Sealing device with c-shaped lips and central projection
AssigneeForsheda AB
InventorsWieland Neumann, Helmut Mehl, Anders Strom, Joakim Andersson
Life of this patent
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Abstract
A sealing device for a sealing space defined by sealing surfaces of two elements (2, 6), preferably pipes or well rings consisting of concrete, comprises a sealing element (28). The sealing element is adapted to seal a section of the sealing space extending transversely of the jointing direction of the two elements and has prior to the jointing of the elements a substantially C-shaped cross section.
Claims22
A sealing device for sealing a space between sealing surfaces located on cooperating stepped ends of first and second annular elements, the sealing space being established by jointing the ends of the first and second elements with each other, the sealing surfaces of the first and second elements defining the sealing space comprising a central section parallel with a jointing direction and a first and second transverse section extending transverse to the longitudinal axis and from opposite ends of the central section of the sealing space to opposite sides of the elements, the device comprising a sealing element for sealing the first transverse section of the sealing space, characterized in that the sealing element prior to the jointing of the elements has a substantially C-shaped cross section having a central portion adapted to engage at its outer surface one of the sealing surfaces of said first transverse section of the sealing space and having two sealing lips extending from the central portion and being directed towards each other at their free edges, the sealing lips being adapted to engage the opposite sealing surface of said first transverse section of the sealing space and to be folded towards the central portion of the sealing element when the two elements are being jointed.
Dependencies are inferred from the claim text.