Cuno, Inc.

Pure Water International, Inc.

Cuno Corporated

Cuono, Incorporated

Cuno, Incorporate

James M Padilla

Bruce G Taylor

Carl Palmer

Raymond M Petrucci

Edward C Giordano

Sigfrid A Tomchak

Top cap of a quick-change filter cartridge

Quick-change filter cartridge

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

Water purifier cabinet or similar article

An universal coupling is described which can be connected to the outlet of a variety of water faucets regardless of the design or cross-sectional shape of the faucet outlet. In one embodiment the universal coupling can be connected a smaller faucet outlet having a maximum outlet width of about 60% of the maximum outlet width of the largest faucet outlet to which the universal coupling can be connected. The capability of the universal coupling of this invention to be connected to such a large variety of faucet outlets regardless of the cross-sectional shape thereof enables, for example, the installer of water filters to kitchen faucets to stock just the universal coupling of this invention since it will fit most all faucets commonly found in kitchens.

Universal coupling for a faucet

The invention is related to water vending systems for the automatic dispensing of purified water from a machine which is preferably activated by coin or other form of payment. Reverse osmosis filtration of local water together with other water treatment operations is used to improve the quality of the vended water. Stagnation of stored permeate is automatically prevented to assure the freshness of dispensed water. The system is designed to reduce the frequency of servicing and the life of components without decreasing the quality of the vended water. In one embodiment the vending system comprises control means for automatically dumping the filtered water stored in a tank in the system if there has not been at least a predetermined number of vends of water within a predetermined period of time. After the storage tank has been dumped the drain is automatically closed and fresh filtered water is produced to refill the storage tank. Another embodiment allows the storage tank to remain at atmospheric pressure at all times thereby preventing leaks due to high pressure or aspiration due to below atmospheric pressure in the system. Contamination of the filtered water in the storage tank by breather air is prevented by ultraviolet sterilization of such breather air continuously before it enters the tank.

Water vending system

Water filter or similar article

Water purifier or similar article

Growing community of inventors

Covina Heights, CA, United States of America

James M Padilla