Patent US3989179A successfully refreshed from Google Patents.
US3989179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of dip soldering
Assignee: Valeo Engine Cooling Inc
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Filing: 1975-09-09
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Granted: 1976-11-02
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Expires: 1995-09-09
Abstract
Abstract A method is provided for eliminating "icicles" or ligaments and other manifestations of dripping solder from articles which are dip soldered by vibrating the articles simultaneously with removing them from the solder bath and continuing to vibrate the articles until the solder thereon has at least levelled.
Inventors
- 👤 John N. Antonevich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/0008; B23K1/0012; B23K3/00; B23K3/06; B23K3/0646; B23K3/0669; B23K3/0684
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A method of eliminating "icicles" and drippings of solder from generally horizontally extending surfaces including U-shaped portions of heat exchangers and the like, which surfaces have been dipped in a molten bath of solder and removed from said solder bath comprising the steps of accelerating and decelerating the parts simultaneously with removing them from the solder bath and continuing to accelerate and decelerate the parts until all solder thereon has levelled itself over the dipped surfaces.
Claim 2
Independent Claim
76 words
A method of eliminating "icicles" and drippings of solder from generally horizontally extending surfaces including U-shaped portions of heat exchangers and the like, which surfaces have been dipped in a molten bath of solder and removed from said solder bath comprising the steps of accelerating and decelerating the parts simultaneously with removing them from the solder bath and continuing to accelerate and decelerate the parts until all solder thereon has levelled itself over the dipped surfaces.
Claim 3
Dependent Claim
35 words
A method as claimed in claim 1 wherein the parts are vibrated in the solder bath and continuously thereafter during removal from the bath to accelerate and decelerate them until all solder thereon has solidified.
Claim 4
Dependent Claim
14 words
A method as claimed in claim 1 wherein the vibrations are at ultrasonic frequencies.
Claim 5
Dependent Claim
20 words
A method as claimed in claim 1 wherein successive impacts are applied to the parts to accelerate and decelerate them.
Claim 6
Dependent Claim
24 words
A method as claimed in claim 1 wherein at least one impact is applied to the parts to accelerate them and level solder thereon.
Claim 7
Independent Claim
77 words
A method of eliminating "icicles" and drippings of solder from generally horizontally extending surfaces including U-shaped portions of heat exchangers and the like, which surfaces have been dipped in a molten bath of solder and removed from said solder bath comprising the steps of accelerating and decelerating said parts immediately after withdrawal from the solder bath and until the solder has levelled itself over the dipped surfaces and the solidus temperature of the solder has been reached.
Claim 8
Independent Claim
77 words
A method of eliminating "icicles" and drippings of solder from generally horizontally extending surfaces including U-shaped portions of heat exchangers and the like, which surfaces have been dipped in a molten bath of solder and removed from said solder bath comprising the steps of accelerating and decelerating said parts immediately after withdrawal from the solder bath and until the solder has levelled itself over the dipped surfaces and the solidus temperature of the solder has been reached.
References Cited (Backward Citations)
US2485444A
Cited
US3834015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |