Filter cartridge for water treatment device
AssigneeRecovery Engineering, Inc.
InventorRichard D. Hembree
Life of this patent
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Abstract
A water filter cartridge including an outer shell, an inlet opening proximate a first end, an outlet opening and a cam extending axially from the first end. Cam is constructed and arranged so as to reset a mechanical flow totalization mechanism in a water treatment device. A channel and notch in the first end of the cartridge provide fluid communication to a chamber of a water treatment device.
Claims7
A water filter cartridge for use in a water treatment device having a mechanical totalization mechanism, a mechanical shut-off valve mechanism which stops the flow of water after a predetermined volume of water has been filtered, and a flow totalization reset mechanism, the water filter cartridge comprising:
- (a) an outer shell containing water treatment material and having a central axis;
- (b) an inlet opening proximate a first end and an outlet opening proximate a second end of said outer shell;
- (c) a cam extending axially from said first end of said outer shell, said cam being constructed and arranged such that, when the filter cartridge is inserted into or withdrawn from the water treatment device substantially along said central axis, said cam mechanically actuates resetting of the mechanical flow totalization and mechanical shut-off valve mechanisms.
A water filter cartridge for use in a water treatment device having a mechanical totalization mechanism, a mechanical shut-off valve mechanism which stops the flow of water after a predetermined volume of water has been filtered, and a flow totalization reset mechanism, the water filter cartridge comprising an outer shell containing water treatment material and having a longitudinal axis, an inlet opening, an outlet opening, and an actuating projection extending from said outer shell substantially parallel to said longitudinal axis of said outer shell, said actuating projection being constructed and arranged such that, when the filter cartridge is inserted into or withdrawn from the water treatment device, said actuating projection mechanically resets the mechanical flow totalization and mechanical shut-off valve mechanisms.
A water filter cartridge for use in a water treatment device having a mechanical totalization mechanism, a mechanical shut-off valve mechanism which stops the flow of water after a predetermined volume of water has been filtered, and a flow totalization reset mechanism, the water filter cartridge comprising:
- (a) an outer shell containing water treatment material and having a central axis;
- (b) an inlet opening proximate a first end and an outlet opening proximate a second end of said outer shell;
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- (c) a cam extending axially from said first end of said outer shell, said cam being constructed and arranged such that, when the filter cartridge is inserted into or withdrawn from the water treatment device substantially along said central axis, said cam mechanically actuates resetting of the mechanical flow totalization and mechanical shut-off valve mechanisms;
- (d) said cam having first and second sloped surfaces forming an apex, said first sloped surface being constructed and arranged to mechanically actuate resetting upon insertion of the filter cartridge, and said second sloped surface being constructed and arranged to mechanically actuate resetting upon withdrawal of the filter cartridge.
Dependencies are inferred from the claim text.