Removable and adaptable internal resilient cover for sealing against odours and gas leaks in manholes, wells and tanks, has rectangular/polygonal base is forced to face chest or well provided with elastic canvas until complete seal of mouth

Abstract

The cover has a set of cylindrical flexible rods prepared from a washer contained in a central axis to certain height with respect to a plane. A tightening mechanism includes a grant part exceeding superior of a central vertical axis of a thread with an inserted piece type nut. The inserted piece type nut twins to exert pressure on the washer. A rectangular or polygonal base is forced to adapt a geometry of a peripheral elastic band and to face a chest or well to be provided with an elastic canvas (1) until a complete seal of a mouth. USE - Removable and adaptable internal resilient cover for sealing against odours and gas leaks in manholes, wells and tanks. ADVANTAGE - The cover allows edges of the elastic canvas to be adapted to a geometry of an inner shape of a manhole, well or tank, thus sealing the elastic canvas and allowing easy removal of seal. DESCRIPTION Of DRAWING(S) - The drawing shows a schematic view of a removable and adaptable internal resilient cover.Elastic canvas (1)Peripheral elastic Band (2)Peripheral and tensile metallic profile (3)Radial and tensile metallic profile (4)Central cylindrical axis (5)