Patents Assigned to Albemarna, S.L.
  • Sealing device for a manhole
    Patent number: 6688807
    Abstract: A sealing device that ensures the hermetic securing of the lid (5) in the access mouth (2) in order to prevent any infiltration of fluids from the outside or escape of gases from the interior. The device comprises a frame (1), a lid (5) that rests on said frame (1) with interposition of a sealing joint (6), and a crosspiece (12) in order to facilitate the securing of the lid (5) with the aid of a screw (21). The sealing joint (6) permits complete imperviousness be obtained in the sealing of the device.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: February 10, 2004
    Assignee: Albemarna, S.L.
    Inventor: Maximino Martínez Navarrete