RU2071676C1 - BLACKBOARD - Google Patents
BLACKBOARD Download PDFInfo
- Publication number
- RU2071676C1 RU2071676C1 RU94006842/12A RU94006842A RU2071676C1 RU 2071676 C1 RU2071676 C1 RU 2071676C1 RU 94006842/12 A RU94006842/12 A RU 94006842/12A RU 94006842 A RU94006842 A RU 94006842A RU 2071676 C1 RU2071676 C1 RU 2071676C1
- Authority
- RU
- Russia
- Prior art keywords
- filler
- board according
- blocks
- frame
- sheets
- Prior art date
Links
Landscapes
- Laminated Bodies (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
1. Классная доска, содержащая два листа, по меньшей мере один из которых имеет рабочее покрытие, и расположенный между ними наполнитель, выполненный из бумаги или картона, отличающаяся тем, что она дополнительно имеет пленку из термопластичного полимера, расположенную между листами и наполнителем, для термического соединения их между собой, при этом наполнитель выполнен гофрированным.2. Доска по п.1, отличающаяся тем, что она имеет рамку из неметаллического материала, установленную между листами по их периметру, при этом наполнитель расположен внутри рамки.3. Доска по п.2, отличающаяся тем, что рамка выполнена с рейками, при этом наполнитель выполнен в виде отдельных блоков, размещенных между рейками.4. Доска по п. 3, отличающаяся тем, что блоки наполнителя расположены таким образом, что волны гофр соседних блоков расположены взаимно перпендикулярно.5. Доска по п.4, отличающаяся тем, что блоки расположены таким образом, что волны гофр чередуются в шахматном порядке.1. A blackboard containing two sheets, at least one of which has a working coating, and a filler located between them, made of paper or cardboard, characterized in that it additionally has a thermoplastic polymer film located between the sheets and the filler, for thermal connection between them, while the filler is made corrugated. 2. The board according to claim 1, characterized in that it has a frame made of non-metallic material, installed between the sheets along their perimeter, while the filler is located inside the frame. The board according to claim 2, characterized in that the frame is made with slats, while the filler is made in the form of separate blocks placed between the slats. The board according to claim 3, characterized in that the filler blocks are arranged in such a way that the corrugation waves of adjacent blocks are mutually perpendicular. The board according to claim 4, characterized in that the blocks are arranged in such a way that the corrugation waves alternate in a checkerboard pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU94006842/12A RU2071676C1 (en) | 1994-02-22 | 1994-02-22 | BLACKBOARD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU94006842/12A RU2071676C1 (en) | 1994-02-22 | 1994-02-22 | BLACKBOARD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU94006842A RU94006842A (en) | 1995-10-20 |
| RU2071676C1 true RU2071676C1 (en) | 1997-01-10 |
Family
ID=48434229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU94006842/12A RU2071676C1 (en) | 1994-02-22 | 1994-02-22 | BLACKBOARD |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2071676C1 (en) |
-
1994
- 1994-02-22 RU RU94006842/12A patent/RU2071676C1/en active
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