US3853606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated metal fasteners
Assignee: United States Steel Corp
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Filing: 1972-10-04
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Granted: 1974-12-10
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Expires: 1992-10-04
Abstract
Abstract Coated nails and other driven fasteners designed to increase the force required 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 of rosin or a rosin-like resin in an ethylene co- or terpolymer. The coating method comprises dissolving the rosin or rosin-like resin in an organic solvent and dispersing the co- or terpolymer in a hot aqueous alkali solution followed by mixing the two compositions prior to coating the metal fasteners.
Inventors
- 👤 R Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
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; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/902; Y10S411/903; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A PROCESS FOR COATING A METAL FASTENER USEFUL FOR FRICTIONAL INSERTION IN WOOD OR LIKE COMPRISING: DISSOLVING IN AN ORGANIC SOLVENT 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; DISPERSING IN A HOT VOLATILE AQUEOUS ALKALI SOLUTION ABOUT 20 TO ABOUT 50 PERCENT BY WEIGHT OF RESIN SOLIDS OF AN ETHYLENE COPOLYMER OR TERPOLYMER COMPRISING FROM ABOUT 75 TO ABOUT 90 PERCENT BY WEIGHT ETHYLENE AND FROM ABOUT 10 TO ABOUT 40 PERCENT BY WEIGHT OF AN ETHYLENICALLY UNSATURATED CARBOXTLIC ACID OR AN ESTER THEREOF FREE OF GROUPS WHICH ARE REACTIVE WITH SAID ROSIN OR ROSIN-LIKE RESIN; ADDING SAID ROSIN OR ROSIN-LIKE RESIN SOLUTION TO SAID ETHYLENE COPOLYMER OR TERPOLYMER DISPERSION TO FORM A MIXTURE; EMULSIFYING SAID MIXTURE; DIPPING SAID METAL FASTENER IN SAID MIXTURE; AND DRYING SAID COATED METAL FASTENER.
Claim 2
Dependent Claim
153 words
A PROCESS FOR COATING A METAL FASTENER USEFUL FOR FRICTIONAL INSERTION IN WOOD OR LIKE COMPRISING: DISSOLVING IN AN ORGANIC SOLVENT 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; DISPERSING IN A HOT VOLATILE AQUEOUS ALKALI SOLUTION ABOUT 20 TO ABOUT 50 PERCENT BY WEIGHT OF RESIN SOLIDS OF AN ETHYLENE COPOLYMER OR TERPOLYMER COMPRISING FROM ABOUT 75 TO ABOUT 90 PERCENT BY WEIGHT ETHYLENE AND FROM ABOUT 10 TO ABOUT 40 PERCENT BY WEIGHT OF AN ETHYLENICALLY UNSATURATED CARBOXTLIC ACID OR AN ESTER THEREOF FREE OF GROUPS WHICH ARE REACTIVE WITH SAID ROSIN OR ROSIN-LIKE RESIN; ADDING SAID ROSIN OR ROSIN-LIKE RESIN SOLUTION TO SAID ETHYLENE COPOLYMER OR TERPOLYMER DISPERSION TO FORM A MIXTURE; EMULSIFYING SAID MIXTURE; DIPPING SAID METAL FASTENER IN SAID MIXTURE; AND DRYING SAID COATED METAL FASTENER.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the ethylene polymer is a copolymer comprising ethylene and acrylic acid.
Claim 4
Dependent Claim
20 words
The method of claim 2 wherein the acrylic acid comprises about 18 to 20 percent by weight of the copolymer.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein the ethylenically unsaturated carboxylic acid is acrylic acid or methacrylic acid and the ester is vinyl acetate.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein the ethylene polymer is a terpolymer comprising ethylene, vinyl acetate and acrylic acid.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein the rosin-like resin is indene-coumarone, petroleum, resin polyterpene, fossil resin or coal tar pitch.
Claim 8
Dependent Claim
17 words
The method of claim 6 wherein said resin has an average molecular weight of less than 2,000.
Claim 9
Dependent Claim
27 words
The method of claim 1 wherein said rosin or rosin-like resin comprises from about 67 to about 75 weight percent of the resin solids in the composition.
Claim 10
Dependent Claim
26 words
A coated metal fastener useful for frictional insertion in wood or the like and having advanced adhesion, said fastener manufactured by the method of claim 1.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |