US3308532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and fillings for exothermic brazing
Assignee: Whittaker Corp
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Filing: 1963-07-29
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Granted: 1967-03-14
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Roger A Long
- 👤 Robert A Caughey
- 👤 Glenn H Sievert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:19
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/0006; F; F16; F16L; F16L13/00; F16L13/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
AN ARTICLE OF MANUFACTURE COMPRISING A METAL FITTING, A BRAZING MATERIAL POSITIONED IN EACH OF AT LEAST TWO CAVITIES IN THE INNER SURFACE OF SAID FITTING, AT LEAST TWO MONOLITHIC BODIES OF EXOTHERMIC MATERIAL IN CONTACT WITH THE OUTER SURFACE OF SAID FITTING BUT SPACED FROM EACH OTHER ALONG A PORTION OF SAID FITTING, SAID MONOLITHIC BODIES BEING DISPOSED TO GIVE UNIFORM HEATING OF SAID FITTING TO REACH THE FLOW TEMPERATURE OF SAID BRAZING MATERIAL AND IGNITION MEANS BRIDGING SAID MONOLITHIC BODIES TO PERMIT SUBSTANTIALLY SIMULTANEOUS IGNITION OF SAID MONOLITHIC BODIES.
Claim 2
Dependent Claim
91 words
AN ARTICLE OF MANUFACTURE COMPRISING A METAL FITTING, A BRAZING MATERIAL POSITIONED IN EACH OF AT LEAST TWO CAVITIES IN THE INNER SURFACE OF SAID FITTING, AT LEAST TWO MONOLITHIC BODIES OF EXOTHERMIC MATERIAL IN CONTACT WITH THE OUTER SURFACE OF SAID FITTING BUT SPACED FROM EACH OTHER ALONG A PORTION OF SAID FITTING, SAID MONOLITHIC BODIES BEING DISPOSED TO GIVE UNIFORM HEATING OF SAID FITTING TO REACH THE FLOW TEMPERATURE OF SAID BRAZING MATERIAL AND IGNITION MEANS BRIDGING SAID MONOLITHIC BODIES TO PERMIT SUBSTANTIALLY SIMULTANEOUS IGNITION OF SAID MONOLITHIC BODIES.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |