US4008932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural element
Assignee: Stamicarbon BV
•
Filing: 1974-09-24
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Granted: 1977-02-22
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Expires: 1994-09-24
Abstract
Abstract A structural element for the assembly of structures of furniture is described having a regular hexagonal flat bottom and flat walls installed along the circumference of this bottom and positioned at a right angle thereto, which walls, at the angular points of the bottom, have their side edges adjoining. The upstanding ribs formed do not have the same length but after a short rib follows a long one. The difference in length is equal to half the length of a side of the hexagonal bottom. The element is preferably made of synthetic material.
Inventors
- 👤 Jan H. Wildschut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:26
CPC Classifications
A; A47; A47B; A47B87/00; A47B87/02; A47B87/0207; A47B87/0253; Y; Y10; Y10S; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
Structure assembled of structural elements in which each of said structural elements consists of a polygonal, flat bottom and flat walls installed along the circumference of this bottom and positioned at a right angle thereto, which walls, at the angular points of the bottom, have their side edges adjoining, the structural element being characterized in that the bottom has the form of a regular hexagon and the vertical walls have the form of a rectangular trapezium whose difference in length between the long and the short parallel side is equal to half the length of the sides of the hexagonal bottom, which walls are so arranged that successive walls are adjoining with sides of equal length at the angular points of the bottom.
Claim 2
Dependent Claim
123 words
Structure assembled of structural elements in which each of said structural elements consists of a polygonal, flat bottom and flat walls installed along the circumference of this bottom and positioned at a right angle thereto, which walls, at the angular points of the bottom, have their side edges adjoining, the structural element being characterized in that the bottom has the form of a regular hexagon and the vertical walls have the form of a rectangular trapezium whose difference in length between the long and the short parallel side is equal to half the length of the sides of the hexagonal bottom, which walls are so arranged that successive walls are adjoining with sides of equal length at the angular points of the bottom.
Claim 3
Dependent Claim
32 words
The structure of claim 1, characterized in that the short parallel side of the vertical walls, of each of said structural elements, is longer than, half the side of the hexagonal bottom.
Claim 4
Dependent Claim
33 words
The structure of claim 1, characterized in that the short parallel side of the vertical walls, of each of said structural elements, is equal to the half the side of the hexagonal bottom.
Claim 5
Dependent Claim
31 words
The structure of claim 1, wherein the base of each of the trapezium forming vertical walls, of each of said structural elements, is coextensive with a side of the regular hexagon.
References Cited (Backward Citations)
FR539084A
Cited
US1734954A
Cited
US1997022A
Cited
US2440836A
Cited
US3010888A
Cited
US3303604A
Cited
US3462062A
Cited
US3787996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |