초록 ▼

A filter assembly is disclosed including a cartridge member having a body portion and a cylindrical neck portion depending from the body portion, the neck portion having at least one lug depending radially outwardly therefrom having a keyed surface formation thereon, and a reception member defining

A filter assembly is disclosed including a cartridge member having a body portion and a cylindrical neck portion depending from the body portion, the neck portion having at least one lug depending radially outwardly therefrom having a keyed surface formation thereon, and a reception member defining an axial bore for receiving the neck portion of the cartridge member, the bore having at least one reception area provided therein for receiving the at least one lug, the reception area having a compatible mating surface formation defined therein for engaging the keyed surface formation on the lug so as to prevent engagement with an incompatible cartridge member.

대표청구항 ▼

1. A filter assembly comprising:a) a cartridge member including a body portion for enclosing filter media and a cylindrical neck portion depending from and in fluid communication with the body portion, the body portion housing filter media therein for filtering a fluid, the neck portion including an

1. A filter assembly comprising:a) a cartridge member including a body portion for enclosing filter media and a cylindrical neck portion depending from and in fluid communication with the body portion, the body portion housing filter media therein for filtering a fluid, the neck portion including an inlet port for directing unfiltered fluid into the body portion and an outlet port for directing filtered fluid out of the body portion, the neck portion having at least two lugs depending radially outwardly therefrom, each lug having engagement surfaces facing away from the body portion and an inclined cam surface axially spaced from the body portion and facing toward the body portion in a generally axial direction, at least one of said engagement surfaces defining a keyed surface formation; b) a head member defining an axial head member bore and including inlet and outlet passages which communicate with the head member bore, the head member bore having a reception member rotatable disposed therein the reception member defining an axial reception member bore for receiving the neck portion of the cartridge member to faciliate communication between the inlet and outlet passages of the head member and the inlet and outlet ports of the neck portion, wherein at least two reception recesses are formed in the axial reception member bore for receiving the lugs of the neck portion, each reception recess having mating surfaces defined therein for mating with the engagement surfaces of each lug, at least one of said mating surfaces having a keyed surface formation for mating with the keyed surface formation of said at least one engagement surface; and c) a support member 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 engaging the respective cam surfaces of the lugs to secure the cartridge member to the head member.