US3817810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming core panels
Assignee: Rohr Inc
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Filing: 1972-05-01
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Granted: 1974-06-18
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Expires: 1992-05-01
Abstract
Abstract A BAR OF SOLID ADHESIVE IS APPLIED TO A HOT ROLLER TO THEREBY MELT SAID ADHESIVE AND COAT IT ON AN APPLICATOR ROLLER. FAYING EDGES OF HONEYCOMB CORE MATERIAL ARE CONTACTED WITH ADHESIVE COATED APPLICATOR ROLLER TO TRANSFER ADHESIVE TO SAID EDGES, WHICH ARE THEN HELD AGAINST A FACING SHEET WHILE ADHESIVE IS CURED TO THEREBY BOND THE CORE AND SHEET TOGETHER. APPLICATOR ROLLER CAN ALSO BE USED TO COAT A PERFORATED FACING SHEET, WITHOUT CLOGGING THE HOLES IN THE SHEET WHEN PROPER CONDITIONS ARE MAINTAINED, AND THE ADHESIVE THUS APPLIED TO SAID SHEET CAN BE CURED WHILE FAYING EDGES OF HONEYCOMB CORE MATERIAL ARE HELD THEREAGAINST.
Inventors
- 👤 C Ronan
- 👤 E Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
B; B31; B31D; B31D3/00; B31D3/02; B31D3/0284; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |