Patent ID: 7491010

Claim:
Road manhole, of the type defining a centre axis (X-X) and comprising: a frame ( 4 ) which delimits an opening ( 6 ) and which is provided with an internal collar ( 8 ) which extends radially inwards, a cover ( 10 ) which comprises a blocking web ( 12 ) which is intended to block the opening ( 6 ) and a cylindrical skirt ( 14 ) which is centred on the centre axis (X-X) and which substantially complements the internal collar ( 8 ), the blocking web ( 12 ) and the skirt defining a concave corner ( 16 ) which is directed radially outwards relative to the centre axis (X-X), and a main gasket ( 18 ) which is arranged on the internal collar ( 8 ) and which is interposed between the cover ( 10 ) and the frame ( 4 ) when the cover is in a closed position, the road manhole ( 2 ) comprising an auxiliary gasket ( 20 ) which is, at least in the closed state of the manhole, arranged on the skirt ( 14 ) and which is in contact with the concave corner ( 16 ), characterised in that the main gasket ( 18 ) and the auxiliary gasket ( 20 ) are formed by two separate components.