Patent ID: 7293937

Claim:
Cover arrangement for a surface drainage device or similar hollow body that is adapted to be installed in the ground and to be opened, comprising: a frame adapted for installation in the ground and defining a plurality of bearing recesses; and a cover releasably insertable into the frame, said frame and said cover together including hinge devices that retain the cover in the frame and enable the cover to be pivoted upward in an opening direction out of the frame and including latch devices which lock the cover to the frame, at least one of the hinge devices and the latch devices having flexible cast rods that are integrally connected to the cover, said flexible cast rods including projections insertable in the bearing recesses of the frame, wherein the cover has a core and the flexible cast rods each have at least one first leg parallel to the pivot axis of the cover, said at least one first leg attaching the respective flexible cast rod to said core, each of said flexible cast rods also each having a second leg in unity with the at least one first leg and perpendicular to the pivot axis of the cover, said flexible cast rods being flexible in a direction approximately parallel with the pivot axis, and wherein the frame and the cover are each substantially rectangular, wherein the flexible cast rods are located at corners of the frame and cover, and wherein the flexible cast rods of said at least one of the hinge devices and the latch devices are symmetrical to one another.