Patent US6402750B1 successfully refreshed from Google Patents.
US3073268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for braze-bonding metallic parts
Assignee: General Dynamics Corp
•
Filing: 1957-04-04
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Granted: 1963-01-15
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Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Donald W Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:12
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/0008; B23K1/0014; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A BRAZING TOOL FOR USE IN BRAZING TOGETHER A STRUCTURAL SANDWICH COMPRISING A METALLIC CELLULAR CORE, TOP AND BOTTOM METALLIC SKIN SHEETS AND PERIPHERAL EDGE MEMBERS, SAID BRAZING TOOL COMPRISING A CLOSED CONTAINER EMBODYING A PAIR OF LIKE PAN-SHAPED MEMBERS HAVING PERIPHERAL FLANGES, SAID PAN-SHAPED MEMBERS BEING FORMED OF THIN, FLEXIBLE SHEET METAL AND BEING RIGIDLY SECURED TOGETHER AT THEIR PERIPHERAL FLANGES IN FACE-TO-FACE RELATION TO DEFINE AN AIR-TIGHT CHAMBER FOR RECEIVING SAID STRUCTURAL SANDWICH, REFERENCE TOOLING POSITIONED WITHIN SAID AIR-TIGHT CHAMBER FOR LOCATING AND MAINTAINING THE COMPONENTS OF SAID STRUCTURAL SANDWICH IN DESIRED RELATIONSHIP DURING A BRAZING OPERATION, AND A VACUUM LINE COMMUNICATING WITH SAID AIR-TIGHT CHAMBER FOR USE IN PRO-
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |