초록 ▼

A counter top water filter unit intended for domestic use to be placed adjacent to a sink and having an inlet at its lower end which is coupled to the sink faucet. The filter unit includes a cylindrical-shaped carbon particle filter cartridge which has a longitudinal passage extending from one end t

A counter top water filter unit intended for domestic use to be placed adjacent to a sink and having an inlet at its lower end which is coupled to the sink faucet. The filter unit includes a cylindrical-shaped carbon particle filter cartridge which has a longitudinal passage extending from one end to the other, and a removable pre-filter screen coaxial with the cartridge and surrounding the cartridge, both elements being removably mounted within a cylindrical filter housing, the housing being closed at its upper end and open at its lower end. A replaceable electronic display monitor unit is mounted in an outlet housing fitted to the top of the cylindrical filter housing. The state of the life-span of the filter cartridge is shown on the display monitor in terms of colored indicator lights which denote whether the filter cartridge is within, nearing an end to, and outside its expected life-span.

대표청구항 ▼

[ What is claimed:] [1.] A counter top water filter unit used by an operator, comprising:a) a filter unit having filter housing containing a removable cylindrical filter cartridge and a removable pre-filter screen coaxial with said cartridge and surrounding said cartridge;b) an outlet housing mounte

[ What is claimed:] [1.] A counter top water filter unit used by an operator, comprising:a) a filter unit having filter housing containing a removable cylindrical filter cartridge and a removable pre-filter screen coaxial with said cartridge and surrounding said cartridge;b) an outlet housing mounted to said filter housing;c) replaceable means associated with said outlet housing for evaluating the life-span of said filter cartridge, wherein when said life-span for said filter cartridge has expired said replaceable life-span evaluation means is replaced; andd) means associated with said replaceable life-span evaluation means for powering said replaceable evaluation means.