US2683099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for metal coating tubing
Assignee: Motors Liquidation Co
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Filing: 1950-10-31
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Granted: 1954-07-06
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Expires: 1970-10-31
Abstract
No abstract record available.
Inventors
- 👤 Rea I Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:41
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/38; F; F16; F16C; F16C25/00; F16C25/02; F16C27/00; F16C27/02; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; F16C33/106; F16C33/1075
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
THE METHOD OF BRAZING MULTI-PLY METAL TUBING OR COATING WELDED TUBING WITH A METAL OF LOWER MELTING POINT THAN THAT OF THE TUBING WHICH INCLUDES THE STEPS OF MOVING THE TUBING THROUGH A CHAMBER CONTAINING THE LOWER PART THEREOF A QUANTITY OF THE COATING METAL, WHILE MAINTAINING THE TUBING AT A LEVEL ABOVE THE NORMAL LEVEL OF THE COATING METAL THEREIN WHEN IN A NON-MOLTEN CONDITION, HEATING THE LOWE PART OF SAID CHAMBER IN WHICH THE COATING METAL IS CONTAINED BY SUBJECTING THE LOWER PART OF SUCH CHAMBER TO THE HEATING EFFECT OF A HIGH FREQUENCY ELECTRIC CURRENT TO A DEGREE SUFFICIENT TO MELT SUCH METAL AND TO CAUSE THE LEVEL OF THE MOLTEN METAL IN THE CHAMBER TO RISE ABOVE THE LEVEL OF THE TUBING AS THE LATTER IS MOVED THROUGH THE CHAMBER, SUBJECTING THE TUBING AS IT LEAVES THE CHAMBER TO A BLAST OF NON-OXIDIZING GAS DIRECTED AGAINST THE TUBING AT A POINT RELATIVELY CLOSE TO AN OPENING THROUGH WHICH THE TUBING MOVES OUT OF SAID CHAMBER AND INTRODUCING THE COATING METAL INTO THE CHAMBER IN UNMELTED FOAM AS THE TUBING IS MOVED THROUGH SAID CHAMBER.
Claim 2
Independent Claim
188 words
THE METHOD OF BRAZING MULTI-PLY METAL TUBING OR COATING WELDED TUBING WITH A METAL OF LOWER MELTING POINT THAN THAT OF THE TUBING WHICH INCLUDES THE STEPS OF MOVING THE TUBING THROUGH A CHAMBER CONTAINING THE LOWER PART THEREOF A QUANTITY OF THE COATING METAL, WHILE MAINTAINING THE TUBING AT A LEVEL ABOVE THE NORMAL LEVEL OF THE COATING METAL THEREIN WHEN IN A NON-MOLTEN CONDITION, HEATING THE LOWE PART OF SAID CHAMBER IN WHICH THE COATING METAL IS CONTAINED BY SUBJECTING THE LOWER PART OF SUCH CHAMBER TO THE HEATING EFFECT OF A HIGH FREQUENCY ELECTRIC CURRENT TO A DEGREE SUFFICIENT TO MELT SUCH METAL AND TO CAUSE THE LEVEL OF THE MOLTEN METAL IN THE CHAMBER TO RISE ABOVE THE LEVEL OF THE TUBING AS THE LATTER IS MOVED THROUGH THE CHAMBER, SUBJECTING THE TUBING AS IT LEAVES THE CHAMBER TO A BLAST OF NON-OXIDIZING GAS DIRECTED AGAINST THE TUBING AT A POINT RELATIVELY CLOSE TO AN OPENING THROUGH WHICH THE TUBING MOVES OUT OF SAID CHAMBER AND INTRODUCING THE COATING METAL INTO THE CHAMBER IN UNMELTED FOAM AS THE TUBING IS MOVED THROUGH SAID CHAMBER.
Claim 3
Dependent Claim
178 words
APPARATUS FOR BRAZING MULTI-PLY METAL TUBING AND FOR COATING WELDED TUBING WITH A METAL OF LOWER MELTING POINT THAN SAID TUBING COMPRISING, IN COMBINATION, A CHAMBER IN WHICH THE TUBING AND THE COATING METAL ARE HEATED, THE LOWER PART OF WHICH IS ADAPTED TO CONTAIN A SUPPLY OF THE COATING METAL, OPENINGS IN THE WALL OF SAID CHAMBER THROUGH WHICH THE TUBE TO BE COATED PASSES, SAID OPENINGS BEING LOCATED ABOVE THE NORMAL LEVEL OF THE UNMELTED COATING METAL IN SAID VESSEL SO THAT THE TUBING PASSES THROUGH SAID CHAMBER AT A POINT ABOVE THAT LEVEL, MEANS FOR MOVING THE TUBING THROUGH THE CHAMBER DURING THE COATING OPERATION, A HEATING COIL SURROUNDING SAID CHAMBER AND CONNECTED TO A SOURCE OF ELECTRIC CURRENT OF HIGH FREQUENCY, SAID COIL BEING EFFECTIVE TO HEAT SAID CHAMBER TO A DEGREE SUFFICIENT TO MELT THE COATING METAL AND TO CAUSE THE MOLTEN METAL TO RISE IN SAID HEATING CHAMBER TO A LEVEL ABOVE THAT OF THE TUBING SO THAT THE TUBING PASSES THROUGH THE COATING METAL AS IT IS MOVED THROUGH SAID CHAMBER.
Claim 4
Dependent Claim
178 words
APPARATUS FOR BRAZING MULTI-PLY METAL TUBING AND FOR COATING WELDED TUBING WITH A METAL OF LOWER MELTING POINT THAN SAID TUBING COMPRISING, IN COMBINATION, A CHAMBER IN WHICH THE TUBING AND THE COATING METAL ARE HEATED, THE LOWER PART OF WHICH IS ADAPTED TO CONTAIN A SUPPLY OF THE COATING METAL, OPENINGS IN THE WALL OF SAID CHAMBER THROUGH WHICH THE TUBE TO BE COATED PASSES, SAID OPENINGS BEING LOCATED ABOVE THE NORMAL LEVEL OF THE UNMELTED COATING METAL IN SAID VESSEL SO THAT THE TUBING PASSES THROUGH SAID CHAMBER AT A POINT ABOVE THAT LEVEL, MEANS FOR MOVING THE TUBING THROUGH THE CHAMBER DURING THE COATING OPERATION, A HEATING COIL SURROUNDING SAID CHAMBER AND CONNECTED TO A SOURCE OF ELECTRIC CURRENT OF HIGH FREQUENCY, SAID COIL BEING EFFECTIVE TO HEAT SAID CHAMBER TO A DEGREE SUFFICIENT TO MELT THE COATING METAL AND TO CAUSE THE MOLTEN METAL TO RISE IN SAID HEATING CHAMBER TO A LEVEL ABOVE THAT OF THE TUBING SO THAT THE TUBING PASSES THROUGH THE COATING METAL AS IT IS MOVED THROUGH SAID CHAMBER.
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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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |