Patent US3071852A successfully refreshed from Google Patents.
US3071852A
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Method of fusion bonding with a nitrogen trifluoride flame
Assignee: Allis Chalmers Corp
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Filing: 1957-03-01
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Granted: 1963-01-08
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Expires: 1977-03-01
Abstract
No abstract record available.
Inventors
- 👤 Howard H Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:27
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38; F; F23; F23D; F23D14/00; F23D14/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
THE METHOD OF FORMING A NONOXIDIZED UNION BETWEEN TWO FUSIBLE METAL MEMBERS COMPRISING: DIRECTING A CONTINUOUS FLO OF A GASEOUS FLUX CONSISTING ESSENTIALLY OF NITROGEN TRIFLUORIDE UPON THE FUSIBLE METAL MEMBERS CONCURRENTLY WITH HEATING AT LEAST ONE OF THE MEMBERS TO THEIR FUSION TEMPERATURES AND THEREAFTER PLACING THE MEMBERS INTO INTIMATE ENGAGEMENT WITH EACH OTHER; REMOVING THE FLOW OF GASEOUS FLUX FROM UPON THE ENGAGED MEMBERS; AND COOLING THE ENGAGED MEMBERS TO FORM A SOLIDIFIED INTEGRAL BOND THEREBETWEEN.
Claim 2
Independent Claim
78 words
THE METHOD OF FORMING A NONOXIDIZED UNION BETWEEN TWO FUSIBLE METAL MEMBERS COMPRISING: DIRECTING A CONTINUOUS FLO OF A GASEOUS FLUX CONSISTING ESSENTIALLY OF NITROGEN TRIFLUORIDE UPON THE FUSIBLE METAL MEMBERS CONCURRENTLY WITH HEATING AT LEAST ONE OF THE MEMBERS TO THEIR FUSION TEMPERATURES AND THEREAFTER PLACING THE MEMBERS INTO INTIMATE ENGAGEMENT WITH EACH OTHER; REMOVING THE FLOW OF GASEOUS FLUX FROM UPON THE ENGAGED MEMBERS; AND COOLING THE ENGAGED MEMBERS TO FORM A SOLIDIFIED INTEGRAL BOND THEREBETWEEN.
Claim 3
Dependent Claim
43 words
A SELF-FLUX METHOD OF FUSING METAL IN A FUSION BONDING PROCESS COMPRISING HEATING THE METAL TO A FUSION TEMPERATURE BY THE COMBUSTION OF NITROGEN TRIFLUOIDE AND AT LEAST ONE GAS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, DIBORANE, AMMONIA, HYDRAZINE AND NATURAL GAS.
Claim 4
Dependent Claim
43 words
A SELF-FLUX METHOD OF FUSING METAL IN A FUSION BONDING PROCESS COMPRISING HEATING THE METAL TO A FUSION TEMPERATURE BY THE COMBUSTION OF NITROGEN TRIFLUOIDE AND AT LEAST ONE GAS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, DIBORANE, AMMONIA, HYDRAZINE AND NATURAL GAS.
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |