US3923002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering machine accessory
Assignee: Individual
•
Filing: 1973-08-24
•
Granted: 1975-12-02
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Expires: 1993-08-24
Abstract
Abstract A solder removing accessory for wave soldering machines. The accessory is comprised of a rotatable metal brush which is held lightly against a printed circuit board immediately after it has passed over a molten solder bath and before it hardens. The brush accessory has heat conducting characteristics and, by capillary action, removes excess solder and spreads the remaining solder in a controlled, uniform, thin film manner over the conductive portions of the printed circuit board.
Inventors
- 👤 Louis Vanyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:07
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/018; B23K1/08; B23K1/085; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3465; H05K3/3468; H05K2203/00; H05K2203/02; H05K2203/0257
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
In a soldering machine for applying a coating of solder to the conductive portions of a printed circuit board by passing the board through a bath of molten solder, the improvement comprising: a wire metal brush capable of removing solder from a surface by capillary action mounted on the soldering machine adjacent to the bath of molten solder; means for removing said brush from an idle position to a ready position in which the brush contacts the liquid solder on the printed circuit board immediately after it passes through the molten solder bath; in said ready position said brush being disposed to withdraw excess solder from said printed circuit board solely by capillary action and return the excess solder to the bath of molten solder.
Claim 2
Dependent Claim
125 words
In a soldering machine for applying a coating of solder to the conductive portions of a printed circuit board by passing the board through a bath of molten solder, the improvement comprising: a wire metal brush capable of removing solder from a surface by capillary action mounted on the soldering machine adjacent to the bath of molten solder; means for removing said brush from an idle position to a ready position in which the brush contacts the liquid solder on the printed circuit board immediately after it passes through the molten solder bath; in said ready position said brush being disposed to withdraw excess solder from said printed circuit board solely by capillary action and return the excess solder to the bath of molten solder.
Claim 3
Dependent Claim
25 words
The solder machine of claim 1 wherein the brush is comprised of a metal which has good heat conductivity and is readily wettable with solder.
Claim 4
Dependent Claim
19 words
The solder machine of claim 2 including means for preheating and pretinning the brush with a coating of solder.
Claim 5
Dependent Claim
32 words
The solder machine of claim 3 wherein the means for preheating and pretinning the brush comprises mounting the brush so that at idle position it lies in a pool of molten solder.
Claim 6
Dependent Claim
51 words
The solder machine of claim 4 wherein said means for moving said brush from an idle position to a ready position comprises a rotatable rod supporting the brush; said rotatable rod being mounted on the soldering machine with its axis perpendicular to the direction of motion of said printed circuit board.
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 |