Leaching chamber with inward flaring sidewall perforations

Details Leaching chamber with inward flaring sidewall perforations Leaching chamber with inward flaring sidewall perforations

E - Fixed Constructions

02

B

E02B 11/00 (2006.01)

Patent

CA 2535016

A leaching chamber (20) has sidewall perforations (30) which slope downwardly from the interior to the exterior of the chamber, and which flare inwardly, so that the smallest perforation dimension is on the exterior surface of the sidewall (40). Mold cores (200) having inwardly retracting slides are used to form the chamber. Thus, perforations (30) are present down near the base flange (26) of the sidewall (40), even though the base flange has an upwardly extending fin (27).

L'invention concerne une chambre de lixiviation (20) qui possède des perforations de paroi latérale (30) en pente vers le bas de l'intérieur vers l'extérieur de la chambre, et évasées vers l'intérieur, de façon que la plus petite dimension des perforations soit sur la surface extérieure de la paroi latérale (40). Des noyaux de moule (200) possédant des coulisseaux se rétractant vers l'intérieur sont utilisés pour former la chambre. Ainsi, les perforations (30) sont présentent vers le bas, proche du rebord de base (26) de la paroi latérale (40), même si ce rebord de base comporte une ailette s'étendant vers le haut (27).

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