING OF SAID COATED SHEET METAL WHEN STACKED, SAID FILM COMPRISING A DISCRETE LUBRIANT DISPERSED IN AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF A. A WATER SOLUBLE RESIN WHICH HAS A HIGHER COEFFICIENT OF STATIC FRICTION THAN SAID LUBRIANT, AND B. A WATER DISPERIBLE RESIN CONTAINING CARBOXYLIC GROUPS AND HAVING AN ACID VALUE OF ABOUT 30 TO 400 AND A GLASS TRANSITION TEMPERATURE OF 33*C OR LESS SAID DISCRETE LUBRIANT BEING SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SOLIDIFIED TO SEMISOLIDIFIED WAXES, HIGHER FATTY ACIDS, ESTERS OF HIGHER FATTY ACIDS AND METALLIC SALTS OR HIGHER FATTY ACIDS, WHEREIN THE WEIGHT RATIO OF SAID RESIN TO SAID DISCRETE LUBRIANT IS BETWEEN 0.05 AND 10.
Claim 3
Dependent Claim
155 words
A sheet metal coated on at least one surface thereof with a dried lubricant film having a high coefficient of static friction to prevent sliding of said coated sheet metal when stacked, said film comprising a lubricant dispersed in at lease one member selected from the group consisting of a. a water-soluble resin which has a higher coefficient to static friction than said lubricant, and b. a water dispersible resin containing coarboxylic groUps and having an acid value of about 30 to 400 and a glass transition temperature of 35*C. or less, said lubricant being selected from at least one member of the group consisting of solidified to semi-solidified waxes, higher fatty acids, esters of higher fatty acids and metallic salts of higher fatty acids and wherein said lubricant has a particle size between 0.1 mu and 10 mu and wherein the weight ratio of said resin to said lubricant is between 0.05 and 10.
Claim 4
Dependent Claim
155 words
A sheet metal coated on at least one surface thereof with a dried lubricant film having a high coefficient of static friction to prevent sliding of said coated sheet metal when stacked, said film comprising a lubricant dispersed in at lease one member selected from the group consisting of a. a water-soluble resin which has a higher coefficient to static friction than said lubricant, and b. a water dispersible resin containing coarboxylic groUps and having an acid value of about 30 to 400 and a glass transition temperature of 35*C. or less, said lubricant being selected from at least one member of the group consisting of solidified to semi-solidified waxes, higher fatty acids, esters of higher fatty acids and metallic salts of higher fatty acids and wherein said lubricant has a particle size between 0.1 mu and 10 mu and wherein the weight ratio of said resin to said lubricant is between 0.05 and 10.
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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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |