Patent US3369288A successfully refreshed from Google Patents.
US3369288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of diffusion bonding a honeycomb structure
Assignee: Hexcel Corp
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Filing: 1963-06-24
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Granted: 1968-02-20
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Expires: 1983-06-24
Abstract
No abstract record available.
Inventors
- 👤 William K Halnan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:29
CPC Classifications
B; B21; B21D; B21D47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
THE METHOD OF MAKING A HONEYCOMB STRUCTURE WHEREIN A PLURALITY OF METAL SHEETS ARE BONDED TOGETHER AT DESIRED LOCATIONS CORRESPONDING TO THE NODE REGIONS OF A HONEYCOMB STRUCTURE FORMED BY EXPANSION OF SUCH MTAL SHEETS COMPRISING THE STEPS OF: DEPOSITING BY CONDENSATION A LAYER OF INTERMEDIATE METAL AT SPACED INTERVALS ON AT LEAST ONE SURFACE OF THE FAYING SURFACES OF A PAIR OF ADJACENT METAL SHEETS WHERE BONDING OF SAID SHEET IS TO OCCUR A LAYER OF INTERMEDAITE METAL DISSIMILAR TO THE METAL OF SAID METAL SHEETS; STACKING SAID SHEETS ONE ON TOP OF THE OTHER WITH SAID LAYERS OF INTERMEDIATE METAL STAGGERED THROUGH SAID STACK SO THAT SAID SHEETS WILL BE BONDED AT STAGGERED POSITIONS THROUGH SAID STACKS; APPLYING TO SAID SHEETS HEAT AND PRESSURE BELOW THAT WHICH PRODUCES A DIFFUSION WELD BETWEEN SAID METAL SHEETS IN SAID SPACED INTERVALS IN SAID LAYERS OF INTERMEDAITE METAL SUFFICIENT TO CAUSE A DIFFUSION OF SAID INTERMEDIATE METAL INTO SAID SHEETS TO PRODUCE DIFFUSION WELDS JOINING THE METAL SHEETS ONLY AT SAID SPACED APART INTERVALS; AND EXPANDING SAID BONDED STACK OF METAL SHEETS INTO A HONEYCOMB STRUCTURE.
Claim 2
Independent Claim
185 words
THE METHOD OF MAKING A HONEYCOMB STRUCTURE WHEREIN A PLURALITY OF METAL SHEETS ARE BONDED TOGETHER AT DESIRED LOCATIONS CORRESPONDING TO THE NODE REGIONS OF A HONEYCOMB STRUCTURE FORMED BY EXPANSION OF SUCH MTAL SHEETS COMPRISING THE STEPS OF: DEPOSITING BY CONDENSATION A LAYER OF INTERMEDIATE METAL AT SPACED INTERVALS ON AT LEAST ONE SURFACE OF THE FAYING SURFACES OF A PAIR OF ADJACENT METAL SHEETS WHERE BONDING OF SAID SHEET IS TO OCCUR A LAYER OF INTERMEDAITE METAL DISSIMILAR TO THE METAL OF SAID METAL SHEETS; STACKING SAID SHEETS ONE ON TOP OF THE OTHER WITH SAID LAYERS OF INTERMEDIATE METAL STAGGERED THROUGH SAID STACK SO THAT SAID SHEETS WILL BE BONDED AT STAGGERED POSITIONS THROUGH SAID STACKS; APPLYING TO SAID SHEETS HEAT AND PRESSURE BELOW THAT WHICH PRODUCES A DIFFUSION WELD BETWEEN SAID METAL SHEETS IN SAID SPACED INTERVALS IN SAID LAYERS OF INTERMEDAITE METAL SUFFICIENT TO CAUSE A DIFFUSION OF SAID INTERMEDIATE METAL INTO SAID SHEETS TO PRODUCE DIFFUSION WELDS JOINING THE METAL SHEETS ONLY AT SAID SPACED APART INTERVALS; AND EXPANDING SAID BONDED STACK OF METAL SHEETS INTO A HONEYCOMB STRUCTURE.
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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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |