US3897336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of regeneration of solder, particularly of tin-lead solders, and an apparatus for application the method
Assignee: Wrocław University of Science and Technology
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Filing: 1974-01-11
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Granted: 1975-07-29
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Expires: 1994-01-11
Abstract
Abstract A method and apparatus for the regeneration of solder contained in a tank comprising a partition dividing the tank into two chambers which intercommunicate with one another above the partition. A filter is immersed in the solder in one chamber and a pump is immersed in the solder in the other chamber such that circulation of the solder is produced in the tank through the filter and pump. The filter and pump are supported as a unit on the top of the partition and are near the surface of the solder so that a free counter circulation is produced in the solder above the partition which is opposite the direction of circulation of the solder through the filter and pump.
Inventors
- 👤 Andrzej Bydalek
- 👤 Ferdynand Romankiewicz
- 👤 Jan Romer
- 👤 Edmund Tomasik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:36
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; C22B9/023; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
A METHOD FOR THE REGENERATION OF SOLDER CONTAINED IN A TANK, SAID METHOD COMPRISING DIVIDING THE TANK INTO TWO CHAMBERS BY MEANS OF A PARTITION EXTENDING UPWARDLY IN THE TANK TO A LEVEL BENEATH THE LEVEL OF SOLDER CONTAINED IN THE TANK WHEREBY THE CHAMBERS ARE IN COMMUNICATION WITH ONE ANOTHER ABOVE THE PARTITION, IMMERSING A FILTER IN ONE CHAMBER IN THE TANK, CONNECTING A PUMP TO THE FILTER WITH THE OUTLET OF THE PUMP DISPOSED IN THE OTHER CHAMBER SUCH THAT CIRCULATION OF THE SOLDER IS PRODUCED IN THE TANK THROUGH THE FILTER QAND PUMP, AND POSITIONING THE FILTER AND PUMP NEAR THE SURFACE OF THE SOLDER AND PROXIMATE THE UPPER EDGE OF THE PARTITION SUCH THAT A FREE COUNTER CIRCULATION IS PRODUCED IN THE SOLDER ABOVE THE PARTITION WHICH IS OPPOSITE THE DIRECTION OF CIRCULATION OF THE SOLDER THROUGH THE FILTER AND PUMP.
Claim 2
Independent Claim
145 words
A METHOD FOR THE REGENERATION OF SOLDER CONTAINED IN A TANK, SAID METHOD COMPRISING DIVIDING THE TANK INTO TWO CHAMBERS BY MEANS OF A PARTITION EXTENDING UPWARDLY IN THE TANK TO A LEVEL BENEATH THE LEVEL OF SOLDER CONTAINED IN THE TANK WHEREBY THE CHAMBERS ARE IN COMMUNICATION WITH ONE ANOTHER ABOVE THE PARTITION, IMMERSING A FILTER IN ONE CHAMBER IN THE TANK, CONNECTING A PUMP TO THE FILTER WITH THE OUTLET OF THE PUMP DISPOSED IN THE OTHER CHAMBER SUCH THAT CIRCULATION OF THE SOLDER IS PRODUCED IN THE TANK THROUGH THE FILTER QAND PUMP, AND POSITIONING THE FILTER AND PUMP NEAR THE SURFACE OF THE SOLDER AND PROXIMATE THE UPPER EDGE OF THE PARTITION SUCH THAT A FREE COUNTER CIRCULATION IS PRODUCED IN THE SOLDER ABOVE THE PARTITION WHICH IS OPPOSITE THE DIRECTION OF CIRCULATION OF THE SOLDER THROUGH THE FILTER AND PUMP.
Claim 3
Dependent Claim
22 words
A method as claimed in claim 1 wherein said pump produces a pressure difference across the filter of 0.1 to 0.9 kg/cm2.
Claim 4
Dependent Claim
16 words
A method as claimed in claim 2 wherein said pressure difference is 0.3 to 0.4 kg/cm2.
Claim 5
Dependent Claim
15 words
A method as claimed in claim 2 wherein said filter is a ceramic porous material.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 2 comprising supporting said filter on said partition.
Claim 7
Dependent Claim
19 words
A method as claimed in claim 1 comprising driving said pump from a motor externally supported on said tank.
Claim 8
Dependent Claim
29 words
A method as claimed in claim 1 wherein said partition extends to a height of between about 0.8 and 0.95 of the height of the solder in the tank.
Claim 9
Dependent Claim
147 words
APPARATUS FOR THE REGENERATION OF SOLDER CONTAINED IN A TANK, SAID APPARATUS COMPRISING A PARTITION EXTENDING UPWARDLY IN SAID TANK OVER A PORTION OF THE HEIGHT THEREOF TO DIVIDED THE TANK INTO TWO CHAMBERS WHICH INTERCOMMUNICATE WITH ONE ANOTHER ABOVE THE PARTITION, A FILTER DISPOSED IN ONE OF SAID CHAMBERS, A PUMP DISPOSED IN THE OTHER OF SAID CHAMBERS, A CONNECTING PIPE BETWEEN AID FILTER AND PUMP FORMING AN ASSEMBLY THEREWITH SUPPORTED ON SAID PARTITION, DRIVE MEANS FOR SAID PUMP SUPPORTED EXTERNALLY OF SAID TANK FOR PRODUCING CIRCULATION OF SOLDER IN SAID TANK FROM ONE CHAMBER TO THE OTHER THROUGH SAID FILTER AND PUMP, THE SOLDER BEING CONTAINED IN SAID TANK TO A LEVEL ABOVE THE FILTER AND PUMP TO PRODUCE A FREE COUNTER CIRCULATION IN THE SOLDER ABOVE THE PARTITION IN A DIRECTION OPPOSITE THE DIRECTION OF CIRCULATION OF THE SOLDER THROUGH THE FILTER AND PUMP.
Claim 10
Dependent Claim
147 words
APPARATUS FOR THE REGENERATION OF SOLDER CONTAINED IN A TANK, SAID APPARATUS COMPRISING A PARTITION EXTENDING UPWARDLY IN SAID TANK OVER A PORTION OF THE HEIGHT THEREOF TO DIVIDED THE TANK INTO TWO CHAMBERS WHICH INTERCOMMUNICATE WITH ONE ANOTHER ABOVE THE PARTITION, A FILTER DISPOSED IN ONE OF SAID CHAMBERS, A PUMP DISPOSED IN THE OTHER OF SAID CHAMBERS, A CONNECTING PIPE BETWEEN AID FILTER AND PUMP FORMING AN ASSEMBLY THEREWITH SUPPORTED ON SAID PARTITION, DRIVE MEANS FOR SAID PUMP SUPPORTED EXTERNALLY OF SAID TANK FOR PRODUCING CIRCULATION OF SOLDER IN SAID TANK FROM ONE CHAMBER TO THE OTHER THROUGH SAID FILTER AND PUMP, THE SOLDER BEING CONTAINED IN SAID TANK TO A LEVEL ABOVE THE FILTER AND PUMP TO PRODUCE A FREE COUNTER CIRCULATION IN THE SOLDER ABOVE THE PARTITION IN A DIRECTION OPPOSITE THE DIRECTION OF CIRCULATION OF THE SOLDER THROUGH THE FILTER AND PUMP.
Claim 11
Dependent Claim
27 words
Apparatus as claimed in claim 8 wherein the partition extends to a height of between 0.8 and 0.95 of the height of the solder in the tank.
Claim 12
Dependent Claim
21 words
Apparatus as claimed in claim 8 wherein said pump produces a pressure difference across the filter of 0.1 to 0.9 kg/cm2.
Claim 13
Dependent Claim
15 words
Apparatus as claimed in claim 10 wherein said pressure difference is 0.3 to 0.4 kg/cm2.
Claim 14
Dependent Claim
14 words
Apparatus as claimed in claim 8 wherein said filter is a ceramic porous material.
Claim 15
Dependent Claim
27 words
Apparatus as claimed in claim 8 wherein said filter comprises a housing secured to said connecting pipe, and a removable filter element tightly fitted in said housing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |