Patent US4081575A successfully refreshed from Google Patents.
US4081575A
Expired / Lapsed
US
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Method of flux coating metal wick
Assignee: Individual
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Filing: 1976-04-30
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Granted: 1978-03-28
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Expires: 1996-04-30
Abstract
Abstract A metal wick to be used for the absorption of molten solder is deoxidized and flux coated by a process that does not involve the application of heat to the wick or the flux. In one embodiment the wick is cleaned by heating in a reducing atmosphere and is then immersed in a coating bath containing a solution of a rosin flux in an organic solvent. On leaving the bath the welted wick enters a low-pressure chamber in which the solvent rapidly evaporates at room temperature. In another embodiment the deoxidized wick is coated with comminuted solid resin by electro-static means.
Inventors
- 👤 Ernst Spirig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:14
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/018
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
The method of manufacturing a flux-coated wick of metal strands, which comprises the steps of: (a) deoxidizing the metal strand wick; (b) immediately coating the deoxidized wick with a solution of a fluxing material in a solvent; and (c) drying the solution of fluxing material and solvent under a vacuum substantially below atmospheric pressure and without raising the temperature of said wick or said solution.
Claim 2
Independent Claim
65 words
The method of manufacturing a flux-coated wick of metal strands, which comprises the steps of: (a) deoxidizing the metal strand wick; (b) immediately coating the deoxidized wick with a solution of a fluxing material in a solvent; and (c) drying the solution of fluxing material and solvent under a vacuum substantially below atmospheric pressure and without raising the temperature of said wick or said solution.
Claim 3
Dependent Claim
23 words
The method as recited in claim 1, wherein said coating step is effected by immersing said wick in a bath of said solution.
Claim 4
Dependent Claim
30 words
The method as defined in claim 1, wherein said solvent comprises a volatile solvent; and further wherein the vacuum level is such that the solvent evaporates rapidly at room temperature.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |