US3140538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a brazed joint
Assignee: Stewart Warner Corp
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Filing: 1960-10-27
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Granted: 1964-07-14
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Expires: 1980-10-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Rutledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:37
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; B; B23; B23K; B23K1/00; B23K1/0008; B23K1/0012; F28F; F28F2275/00; F28F2275/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF JOINING TWO METAL COMPONENTS BY BRAZING SUBSTANTIALLY COMPLEMENTARY SURFACES THEREOF, COMPRISING THE STEPS IN INDENTING AT LEAST ONE OF THE SURFACES TO BE BRAZED WITH ONE OR MORE INDENTIONS EXTENDING ACROSS THE SURFACE AND CAUSING LOCALIZED PROJECTIONS ADJACENT EACH OF THE INDENTIONS RAISED FROM THE NORMAL CONTOUR OF THE SURFACE, BRINGING THE SURFACES OF THE COMPONENTS WHICH ARE TO BE BRAZED TOGETHER INTO CLOSE PROXIMITY TO EACH OTHER AND THE BRAZING FILLER METAL UNTIL THE PROJECTIONS ABUT FORMING A SOLID STACKED ASSEMBLY, AND HEATING THE COMPONENTS ND FILLER METAL AT LEAST TO THE MELTING POINT OF THE FILLER METAL BY DIPPING THE COMPONENTS WITH THE FILLER METAL INTO A MOLTEN FLUX BATH TO CAUSE THE FILLER METAL TO FLOW BETWEN THE SURFACES REMOTE OF THE PROJECTIONS HELD APART BY THE PROJECTIONS ABUTTING THE OPPOSITE SURFACE INTO BRAZING ENGAGEMENT AND CONDITION WITH THE COMPONENT SURFACES.
Claim 2
Independent Claim
147 words
THE METHOD OF JOINING TWO METAL COMPONENTS BY BRAZING SUBSTANTIALLY COMPLEMENTARY SURFACES THEREOF, COMPRISING THE STEPS IN INDENTING AT LEAST ONE OF THE SURFACES TO BE BRAZED WITH ONE OR MORE INDENTIONS EXTENDING ACROSS THE SURFACE AND CAUSING LOCALIZED PROJECTIONS ADJACENT EACH OF THE INDENTIONS RAISED FROM THE NORMAL CONTOUR OF THE SURFACE, BRINGING THE SURFACES OF THE COMPONENTS WHICH ARE TO BE BRAZED TOGETHER INTO CLOSE PROXIMITY TO EACH OTHER AND THE BRAZING FILLER METAL UNTIL THE PROJECTIONS ABUT FORMING A SOLID STACKED ASSEMBLY, AND HEATING THE COMPONENTS ND FILLER METAL AT LEAST TO THE MELTING POINT OF THE FILLER METAL BY DIPPING THE COMPONENTS WITH THE FILLER METAL INTO A MOLTEN FLUX BATH TO CAUSE THE FILLER METAL TO FLOW BETWEN THE SURFACES REMOTE OF THE PROJECTIONS HELD APART BY THE PROJECTIONS ABUTTING THE OPPOSITE SURFACE INTO BRAZING ENGAGEMENT AND CONDITION WITH THE COMPONENT SURFACES.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |