USRE27593E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed core laminated structure and method
Assignee: —
•
Filing: 1971-04-05
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Granted: 1973-03-06
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Expires: 1991-04-05
Abstract
Abstract A LAMINATED CORE CONSTRUCTION UTILIZES A SUPPORTING FRAME OR FORM WHEN INSERTING PLASTIC MATERIAL BETWEEN TWO OPPOSED, SUPPORTED FACINGS. THE SUPPORTING FORM HAS A BLOCKING MEANS TO FORM THE EDGE CONSTRUCTION BETWEEN THE FACINGS THAT BENDS THE ENDS OF THE FACINGS TO FORM TWO SIDE-BY-SIDE CHANNELS. THE BLOCKING MEANS, WHICH IS REMOVED AFTER SETTING OF THE CORE, EXTENDS BETWEEN THE TWO CHANNELS TO FORM A GENERALLY U-SHAPED END PORTION WITH THE LAMINATED CORE STRUCTURE PROVIDING THE ONLY CONNECTING MEANS BETWEEN THE TWO OPPOSED FACINGS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:58
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/58; F; F25; F25D; F25D23/00; F25D23/06; F25D23/062; F25D23/064; B29L; B29L2031/00; B29L2031/762; B29L2031/7622; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |