Patent US3924035A successfully refreshed from Google Patents.
US3924035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating metal with a cleaning agent in a combustible solvent before coating
Assignee: Eltzroth & Ass J M
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Filing: 1973-11-19
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Granted: 1975-12-02
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Expires: 1993-11-19
Abstract
Abstract A process of cleaning a metal in the form of wires, rods, tubes, flat sheets and coiled sheets is provided in which the metal is brought into contact with a flame produced by the combustion of a gaseous fuel under superatmospheric pressure in the presence of a metal cleaning additive dissolved in a combustible solvent.
Inventors
- 👤 Russell C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:27
CPC Classifications
B; B08; B08B; B08B7/00; C; C23; C23G; C23G5/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
109 words
A PROCESS OF CLEANING A METAL IN THE FORM OF WIRES, RODS, TUBES, FLAT SHEETS AND COILED SHEETS, WHICH COMPRISES BRINGING SAID METAL INTO CONTACT WITH A FLAME PRODUCED BY THE COMBUSTION OF A GASEOUS FUEL UNDER SUPERATMOSPHERIC PRESSURE IN THE PRESENCE OF A METAL CLEANING AGENT DISSOLVED IN A COMBUSTIBLE LIQUID SOLVENT AT CONTROLLED TEMPERATURES AND FOR PERIODS OF TIME AND UNDER CONDITIONS SUFFICIENT TO CAUSE COMBUSTION OF SAID SOLVENT AND TO CLEAN SAID METAL SIMULTANEOUSLY WITH THE COMBUSTION OF THE SOLVENT AND PROVIDE A SURFACE ADAPTED TO RECEIVE A PROTECTIVE COATING, WITHOOUT DESTROYING THE PHYSICAL PROPERTIES OF THE METAL, AND THEREAFTER REMOVING SAID METAL FROM SAID FLAME.
Claim 2
Dependent Claim
109 words
A PROCESS OF CLEANING A METAL IN THE FORM OF WIRES, RODS, TUBES, FLAT SHEETS AND COILED SHEETS, WHICH COMPRISES BRINGING SAID METAL INTO CONTACT WITH A FLAME PRODUCED BY THE COMBUSTION OF A GASEOUS FUEL UNDER SUPERATMOSPHERIC PRESSURE IN THE PRESENCE OF A METAL CLEANING AGENT DISSOLVED IN A COMBUSTIBLE LIQUID SOLVENT AT CONTROLLED TEMPERATURES AND FOR PERIODS OF TIME AND UNDER CONDITIONS SUFFICIENT TO CAUSE COMBUSTION OF SAID SOLVENT AND TO CLEAN SAID METAL SIMULTANEOUSLY WITH THE COMBUSTION OF THE SOLVENT AND PROVIDE A SURFACE ADAPTED TO RECEIVE A PROTECTIVE COATING, WITHOOUT DESTROYING THE PHYSICAL PROPERTIES OF THE METAL, AND THEREAFTER REMOVING SAID METAL FROM SAID FLAME.
Claim 3
Dependent Claim
26 words
A process as claimed in claim 1 in which said cleaning agent dissolved in a combustible solvent is a saturated solution of boric acid in methanol.
Claim 4
Dependent Claim
29 words
A process as claimed in claim 1 in which said metal is preheated to a temperature of at least 250*F. prior to bringing it into contact with said flame.
Claim 5
Dependent Claim
27 words
A process as claimed in claim 1 in which a protective coating is applied to said metal after said metal is cleaned and removed from the flame.
Claim 6
Dependent Claim
17 words
A process as claimed in claim 4 in which said protective coating is an organic film-forming coating.
Claim 7
Dependent Claim
32 words
A process as claimed in claim 1 in which said metal is selected from the group consisting of steel and steel alloys, aluminum and aluminum alloys, zinc surfaced steel and zinc alloys.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |