B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 35/00 (2006.01) B01D 29/01 (2006.01) B29C 45/14 (2006.01) F16N 39/06 (2006.01)
Patent
CA 2188482
An orifice filter suitable for placement in, among other environments, a motor vehicle transmission assemblage, includes a plastic body member with an orifice and filtration material overlying both orifice outlets, all received within a metal housing. A plastic overmold is provided outboard of the filtration material. The filter allows for bidirectional flow of fluid through the assembly, provides for a means of bleeding pressure between fluid volumes in an assemblage, and maintains the secure positioning of the orifice in the assemblage over a range of ambient and operating temperatures. Further, a method of forming a filter assembly, including coining the metal housing of the filter assembly, allows for providing proper dimensional tolerances of the housing axial length and/or housing flange.
Filtre pour orifice convenant à des emplacements divers, entre autres environnements, les organes de transmission d'un véhicule automobile. Il comprend un corps en plastique pourvu d'un orifice et d'un matériau de filtration surmontant les deux sorties de l'orifice, qui se trouvent tous dans un boîtier métallique. Un surmoulage en plastique est fourni vers l'extérieur du matériau de filtration. Le filtre permet l'écoulement bidirectionnel dans les organes de transmission, constitue un moyen de purger la pression entre les volumes de fluides dans une transmission et assure la mise en place fixe de l'orifice dans la transmission pour toute une gamme de températures ambientes et de températures d'utilisation. De plus, une méthode de fabrication d'un ensemble filtre, y compris le matriçage du boîtier métallique de l'ensemble filtre, permet d'arriver aux tolérances dimensionnelles appropriées pour la longueur axiale du boîtier et de la bride du boîtier.
Boast Andrew J.
Hoff William B. III
Cassan Maclean
Filtertek Inc.
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