Manhole cover for accessing underground storage tank e.g. petrol tank, has hinge fastened at frame, where hinge, its path of movement and damping units are provided horizontally within periphery of frame so that lid uncovers frame opening

摘要

The cover has a hinge (4) fastened at a frame (2), and a lid (3), where the cover is made of steel. The hinge, its path of movement and damping units are provided horizontally within the periphery of the frame so that the lid uncovers the opening of the frame. Four angular reinforcements provided in the edges of the frame receive spring catches to insert the frame within an inner dimension of a manhole pit.