US4378296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux filter
Assignee: AT&T Inc
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Filing: 1981-06-29
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Granted: 1983-03-29
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Expires: 2001-06-29
Abstract
Abstract A filter (21) for removing flux from a hot heat transfer liquid-flux mixture. The heat transfers liquid-flux mixture is directed into a chamber (41) having a plurality of spaced, hollow members (64--64) through which a coolant passes. Upon being cooled the flux deposits on the surface of the members (64--64). The liquid, with substantial portions of the flux removed therefrom, then leaves the filter (21).
Inventors
- 👤 Roy C. Carlson, Jr.
- 👤 Edward J. March
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:01
CPC Classifications
B; B01; B01D; B01D37/00; B23; B23K; B23K1/00; B23K1/012; B23K1/015
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A method of removing solder flux from a liquid-flux mixture, the method comprising the steps of: directing the liquid-flux mixture into a chamber having a plurality of spaced, substantially planar, hollow members arranged in a plurality of staggered, parallel rows within the chamber, said mixture being directed into said chamber in a direction normal to the planar, hollow members; passing a coolant through the hollow members to lower the temperature of the mixture to increase the viscosity of the flux to cause said flux to deposit on said planar hollow members; accumulating a predetermined amount of the directed liquid-flux mixture within the chamber; and discharging the liquid from the chamber after a predetermined period of time.
Claim 2
Independent Claim
116 words
A method of removing solder flux from a liquid-flux mixture, the method comprising the steps of: directing the liquid-flux mixture into a chamber having a plurality of spaced, substantially planar, hollow members arranged in a plurality of staggered, parallel rows within the chamber, said mixture being directed into said chamber in a direction normal to the planar, hollow members; passing a coolant through the hollow members to lower the temperature of the mixture to increase the viscosity of the flux to cause said flux to deposit on said planar hollow members; accumulating a predetermined amount of the directed liquid-flux mixture within the chamber; and discharging the liquid from the chamber after a predetermined period of time.
Claim 3
Independent Claim
130 words
An apparatus for removing solder flux from a liquid-flux mixture, the apparatus comprising: a chamber adapted to accumulate the liquid-flux mixture; a plurality of spaced, substantially planar, hollow, members arranged in a plurality of staggered, parallel rows mounted within the chamber, through which a coolant flows to lower the temperature of the mixture to increase the viscosity of the flux to cause said flux to deposit on said planar hollow members; an input located in the chamber, above the substantially planar hollow members, through which the liquid-flux mixture is directed into the chamber in a direction normal to the planar hollow members; and an output located in the chamber below the substantially planar hollow members, through which the liquid is discharged from the chamber after a predetermined period of time.
Claim 4
Independent Claim
130 words
An apparatus for removing solder flux from a liquid-flux mixture, the apparatus comprising: a chamber adapted to accumulate the liquid-flux mixture; a plurality of spaced, substantially planar, hollow, members arranged in a plurality of staggered, parallel rows mounted within the chamber, through which a coolant flows to lower the temperature of the mixture to increase the viscosity of the flux to cause said flux to deposit on said planar hollow members; an input located in the chamber, above the substantially planar hollow members, through which the liquid-flux mixture is directed into the chamber in a direction normal to the planar hollow members; and an output located in the chamber below the substantially planar hollow members, through which the liquid is discharged from the chamber after a predetermined period of time.
Claim 5
Dependent Claim
72 words
The apparatus as set forth in claim 2, wherein the chamber is further comprised of: a removable coverplate; first and second plenums fixedly mounted to and depending from the coverplate; the substantially planar, hollow members extend between said first and second plenums; and an input line and output line passing through the coverplate and communicating with the first and second plenums, respectively, to flow coolant through the plenums and the hollow members.
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) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |