PETER SWAIN CARTWRIGHT
Engineers in Minneapolis, MN

8580118, Nov 12, 2013

Jul 23, 2010

12/842644

Peter S. Cartwright - Bloomington MN, US

B01D 61/22, C02F 1/58, B01D 65/02, C02F 5/00

210636, 210650, 210651, 210739, 210637

A water softening system includes apparatus and process that recycles a substantial percentage of the brine. This system conventionally includes a brine tank and a softening tank through which hard water from a source passes during normal operation. During the regeneration cycle, the brine solution in the brine tank passes through the softening tank acquiring hardness ions, and then through a nanofilter that passes a much higher proportion of the brine ions than the hardness ions. The hardness ions flow from the upstream end of the nanofilter into a drain. The liquid passing through the nanofilter contains salt that returns to the brine tank for reuse. A preferred embodiment includes a pump to force the brine solution through the nanofilter and a throttling valve connecting the upstream side of the nanofilter to a drain, and through which the hardness ions flow.

2014006, Mar 13, 2014

Nov 11, 2013

14/076900

Peter S. Cartwright - Bloomington MN, US

C02F 1/44

210 962, 210140, 210141

A water softening system includes apparatus that recycles a substantial percentage of the solution used for regenerating the system. This system conventionally includes a brine tank and a softening tank through which hard water from a source passes during normal operation. During a regeneration mode, the solution of sodium or potassium ions in the brine tank passes through the softening tank acquiring hardness ions, and then through a nanofilter that passes a much higher proportion of the sodium or potassium ions than the hardness ions from a high pressure side to a low pressure side. The hardness ions flow from the upstream end of the nanofilter through an outlet and into a drain. The liquid passing through the nanofilter contains salt that returns to the brine tank for reuse. A preferred embodiment tests the concentration of softening alkali metal ions in the liquid flowing from the softening tank during a fast rinse portion of the regeneration cycle.

5744028, Apr 28, 1998

Nov 21, 1996

8/752998

Nobutaka Goto - Tokyo, JP
Peter S. Cartwright - Minneapolis MN

Konica Corporation

C02F 1461, C02F 132

210181

A water dispenser including a water tank for storing water supplied from a water bottle; an electrolytic cell including an anode, a cathode, and a three-dimensional carbon electrode provided between the anode and the cathode, the electrolytic cell being provided downstream of the water tank; a water outlet valve provided downstream of the electrolytic cell; and a power supply for applying an electric current to the anode so as to polarize the electrode for sterilizing the water.

7402240, Jul 22, 2008

Mar 17, 2004

10/802663

Chia Kung - Eden Prairie MN, US
Phillip Goebel - New Hope MN, US
Thomas J. Cartwright - Albertville MN, US
Peter Cartwright - Bloomington MN, US
Kenneth J. Sieth - Delafield WI, US
Richard Reckin - Colgate WI, US
Duane Freimuth - Milwaukee WI, US

General Electric Company - Fairfield CT

B01D 35/14

210110, 210117, 210136, 2101952, 2102572

A home RO filtration system includes a membrane module having an inlet connected to a feed line, the membrane module also having a concentrate outlet coupled to a concentrate line, and a permeate outlet coupled to a permeate line. The permeate line communicates with a faucet. The system includes a flush reservoir communicatively coupled between the permeate line and the feed line. The system is configured such that after the faucet is turned off, a portion of permeate is delivered to the reservoir and then delivered to the inlet of the module to flush the module.

8323484, Dec 4, 2012

Feb 28, 2008

12/038879

Chia Kung - Eden Prairie MN, US
Phillip Goebel - New Hope MN, US
Thomas J. Cartwright - Albertville MN, US
Peter Cartwright - Bloomington MN, US
Kenneth J. Sieth - Delafield WI, US
Richard M. Reckin - Colgate WI, US
Duane S. Freimuth - Milwaukee WI, US

General Electric Company - Fairfield CT

B01D 65/00

210106, 210109, 210117, 210134, 210136, 2102572, 21032169

A home RO filtration system includes a membrane module having an inlet connected to a feed line, the membrane module also having a concentrate outlet coupled to a concentrate line, and a permeate outlet coupled to a permeate line. The permeate line communicates with a faucet. The system includes a flush reservoir communicatively coupled between the permeate line and the feed line. The system is configured such that after the faucet is turned off, a portion of permeate is delivered to the reservoir and then delivered to the inlet of the module to flush the module.

2008011, May 22, 2008

Jan 28, 2005

10/587955

Peter S. Cartwright - Bloomington MN, US

C02F 1/44

210637, 210670, 210744

A brine recycling apparatus and process form a part of a water softening system (). The water softening system () has a brine tank () for receiving brine solution that has passed through a softening tank () of the softening system () to remove hardness ions adsorbed on resin regenerating particles in the softening tank (). The brine solution in the brine tank () is forced through a filter such as a nanofilter () that allows a much higher proportion of the brine ions to pass than the hardness ions. The liquid passing through the filter () is returned to the brine tank (). The liquid that does not pass through the filter () may be directed to a drain. A preferred system uses a pump () to force the brine solution through the filter ().