Adapter for filter cartridge
View Patent ↗An adapter for a water supply system includes castlellations around the periphery of the mounting hub. The castellations eliminate the continuous sealing surface required for a standard filter end cap to effective seal to the adapter. The mounting hub has ribs on the internal periphery to prevent insertion of filter cartridge end caps with a flat O ring seal or with an O ring seal around the periphery thereof.
1. A filter system comprising:
an adapter having a mounting hub;
castellations around the periphery of said mounting hub; and
a filter cartridge having art end cap with a sealing surface which forms a seal with said adapter;
said castellations providing a discontinuous sealing surface with a flat filter end cap thereby preserving the integrity of the system by ensuring that the correct filter cartridge is installed.
2. The filter system recited in claim 1 wherein said adapter has ribs on the internal periphery of said mounting hub.
3. The filter system recited in claim 1 and an O ring on the external periphery of said adapter, said filter cartridge having an end cap which fits over said outer periphery of said adapter with a seal between said adapter and said end cap provided by said O ring.
4. The filter system recited in claim 1 and a supply of fluid to be filtered, wherein said adapter has a connector for securing said adapter to said supply of fluid.
5. The system recited in claim 1 wherein said castellations are a series of notches along the leading edge and around the periphery of said mounting hub.
6. The system recited in claim 5 wherein said adapter is part of an assembly having a head and said castellations are located in the underside of said head.