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US3936407A
Expired / Lapsed
US
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Coated metal fasteners
Assignee: United States Steel Corp
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Filing: 1974-09-23
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Granted: 1976-02-03
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Expires: 1994-09-23
Abstract
Abstract Coated nails and other driven fasteners designed to increase the force requied to withdraw the nail, screw, tack, staple, or other fastener from wood or similar materials, are disclosed. The coating for the metal fasteners is an emulsion or rosin or a rosin-like resin in an ethylene co- or terpolymer.
Inventors
- 👤 Robert E. Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:58
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C09D193/00; C09D193/04; F; F16; F16B; F16B15/00; F16B15/0092
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
A coating composition particularly useful for coating on nails comprising an emulsified mixture of: a. from about 50 to about 80 percent by weight of resin solids of rosin or a rosin-like resin which melts at a temperature of from about 60°C to about 150°C, dissolved in an organic solvent; and b. from about 20 to about 50% by weight of resin solids of an ethylene copolymer or terpolymer comprising from about 60 to about 90 percent by weight ethylene and from about 10 to about 40 percent by weight of an ethylenically unsaturated carboxylic acid or an ester thereof free of groups which are reactive of said rosin or rosin-like resin, said ethylene copolymer or terpolymer dissolved in a hot volatile aqueous alkali solution.
Claim 2
Dependent Claim
125 words
A coating composition particularly useful for coating on nails comprising an emulsified mixture of: a. from about 50 to about 80 percent by weight of resin solids of rosin or a rosin-like resin which melts at a temperature of from about 60°C to about 150°C, dissolved in an organic solvent; and b. from about 20 to about 50% by weight of resin solids of an ethylene copolymer or terpolymer comprising from about 60 to about 90 percent by weight ethylene and from about 10 to about 40 percent by weight of an ethylenically unsaturated carboxylic acid or an ester thereof free of groups which are reactive of said rosin or rosin-like resin, said ethylene copolymer or terpolymer dissolved in a hot volatile aqueous alkali solution.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the total resin solids is from about 20 to about 40 weight percent of the emulsion.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein the rosin or rosin-like resin comprises from about 67 to about 75 percent by weight of the total resin solids.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |