Patent US1959177A successfully refreshed from Google Patents.
US2800711A
Expired / Lapsed
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Brazing method
Assignee: Wall Colmonoy Corp
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Filing: 1954-08-18
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Granted: 1957-07-30
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Expires: 1974-08-18
Abstract
No abstract record available.
Inventors
- 👤 Lester E Oliphant
- 👤 Robert L Peaslee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:30
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF BRAZING METALS WHICH COMPRISES PLACING THE METAL SURFACES TO BE JOINED WITH BRAZING METAL ADJACENT THERETO, TOGETHER WITH A QUANTITY OF METALLIC LITHIUM, IN A SEALED REPORT, EVACUATING THE SAID RETORT TO A PRESSURE OF AT LEAST AS LOW AS 200 MICRONS HG, AND HEATING THE EVACUATED REPORT TO A BRAZING TEMPERATURE SUFFICIENT TO VAPORIZE THE SAID METALLIC LITHIUM AT THE PRESSURE EXISTING IN SAID RETORT AND TO CAUSE THE BRAZING METAL TO FLOW BETWEEN SURFACES AND EFFECT A BOND THEREBETWEEN.
Claim 2
Independent Claim
84 words
A METHOD OF BRAZING METALS WHICH COMPRISES PLACING THE METAL SURFACES TO BE JOINED WITH BRAZING METAL ADJACENT THERETO, TOGETHER WITH A QUANTITY OF METALLIC LITHIUM, IN A SEALED REPORT, EVACUATING THE SAID RETORT TO A PRESSURE OF AT LEAST AS LOW AS 200 MICRONS HG, AND HEATING THE EVACUATED REPORT TO A BRAZING TEMPERATURE SUFFICIENT TO VAPORIZE THE SAID METALLIC LITHIUM AT THE PRESSURE EXISTING IN SAID RETORT AND TO CAUSE THE BRAZING METAL TO FLOW BETWEEN SURFACES AND EFFECT A BOND THEREBETWEEN.
References Cited (Backward Citations)
US1753509A
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US2095807A
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US2181092A
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US2235965A
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US2491284A
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US2713196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |