Patent ID: 8956073
Filing Date: 2015-02-17
Classification: C23F,E02D

Abstract:
1. A trench cover comprising a main body arranged to cover or partially cover a trench, in use, the main body being provided with downwardly depending longitudinally and laterally extending ribs defining rectangular recesses on the underside of the main body, and retainer means operable to resist lateral movement of the cover, in use, the retainer means comprising a plurality of movable retainers, each being movable between a retracted position and an extended position in which it projects beneath a lower surface of the main body, wherein the retainers include rectangular housings each having a surface that is coplanar with an end surface of the ribs, and a plurality of openings provided in the coplanar surface, the housings being secured within the main body in the recesses between and abutting adjacent ones of the ribs, the retainers comprising pins slidable within the housing, each pin being associated with a respective opening of the coplanar surface and freely slidable within the respective opening, and each pin being held captive to the housing.