Wing tapping plate for spin-on filters

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 27/08 (2006.01)

Patent

CA 2374872

A filter assembly is provided having a generally cylindrical housing defining a housing edge. A filtering element is disposed in the housing for filtering the fluid. A generally circular unitary tapping plate is also provided having a fluid inlet port, a fluid outlet port, and mounting means for removably mounting the filter assembly to the fluid circulation system. The unitary tapping plate further having a generally U-shaped portion defining an inboard seal retaining groove and a wing portion extending radially outwardly from said U-shaped portion. The edge of the housing surrounds the tapping plate and is folded inwardly over the wing portion of the tapping plate such that a free end of the housing edge generally terminates in the seal-retaining groove. The filter assembly also includes an external seal having a generally rectangular cross-section that is retained in the seal retaining groove. The wing portion of the tapping plate enables the outer diameter of the housing and the filtration area of the filtering element to be increased, without increasing the diameter of the external seal.

L'invention concerne une cartouche filtrante dotée d'un boîtier généralement cylindrique définissant un bord de boîtier. Un élément filtrant disposé dans le boîtier est destiné à filtrer le fluide. Une plaque-couvercle unitaire de forme généralement circulaire comprend un orifice d'entrée de fluide, un orifice de sortie de fluide et un dispositif de montage destiné à monter la cartouche filtrante sur un système de circulation de fluide. La plaque-couvercle unitaire comprend en outre un segment généralement en forme de U définissant une gorge de retenue de joint intérieur et une partie de collerette s'étendant radialement vers l'extérieur à partir de ce segment en forme de U. Le bord du boîtier entoure la plaque-couvercle et se replie vers l'intérieur par dessus la partie de collerette de la plaque-couvercle de sorte qu'une extrémité libre du bord du boîtier se termine généralement dans la gorge de retenue de joint. La cartouche filtrante comprend aussi un joint extérieur à section transversale généralement rectangulaire qui est logé dans la gorge de retenue de joint. La partie de collerette de la plaque-couvercle permet d'augmenter le diamètre extérieur du boîtier et la zone de filtrage de l'élément filtrant, sans augmenter le diamètre du joint extérieur.

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