Covered Plastic Lock

Abstract

The invention relates to a cover for a surface drainage device or similar hollow body that is to be embedded in the ground and to be opened. The cover comprises an upper surface over which pedestrian and/or vehicular traffic can pass, and at least one locking element that is attached to an underside of the cover such that the upper side is closed over the locking element. The locking element is disposed at a specified distance from the underside in such a way as to form an air gap for thermal insulation between the underside and the locking element.

1 . Cover for a hollow body that is to be embedded in the ground and to be opened, comprising an upper surface over which pedestrian or vehicular traffic can pass, an underside; and at least one locking element that is attached to said underside such that the upper side is closed over the locking element and that is disposed at a determined distance from the underside in such a way as to form an air gap for thermal insulation between said underside and said locking element.  
   
   
       2 . Cover according to  claim 1 , wherein said predetermined distance is between 0.4 cm and 0.8 cm inclusive.  
   
   
       3 . Cover according to  claim 1 , wherein said air gap is constructed so that an air circulation is possible between ambient air and air in said air gap.  
   
   
       4 . Cover according to,  claim 1 , wherein a supplementary thermal-insulation element is present between said underside and said locking element.  
   
   
       5 . Cover according to,  claim 1 , wherein said locking element is made of a plastics material.  
   
   
       6 . Cover according to  claim 1 , wherein said locking element is moveable within a receptacle formed by the cover, between a removal position and a fixation position.  
   
   
       7 . Cover according to  claim 1 , wherein said locking element is made of a thermoplastics material.