US4090654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically soldering components to printed-circuit boards
Assignee: Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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Filing: 1977-07-01
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Granted: 1978-05-23
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Expires: 1997-07-01
Abstract
Abstract An apparatus for automatically soldering components to a printed-circuit board in accordance with the "drag bath" process wherein the board is moved through a lowered section with its undersurface in contact with a solder bath and withdrawn therefrom perpendicularly by lift means.
Inventors
- 👤 Willi Volkert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:28
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0646; B23K3/0669; B23K3/0676; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3465; H05K3/3468
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
An apparatus for soldering components to a printed-circuit board in accordance with the "drag bath soldering" process including in combination a solder bath, transport frames for supporting said printed-circuit board, straps supporting said transport frames on either side of said bath, guide tracks in which said straps are supported for movement of said transport frames over said bath, a lowered section of said guide tracks where the under surface of said printed-circuit board supported by said transport frames being moved through said section will be in contact with said bath, means for moving said straps whereby said transport frames will enter, move through and exit said lowered section, and a lift means for lifting said printed-circuit board perpendicularly from contact with said bath upon exiting said lowered section.
Claim 2
Independent Claim
128 words
An apparatus for soldering components to a printed-circuit board in accordance with the "drag bath soldering" process including in combination a solder bath, transport frames for supporting said printed-circuit board, straps supporting said transport frames on either side of said bath, guide tracks in which said straps are supported for movement of said transport frames over said bath, a lowered section of said guide tracks where the under surface of said printed-circuit board supported by said transport frames being moved through said section will be in contact with said bath, means for moving said straps whereby said transport frames will enter, move through and exit said lowered section, and a lift means for lifting said printed-circuit board perpendicularly from contact with said bath upon exiting said lowered section.
Claim 3
Dependent Claim
15 words
An apparatus in accordance with claim 1 in which the strap is webbed asbestos fibre.
Claim 4
Dependent Claim
18 words
An apparatus in accordance with claim 1 in which the strap is heat-stable plastic reinforced by glass fibres.
Claim 5
Dependent Claim
24 words
An apparatus in accordance with claim 1 in which the lift means is energized upon arrival of a transport frame at a switch position.
Claim 6
Dependent Claim
14 words
An apparatus in accordance with claim 4 in which the switch is electro-optically operated.
Claim 7
Dependent Claim
20 words
An apparatus in accordance with claim 1 in which the lift means is energized by manual operation of a switch.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |