Jointless construction method of the wooden products
Abstract
Abstract A jointless construction method for fabricating wood products, such as doors, windows and panels, in which exposed portions are made by gluing together a number of pre-sized plywood pieces or thin boards in combination with wood moldings, strips and/or carvings so as to obtain panels in a large variety of patterns and also capable of inserting glass, louvre blinds, or other attachments, and the inner hidden empty spaces being either densely filled (solid core) or sparsely filled (hollow core) with low grade lumber, plywoods, chipboards, etc., which are glued mutually to the exposed members and overlappedly at their connections to secure rigidity and durability and to form a compact unit.
Inventors
- 👤 P Cheng
Bibliographic Details
Claims Analysis
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |