| 摘要 |
<p>The animal stairway construction comprises a spiral staircase, which is fastened between a base and window or balcony, or formed as component of a scratching post, which is used for inspection of animals. A step tread is provided, which has a prism shape or a shape like a trapeze in the top view. The step treads are milled in the center and also in the outer diameter of the steps corresponding to the curvature of the radius of the step. The steps are made of wood, plastic, stone, metal or glass.</p> |
