Cuno, Inc.

Cuno Corporated

Cuono, Incorporated

Cuno, Incorporate

Edward C Giordano

Raymond M Petrucci

Bruce G Taylor

Carl Palmer

James M Padilla

Mark R O'Brien

Bruce Hafner

James M Padiall

A filter device for use in a residential water supply system, or the like. The device includes a container having an enclosed cavity, and includes a filter unit disposed in the cavity. The device includes a two-stage filter having a first radial flow filter subassembly and a second axial flow filter subassembly.

Radial and axial flow stage filter device

A filter device for use in a domestic or office water supply system is provided. The device includes a container having an enclosed cavity, and includes a filter unit disposed in the cavity. The device is a two-stage device having a first radial flow filter subassembly and a second axial flow filter subassembly. The radial flow subassembly includes a radially inner perforated tube, a carbon block cylinder over the tube, prefilter cylinders over the carbon block cylinder, and a screen-like wrap layer over the radially outer second prefilter cylinder. The axial flow subassembly has a plurality of axial filter fiber tubes which have a support header wall. The header wall is mounted in a cup-shaped member. The cup-shaped member has a plurality of outlet passage slots at the closed end thereof and supports the header wall at the other end thereof.

Radial and axial flow filter device

Top cap of a quick-change filter cartridge

Quick-change filter cartridge

Combined water filter and stand therefor or similar article

Combined quick-change filter cartridge and head

Head for a quick-change filter cartridge

A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for receiving an unfiltered liquid and supplying a filtered liquid, respectively. The disposable canister has a flask shaped main body with a flat top and a neck of substantially uniform diameter on the top. The neck fits in the central chamber. A tube extending through the neck defines an annular clearance between the tube and the interior of the neck which annular clearance is in fluid communication with the inlet port. The opening into the tube located at the top of the neck is in fluid communication with the outlet port in the head. A pair of tab receptacle on the head and a complementary pair of tabs on the canister are engageable with one another by 1/4 rotation of the canister to lock the canister to the head.

Quick-change filter cartridge and head therefor

A filter apparatus for a home reverse osmosis water system is provided. The apparatus has a head, which has a forward flow inlet port for connection to a reverse osmosis water unit, and which has a reverse flow outlet port for connection to a water service faucet. The apparatus also has a cartridge, which has a twist-on securing means for connection to the head, a filter assembly for filtering forward fluid flow and for filtering reverse fluid flow, and a combination inlet and outlet port for connection to a pressurized water tank. The filter assembly has a primary filter unit, which is disposed in a cartridge primary chamber, and a secondary filter unit, which is disposed in a cartridge secondary chamber, and a valve means, e.g., check valve, which is disposed between the primary chamber and the secondary chamber, whereby forward fluid flow is permitted to flow through the primary filter unit and also through the secondary filter unit, and reverse fluid flow is only permitted to flow through the secondary filter unit. The foregoing apparatus enables permeate from a reverse osmosis module to pass through the filtration cartridge, first through the primary and then the secondary filter unit, and after storage of the filtrate therefrom, passing the stored filtrate through the secondary filter unit of the filtration cartridge in a reverse direction to the direction the permeate passed through the unit, to filter the water just prior to use.

Filter apparatus

A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for receiving an unfiltered liquid and supplying a filtered liquid, respectively. The disposable canister has a flask shaped main body with a flat top and a neck of substantially uniform diameter on the top. The neck fits in the central chamber. A tube extending through the neck defines an annular clearance between the tube and the interior of the neck which annular clearance is in fluid communication with the inlet port. The opening into the tube located at the top of the neck is in fluid communication with the outlet port in the head. A pair of tab receptacles on the head and a complementary pair of tabs on the canister are engageable with one another by 1/4 rotation of the canister to lock the canister to the head.

The present invention sets forth an adapter for filter cartridges and a mating cartridge which provides sealing means between the cartridge and the adapter and sealing means between the adapter and a filter head to which it is to be installed, and means for installing the adapter on a cartridge and for installing the adapter in the filter head with an aligning and locking means that ensures that all parts are appropriately positioned for proper function and at the same time will prevent physical disengagement and/or a break in the flow path from the cartridge to the filter head when the cartridge and adapter are properly installed in the filter head.

Growing community of inventors

Manchester, CT, United States of America

Edward C Giordano