Annular ring element
OwnerHorst Guggemosinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to a cylindrical or frustoconical annular element or liner for producing a gully hole or pipe well or a pipe conduit. The outer surface (5) of the annular element (1) is provided with longitudinal ribs (3) which are aligned especially in parallel to the generatrices and/or parallel to the center central axis (7) of the annular element (1). According to the invention, at least two contiguous longitudinal ribs (3) with substantially parallel direction of projection extend from the outer surface (5).
Claims22
A cylindrical or truncated conical annular element or liner, in particular of plastic, for constructing a channel or pipe-cased shaft or a pipeline, whereby aligned longitudinal ribs (3) are provided on the outer surface (5) of the annular element (1), in particular, parallel to the generatrix and/or parallel to the central median axis (7) of the annular element (1), characterized in that at least two longitudinal ribs (3), lying side by side, having an essentially parallel direction of projection, extend from the outer surface (5).
Dependencies are inferred from the claim text.