| 摘要 |
A timber dog only provided with teeth along every edge of the plate. The form of the plate is as a square, a rectangle, a rhomb, a rhomboid, a parallel trapezium, a hexagon, a triangle, or another polygon. The teeth are straight or profiled in C-, U- or V-form, individually or in combination with each other, the teeth being placed in one or more rows, linear or non-linear, symmetrical or non-symmetrical, with the concavity or the V-form outwards or inwards, or in combination with each other. In order to increase the anchoring force, the teeth are provided with deformations, and the plate is deformed in order to increase the rigidity of the teeth, the teeth being directed away from each other as well in order to increase the anchoring force. <IMAGE> |
