1
J Kenneth Duncan, Wesley A Schroeder: Water treatment device having means to count times used and limit useage. Mr Coffee, D Peter Hochberg, Mark Kusner, March 2, 1993: US05190643 (119 worldwide citation)

A lid assembly for a portable water treatment device of the type including a vessel with an opened upper end and a replaceable filter cartridge adapted to be contained therein. A lid assembly is adapted to be attached to the opened upper end of the vessel above the replaceable filter cartridge and o ...


2
John D Tanner, David J Emmons: Water filter cartridge end-of-life mechanism. Recovery Engineering, Merchant Gould Smith Edell Welter & Schmidt P A, March 16, 1999: US05882507 (97 worldwide citation)

A filter cartridge end-of-life mechanism and a filter cartridge assembly for a water treatment device. The end-of-life mechanism comprises a float which is moved along an escapement path each time the device is filled. A counting mechanism connected to the float provides a continuous visual indicati ...


3
John D Tanner, David J Emmons, Brian D Gale: Pour-through water treatment carafe. Recovery Engineering, Merchant & Gould P C, August 15, 2000: US06103114 (87 worldwide citation)

A pour-through water treatment device. The device comprises a carafe, a pour tray including a lower portion, an outer lid, and an inner lid. The outer lid is sealed to and substantially covers a forward portion of the lower portion, and has a lip extending over an upper edge of the carafe. The inner ...


4
Richard D Hembree, Brian F Sullivan: Water treatment device with volume totalization valve. Recovery Engineering, Merchant Gould Smith Edell Welter & Schmidt, June 18, 1996: US05527451 (82 worldwide citation)

A water treatment device including an arrangement having mechanisms for mechanically totaling the volume of water filtered and for indicating when the replaceable filter cartridge has reached the end of its useful life. End-of-life indication is provided by a valve mechanism for stopping flow after ...


5
Alexander Huang, Richard Fayram, John Stiggelbout: End-of-life indicator for water treatment device. The Clorox Company, Francis Law Group, February 23, 1999: US05873995 (79 worldwide citation)

An end-of-life indicator comprising a housing having a chamber therein and attachable to the water treatment device, a diaphragm disposed within the chamber, a rotatable cap having indicia disposed thereon adapted to cooperate with the housing, a spring device for rotating the cap with respect to th ...


6
Heinz Hankammer: Filter cover for a purification insert in a water treatment device with a hollow tube. Brita Wasser Filter Systeme, Paul & Paul, January 23, 1990: US04895648 (70 worldwide citation)

Described is a filter cover for a purification insert (4) in a water treatment device, wherein the filter cover (5) has filter slots (7) on a conical surface portion (6) and at least one vent opening (9) in the middle of a raised connecting portion (8), and can be connected to a hollow tube (10) wit ...


7
Frederick C Wilkins, Li Shiang Liang, Herbert Bendlin, Stephane Dupont, Achim Brust, Felix Nussbaum: Water treatment system having dosing control. United States Filter Corporation, Wolf Greenfield & Sacks P C, July 20, 1999: US05925240 (64 worldwide citation)

A water treatment system having dosing control for providing treated water having very low organic and ionic contamination, that can be accurately dispensed. The water treatment system having dosing control includes a water inlet hydraulically connected to a pump having a variable speed motor. At le ...


8
John D Tanner, David J Emmons: Filter cartridge for gravity-fed water treatment devices. PUR Water Purification Products, Merchant & Gould P C, September 18, 2001: US06290848 (58 worldwide citation)

A filter cartridge for a gravity-fed water treatment device having a porous particulate filter disposed therein. The porous particulate filter has an open upper end, a closed lower end, and sidewalls therebetween. Water is treated as it flows through the sidewalls of the filter. The cartridge also c ...


9
Richard D Hembre, Brian F Sullivan: Faucet-mounted water treatment device. Recovery Engineering, Merchant & Gould P C, July 27, 1999: US05928504 (55 worldwide citation)

A faucet-mounted water treatment device including a flow totalizer and an end-of-life indicator cooperating with the totalizer to tell the user when it is necessary to replace the filter cartridge. End-of-life indication is provided by a valve which stops flow after a predetermined volume has been f ...


10
Frank A Hoeschler: Water treatment apparatus with means for automatic disinfection thereof. Herbert E Haynes Jr, October 14, 1980: US04228000 (53 worldwide citation)

A water treatment device of the type which automatically regenerates itself at predetermined intervals is provided with a special disinfectant feeder device which dispenses a predetermined amount of disinfectant into the water treating media bed and the device itself to kill the bacteria therein. Th ...