Patent US2844867A successfully refreshed from Google Patents.
US2844867A
Expired / Lapsed
US
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Dip brazing
Assignee: Martin Co
•
Filing: 1955-06-24
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Granted: 1958-07-29
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Donald E Wernz
- 👤 Melvin M Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:13
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/3006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF DIP-BRAZING PARTS OF TITANIUM USING HIGH MELTING POINT BRAZING MATERIAL AND A MOLTEN SALT BATH OF INERT MATERIAL, WHICH COMPRISES THE STEPS OF ASSEMBLING THE PARTS TO BE JOINED, PLACING THE HIGH MELTING POINT BRAZING MATERIAL AT THE JUNCTURE OF THE PARTS, PREHEATING THE ASSEMBLED PARTS TO A TEMPERATURE IN THE RANGE OF APPROXIMATELY 700*F. TO 800*F., DIPPING THE ASSEMBLED PARTS INTO THE MOLTEN SALT BATH MAINTAINED AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 2100*F. TO 2300*F. TO MELT THE BRAZING MATERIAL AND BRAZE THE PARTS TOGETHER, AND REMOVING THE PARTS FROM THE SALT BATH AND PERMITTING THE SALT TO REMAIN ON THE PARTS TO EXCLUDE THE AIR WHILE THE PARTS ARE COOLING.
Claim 2
Independent Claim
117 words
A METHOD OF DIP-BRAZING PARTS OF TITANIUM USING HIGH MELTING POINT BRAZING MATERIAL AND A MOLTEN SALT BATH OF INERT MATERIAL, WHICH COMPRISES THE STEPS OF ASSEMBLING THE PARTS TO BE JOINED, PLACING THE HIGH MELTING POINT BRAZING MATERIAL AT THE JUNCTURE OF THE PARTS, PREHEATING THE ASSEMBLED PARTS TO A TEMPERATURE IN THE RANGE OF APPROXIMATELY 700*F. TO 800*F., DIPPING THE ASSEMBLED PARTS INTO THE MOLTEN SALT BATH MAINTAINED AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 2100*F. TO 2300*F. TO MELT THE BRAZING MATERIAL AND BRAZE THE PARTS TOGETHER, AND REMOVING THE PARTS FROM THE SALT BATH AND PERMITTING THE SALT TO REMAIN ON THE PARTS TO EXCLUDE THE AIR WHILE THE PARTS ARE COOLING.
References Cited (Backward Citations)
US2732321A
Cited
US2191631A
Cited
US2298996A
Cited
US2443574A
Cited
US2417662A
Cited
US2714760A
Cited
US2786265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |