| 摘要 |
<p>The invention applies to a plug to fix a nail, screw or other device in a bore. Advantages, compared with classical plugs, are: - The plug is suitable for nails. - In using screws, the plug has the advantage over classical plugs that the bore is allowed to be narrow, only slightly wider than the screw. - The plug is almost universal in respect to bore size and sizes of inserted devices. Characteristic is the construction, giving an optimum between maximum capability of compressing the plug versus a strong counter pressure against the lateral force exerted by the nail or screw. Characteristic for the material used is that, depending on the construction, the elasticity (Young's modulus) is restricted between discrete values and the yield strength must be sufficient high. Attention is paid to the following features: - A plug design to deal with a range of standard sizes of stone drills c.q. bore sizes. - A plug design to place several plugs optimally next to each other in one bore. - A plug being a container for glue giving initial fixation.</p> |
