US3588998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating articles with a liquid
Assignee: AT&T Inc
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Filing: 1968-07-16
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Granted: 1971-06-29
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Expires: 1988-07-16
Abstract
Abstract A DRAG LINE SOLDERING APPARATUS INCLUDES TWO CHAINS MOVING OVER SPROCKET WHEELS AND MOUNTING A SUCCESSION OF MASKED CIRCUIT BOARDS IN ARTICLE CARRIERS FOR FLOATATION UPON THE TOP SURFACE OF MOLTEN SOLDER IN A TANK. ADJUSTMENT OF THE POSITION OF CERTAIN OF THE SPROCKET WHEELS SELECTS A CRITICAL ANGLE OF WITHDRAWAL OF THE BOARDS FROM CONTACT WITH THE MOLTEN SOLDER, ELIMINATING SUBSTANTIALLY ALL FORMATION OF "ICICLES" OF SOLIDIFIED SOLDER. ADJUSTMENT OF THE POSITION OF OTHERS OF THE SPROCKET WHEELS SELECTS A DESIRED ANGLE OF CONTACT AND A DESIRED LENGTH OF CONTACT PATH BETWEEN THE BOARDS AND THE TOP SURFACE OF THE MOLTEN SOLDER.
Inventors
- 👤 Vincent A Corsaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:27
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0646; B23K3/0669; B23K3/0676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |