US3205573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brazing aluminum to a ferrous metal
Assignee: DOMINICK MONACO
•
Filing: 1963-01-31
•
Granted: 1965-09-14
•
Expires: 1983-01-31
Abstract
No abstract record available.
Inventors
- 👤 Reed E Seal
- 👤 Robert R Shellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/002; C; C23; C23C; C23C2/00; C23C2/02; C23C2/024; F; F16; F16L; F16L13/00; F16L13/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
241 words
THE METHOD OF BRAZING A PIECE OF ALUMINUM OR AN ALLOY COMPOSED LARGELY OF ALUMINUM TO A PIECE OF FERROUS METAL WHICH COMPRISES: DEGREASING THE SURFACE OF THE FERROUS METAL; CLEANING THE SURFACE OF THE FERROUS METAL; MASKING THE PORTION OF THE SURFACE OF THE FERROUS METAL WHICH IS TO REMAIN UNCOATED; DIPPING THE FERROUS METAL IN MOLTEN METAL COMPOSED LARGELY OF ALUMINUM AND HAVING A TEMPERATURE OF THE ORDER BETWEEN 1250*F. AND 1380*F. FOR A TIME SUFFICIENT FOR THE MASS TO REACH THE TEMPERATURE OF THE MOLTEN METAL; LEAVING THE FERROUS METAL IN THE MOLTEN METAL FOR A PERIOD OF ABOUT THREE TO FIVE MINUTES AFTER THE MASS REACHES THE TEMPERATURE OF THE MOLTEN METAL; CLEANING THE COATED FERROUS METAL PIECE; CLEANING THE ALUMINUM PIECE; MATING THE PORTIONS OF BOTH PIECES TO BE JOINED TOGETHER AND HOLDING THEM IN A FIXTURE IN THE MATED POSITION; APPLYING A BRAZING ALLOY TO THE MATED JOINT; DRYING THE MATED COMBINATION; PREHEATING THE MATED COMBINATION FOR SUFFICIENT TIME TO OBTAIN SOAK AT TEMPERATURE BELOW THE MELTING POINTS OF THE METAL PIECES AND THE BRAZING ALLOY; INSERTING THE FIXTURE AND MATED COMBINATION IN A FLUX BATH HAVING A TEMPERATURE ABOVE THE MELTING POINT OF THE BRAZING ALLOY AND BELOW THE MELTING POINTS OF THE METAL PEICES FOR A PERIOD OF TIME OF THE ORDER OF 5 TO 300 SECONDS; COOLING THE MATED COMBINATION; AND REMOVING THE EXCESS FLUX FROM THE SURFACES OF THE MATED COMBINATION.
Claim 2
Independent Claim
241 words
THE METHOD OF BRAZING A PIECE OF ALUMINUM OR AN ALLOY COMPOSED LARGELY OF ALUMINUM TO A PIECE OF FERROUS METAL WHICH COMPRISES: DEGREASING THE SURFACE OF THE FERROUS METAL; CLEANING THE SURFACE OF THE FERROUS METAL; MASKING THE PORTION OF THE SURFACE OF THE FERROUS METAL WHICH IS TO REMAIN UNCOATED; DIPPING THE FERROUS METAL IN MOLTEN METAL COMPOSED LARGELY OF ALUMINUM AND HAVING A TEMPERATURE OF THE ORDER BETWEEN 1250*F. AND 1380*F. FOR A TIME SUFFICIENT FOR THE MASS TO REACH THE TEMPERATURE OF THE MOLTEN METAL; LEAVING THE FERROUS METAL IN THE MOLTEN METAL FOR A PERIOD OF ABOUT THREE TO FIVE MINUTES AFTER THE MASS REACHES THE TEMPERATURE OF THE MOLTEN METAL; CLEANING THE COATED FERROUS METAL PIECE; CLEANING THE ALUMINUM PIECE; MATING THE PORTIONS OF BOTH PIECES TO BE JOINED TOGETHER AND HOLDING THEM IN A FIXTURE IN THE MATED POSITION; APPLYING A BRAZING ALLOY TO THE MATED JOINT; DRYING THE MATED COMBINATION; PREHEATING THE MATED COMBINATION FOR SUFFICIENT TIME TO OBTAIN SOAK AT TEMPERATURE BELOW THE MELTING POINTS OF THE METAL PIECES AND THE BRAZING ALLOY; INSERTING THE FIXTURE AND MATED COMBINATION IN A FLUX BATH HAVING A TEMPERATURE ABOVE THE MELTING POINT OF THE BRAZING ALLOY AND BELOW THE MELTING POINTS OF THE METAL PEICES FOR A PERIOD OF TIME OF THE ORDER OF 5 TO 300 SECONDS; COOLING THE MATED COMBINATION; AND REMOVING THE EXCESS FLUX FROM THE SURFACES OF THE MATED COMBINATION.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |