US2638429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming composite joint construction
Assignee: Kellett Aircraft Corp
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Filing: 1948-03-26
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Granted: 1953-05-12
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Expires: 1968-03-26
Abstract
No abstract record available.
Inventors
- 👤 Wallace M Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:31
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/06; F; F16; F16B; F16B11/00; F16B11/006; F16B9/00; F16B9/05; F16B9/052; F16B9/056; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49696
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
THE METHOD OF JOINING A PAIR OF ADJACENT ELEMENTS USING AN EXPANDABLE JOINING MATERIAL COMPRISING THE STEPS OF IMPREGNATING WOOD VENEER WITH A PHENOLIC RESIN, WARMING SAID IMPREGNATED WOOD VENEER, COMPRESSING SAID IMPREGNATED WOOD VENEER IN SAID WARM STATE, COOLING SAID IMPREGNATED WOOD VENEER IN ITS COMPRESSED MATESTABLE STATE, APPLYING AN ADHESIVE COATING TO SAID IMPREGNATED WOOD VENEER, INSERTING SAID IMPREGNATED WOOD VENEER IN SAID COMPRESSED METASTABLE STATE BETWEEN A PAIR OF ELEMENTS TO BE JOINED, APPLYING RESTRAINING MEANS FOR CONFINING AND HOLDING SAID ASSEMBLY WITHOUT APPLYING EXTERNAL PRESSURE, AND APPLYING HEAT TO SAID ASSEMBLY FOR THE RELEASE OF THE EXPANSIVE FORCES WITHIN SAID JOINING MATERIAL FOR EFFECTING THE JOINING OF SAID ELEMENTS.
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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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |