| 摘要 |
A gymnastic or athletic floor covering or mat employs compressible or shock absorbing material secured to sheet material to form a laminate by fastening means which present little or no protrusion upon compression of the shock absorbing material. The invention has a particular application in the construction of gymnastic mats employing adjacent blocks of compressible material and flexible sheet covers. The fastening means in its preferred form consists of an integral, elastomeric member having a shank provided with headed ends. The length of the shank is such that upon insertion of the member through the mat, the underside of one of the heads engages the outer face of the bottom cover and that of the other head the upper face of either the compressible material or the top cover so that in either event the shank is maintained in an axially elongated condition. Thus, the compressible material and at least one of the covers are held in a tight laminate relationship and vertical displacement of the blocks of compressible material relative to each other is prevented. When the region of the mat immediately adjacent the device is compressed, as by the weight of a performer thereon, the device contracts therewith rather than protrudes therefrom. Additionally, the lower head frictionally engages the floor to prevent slipping of the covering or mat. |
