Patent ID: 6230900
Filing Date: 2001-05-15
Classification: B01D,Y10T

Abstract:
A filter assembly for a working fluid of an automatic transmission of an automobile, comprising:a filter case having an opening end portion coaxially surrounding a central axis of the filter case;a filter element inserted into the filter case;a set plate mounted in the opening end portion of the filter case, the set plate having an outer peripheral portion with an interior surface facing an interior of the housing and an exterior surface facing exterior of the housing, wherein the interior and exterior surfaces of the set plate are generally parallel to each other and extend generally perpendicularly to said central axis, wherein said set plate includes a radially outer tapered peripheral surface extending from the interior surface to the exterior surface of the set plate, wherein said radially outer tapered peripheral surface of the set plate enters said opening end portion of the filter case with press fitting against a radially inner peripheral surface of the filter case to improve a sealing effect between the set plate and the filter case, said set plate having an inlet and an outlet for the working fluid to be filtered; anda seal plate attached to the exterior surface of the set plate and fixed to the opening end portion of the filter case by curling up an outer periphery portion thereof together with an edge portion of the opening end portion of the filter case;wherein said tapered peripheral surface occupies substantially an entire thickness of the outer peripheral portion of the set plate as defined by a distance measured from the interior surface to the exterior surface of the set plate, wherein said tapered peripheral surface tapers radially outwardly from said central axis in a direction axially away from the filter element from the interior surface to the exterior surface of the set plate.