E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
E02D 29/12 (2006.01) B29C 44/02 (2006.01) B29C 44/34 (2006.01) E02D 29/14 (2006.01)
Patent
CA 2552306
A stackable polymeric foam adjustment or grade ring is provided for the construction of the adjustment courses or manhole chimney portion of a sewer system. The adjustment ring is circular and may include concentric annular grooves on at least one surface and male portions corresponding in size and shape to the concentric annular grooves on a second surface. The adjustment rings are stacked one on another with the respective male portions being coupled within a corresponding annular groove to provide a manhole construction that is resistant to inflow, chemicals and freeze-thaw cycle damage.
Un anneau d'ajustement ou de niveau en mousse polymérique empilable sert à construire les assises d'ajustement ou la partie cheminée de trou d'homme d'un réseau d'égoût. L'anneau d'ajustement est circulaire et peut comprendre des rainures annulaires concentriques sur une surface au minimum et des parties mâles correspondant en taille et en forme aux rainures annulaires concentriques sur une seconde surface. Les anneaux d'ajustement sont empilés l'un sur l'autre, les parties mâles respectives étant accouplées à une rainure annulaire correspondante pour assurer une construction de trou d'homme résistant aux dommages dus aux afflux d'eau, aux produits chimiques et aux cycles de gel-dégel.
Wahl David
Wilson Stephen K.
Industrial Packaging Systems Inc.
Perry + Currier
Wahl David M.
LandOfFree
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