Patent ID: 6949189
Filing Date: 2005-09-27
Classification: B01D,C02F

Abstract:
1. A filter assembly comprising: a) a cartridge member including a body portion for enclosing filter media and a neck portion including at least one inlet port for directing unfiltered fluid into the body portion and at least one outlet port for directing filtered fluid out of the body portion, the filter assembly having at least two lugs depending radially outwardly operatively positioned thereon, at least one lug defining a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface; b) a head member defining an axial chamber and including inlet and outlet passages which communicate with the axial chamber; c) a valve member, rotatably disposed within the head member axial chamber and defining an axial cavity, for receiving the neck portion of the cartridge member to facilitate communication between the inlet and outlet passages of the head member and the inlet and outlet ports of the neck portion, the axial cavity defining at least one reception slot defining a surface for mating with the keyed engagement surface defined on at least one lug, the at least one reception slot further defining at least one inclined surface for interacting with the trailing inclined cam surface formed on at least one lug to facilitate engagement and/or disengagement of the cartridge member with the axial cavity of the valve member; d) a support member, operatively disposed between the head member and the cartridge member, the support member including an aperture for receiving the neck portion of the cartridge member, the aperture having an inner surface defining at least two cam ramps for interacting with the leading inclined cam surface formed on at least one of the lugs to facilitate engagement of the lugs of the cartridge member with the support member.