US3177577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding graphite articles with iron-base brazing alloys
Assignee: Japan Atomic Energy Agency
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Filing: 1961-02-17
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Granted: 1965-04-13
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Expires: 1981-02-17
Abstract
No abstract record available.
Inventors
- 👤 Fujimura Tadato
- 👤 Ando Yoshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:14
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3066; B23K35/308; G; G21; G21C; G21C5/00; G21C5/12; G21C5/126; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/904
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
A METHOD OF JOINING GRAPHITE ARTICLES BY MEANS OF IRON-BASE ALLOYS AS BRAZING MATERIAL, WHICH COMPRISES CARRYING OUT THE BRAZING BY FILLING A RECESS FORMED BETWEEN ABUTTED EDGES ON THE UPPER SURFACES OF TWO GRAPHITE ARTICLES TO BE JOINED WITH FUSED BRAZING MATERIAL OF IRONBASE ALLOYS CONSISTING OF 10 TO 50% BY WEIGHT OF NICKEL, LESS THAN 0.2% OF CARBON AND THE REMAINING SUBSTANTIALLY OF IRON, BY HEATING THE BRAZING MATERIAL TO A TEMPERATURE OF FROM 1,200 TO 1,600*C. BY AN ELECTRIC ARC ILN A SHIELDING GAS ATMOSPHERE.
Claim 2
Independent Claim
88 words
A METHOD OF JOINING GRAPHITE ARTICLES BY MEANS OF IRON-BASE ALLOYS AS BRAZING MATERIAL, WHICH COMPRISES CARRYING OUT THE BRAZING BY FILLING A RECESS FORMED BETWEEN ABUTTED EDGES ON THE UPPER SURFACES OF TWO GRAPHITE ARTICLES TO BE JOINED WITH FUSED BRAZING MATERIAL OF IRONBASE ALLOYS CONSISTING OF 10 TO 50% BY WEIGHT OF NICKEL, LESS THAN 0.2% OF CARBON AND THE REMAINING SUBSTANTIALLY OF IRON, BY HEATING THE BRAZING MATERIAL TO A TEMPERATURE OF FROM 1,200 TO 1,600*C. BY AN ELECTRIC ARC ILN A SHIELDING GAS ATMOSPHERE.
Claim 3
Dependent Claim
18 words
THE METHOD OF CLAIM 1 WHEREIN THE ELECTRIC ARC IS GENERATED BETWEEN THE GRAPHITE AND A BRAZING TORCH.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |