| 摘要 |
The invention has the following technical features (data): size of the small pipes = 8 cm (length) with a diameter of 6 mm. One side of both pipes is flattened to 4 cm and provided with two holes for attachment to the bed. The small bar on which the fastener rests has a diameter of 5 mm. The start of the small bar is provided with an 11 cm screw thread, onto which the fastener is screwed. After 11 cm, there follows a right-angled bend to the left followed, 9 cm later, by a right-angled bend to the right. There remains 3 cm of metal. The fasteners for the right-hand and left-hand sides are mirror images of one another. The fasteners are provided with a layer of plastic for preventing damage to the duvet and duvet cover.
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