Patent US3565319A successfully refreshed from Google Patents.
US3565319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for application of solder to circuit boards
Assignee: BANNER IND Inc
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Filing: 1967-05-15
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Granted: 1971-02-23
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Expires: 1987-05-15
Abstract
Abstract A soldering apparatus comprising an outer tank for holding a supply of molten solder, an inner pressure tank and solder duct means which directs the flow of solder to avoid direct flow and any turbulence of solder in the duct inlet.
Inventors
- 👤 Hans Peter Eschenbrucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:45
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; B23K3/0646; B23K3/0653; B23K2101/00; B23K2101/36; B23K2101/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A soldering machine comprising: an outer tank for holding a supply of molten solder; an inner pressure tank disposed in said outer tank having an intake opening disposed in said supply of molten solder; solder duct means comprising a duct having an inlet disposed in said pressure tank and an outlet, said duct inlet projecting a substantial distance into and across said pressure tank and across the direction of flow of solder therein from said intake to avoid direct flow and any turbulence of solder in the duct inlet from said intake whereby pressure created in said duct provides a more uniform flow of molten solder through said duct; and means for producing a flow of molten solder from said outer tank and into said inner tank through said intake to produce said pressure in said inner tank.
Claim 2
Dependent Claim
138 words
A soldering machine comprising: an outer tank for holding a supply of molten solder; an inner pressure tank disposed in said outer tank having an intake opening disposed in said supply of molten solder; solder duct means comprising a duct having an inlet disposed in said pressure tank and an outlet, said duct inlet projecting a substantial distance into and across said pressure tank and across the direction of flow of solder therein from said intake to avoid direct flow and any turbulence of solder in the duct inlet from said intake whereby pressure created in said duct provides a more uniform flow of molten solder through said duct; and means for producing a flow of molten solder from said outer tank and into said inner tank through said intake to produce said pressure in said inner tank.
Claim 3
Dependent Claim
91 words
The solder machine according to claim 1 in which said duct projects above said pressure tank and the level of the supply of solder in said outer tank, said duct being of approximately uniform width along its major lateral axis and tapered along the other lateral axis to provide an elongated orifice at said outlet to produce a free-standing vertical wave of solder of substantially equal height across the major axis in response to pressure produced in said inner tank capable of raising the level of said solder above said orifice.
Claim 4
Dependent Claim
41 words
The solder machine according to claim 2 in which the solder duct means includes means for adjusting the length of the minor axis of the duct orifice to vary the orifice opening and the narrow dimension of said standing solder wave.
Claim 5
Dependent Claim
92 words
The solder machine according to claim 1 in which an apertured member is disposed diagonally across the interior of said duct, said diagonally disposed apertured member having a larger area than the cross-sectional area of the duct at the position of said member in said duct whereby any turbulence in said pressure tank and coupled through the duct inlet and into the duct is substantially decreased in passing through said member to provide a more uniform flow of solder through said duct without undue restriction to solder flow therethrough to said outlet.
Claim 6
Dependent Claim
45 words
The soldering machine of claim 1 in which said solder duct means includes a plurality of parallel individual ducts projecting above the level of said solder and respective elongated orifices for producing a plurality of elongated parallel, and individual standing solder waves from said orifices.
Claim 7
Dependent Claim
30 words
The soldering machine of claim 1 in which agItator means are provided for producing low frequency vibrations in said molten solder supplied by said flow of solder through said duct.
Claim 8
Dependent Claim
24 words
The soldering machine of claim 6 in which the frequency of vibrations is in the approximate range of 200 to 500 vibrations per minute.
Claim 9
Dependent Claim
116 words
The soldering machine of claim 2 which further includes conveyor means for transporting circuit boards over said solder wave to apply solder to the underside of said circuit boards, said conveyor including a plurality of moveable parallel link belts for transporting said circuit boards having spaces between links providing spaced openings; and carrier means comprising a frame for carrying said printed circuit boards, said frame having a plurality of pins projecting from the underside of the frame and on opposite sides thereof to be received by at least a corresponding opening in respective ones of said link belts for coupling said frame to said link belt and transporting the printed circuit board over said solder wave.
References Cited (Backward Citations)
US2688351A
Cited
US3056370A
Cited
US3000342A
Cited
US3037274A
Cited
US3277566A
Cited
US3266136A
Cited
US3298588A
Cited
US3303983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |