Installation of Correct Filter Cartridge in Fluid Filter Assembly Before Allowing Assembly To Be Completed

摘要

The descriptions relate to preventing assembly of a fluid filter apparatus unless a filter cartridge is installed, and preventing assembly of a fluid filter apparatus if the incorrect filter cartridge is installed. A mechanism includes cooperation of a movable member and a structure that can move the movable member to ensure that a fluid filter apparatus cannot be completely assembled, for example connecting its filter head to its shell, when there is no cartridge installed inside the shell or when there is an attempt to install an incorrect cartridge. This can protect from an inadvertent or intentional failure to install a cartridge (or correct cartridge) in the fluid filter apparatus.

主权项

1. A filter assembly comprising:
a filter head having a connective structure, the filter head includes a movable member disposed therein, the movable member blocks assembly with the filter head unless the movable member is moved; a filter cartridge having a filter media, the filter cartridge includes a structure configured to move the movable member disposed in the filter head so as to allow the filter cartridge to be assembled with the filter head; and a shell that receives the filter cartridge, the shell includes a connective structure that is configured to connect with the connective structure of the filter head, when the movable member is moved, so as to allow the filter cartridge to be assembled with the filter head, and so as to allow clearance for the shell and filter cartridge to be received in the filter head and allow connection with the filter head.