Rolf M Engelhard

US Patent:

6461520, Oct 8, 2002

Filed:

May 19, 2000

Appl. No.:

09/575350

Inventors:

Rolf Engelhard - Prescott AZ
Stephen P. Kasten - Prescott AZ

Assignee:

Life Spring Limited Partnership - Las Vegas NV

International Classification:

C02F 132

US Classification:

210748, 210138, 210192, 210764, 250436, 422 24, 315360, 315DIG 5

Abstract:

A time delay in de-energizing the electronic ballast and its associated UV lamp subsequent to cessation of water discharge from a user-activated water treatment unit ensures irradiation of the water prior to a subsequent user-activated water discharge and reduces the likelihood of any live microorganisms being present in the water subsequently discharged. A soft start of the UV lamp upon actuation of the water treatment unit reduces the mechanical stresses imposed upon the filaments of the UV lamp and the life span of the UV lamp is enhanced.

US Patent:

6830686, Dec 14, 2004

Filed:

Feb 10, 2003

Appl. No.:

10/361235

Inventors:

Rolf Engelhard - Prescott AZ
Stephen P. Kasten - Prescott AZ

Assignee:

RCT Technologies, LLC - Prescott AZ

International Classification:

B01D 2933

US Classification:

2103232, 21049701

Abstract:

Each cap of a pair of end caps mounted on opposed ends of a conventional radial flow cylindrical filter element of a filter cartridge includes a circular sleeve extending axially from the filter element for penetrably receiving a supporting stud and for maintaining an O-ring seal therebetween. The area of one of the end caps radially outwardly of its circular sleeve is greater than the corresponding area of the other end cap to cause fluid to be filtered to pressure bias the filter cartridge toward the other end cap and to positionally retain the filter cartridge within its housing. A positioning member extending into the filter element from one of the end caps receives and stabilizes sleeve for a u/v lamp disposed within the filter element to kill any microorganisms present and to oxidize any organic matter subjected to the emitted ultra-violent radiation.

US Patent:

7033502, Apr 25, 2006

Filed:

Sep 16, 2004

Appl. No.:

10/942655

Inventors:

Rolf Engelhard - Prescott AZ, US
Stephen P. Kasten - Prescott AZ, US

Assignee:

RCT Technologies LLC - Prescott AZ

International Classification:

B01D 29/33

US Classification:

21049701, 2103232

Abstract:

Each cap of a pair of end caps mounted on opposed ends of a conventional radial flow cylindrical filter element of a filter cartridge includes a circular sleeve extending axially from the filter element for penetrably receiving a supporting stud and for maintaining an O-ring seal therebetween. The area of one of the end caps radially outwardly of its circular sleeve is greater than the corresponding area of the other end cap to cause fluid to be filtered to pressure bias the filter cartridge toward the other end cap and to positionally retain the filter cartridge within its housing. A positioning member extending into the filter element from one of the end caps receives and stabilizes sleeve for a u/v lamp disposed within the filter element to kill any microorganisms present and to oxidize any organic matter subjected to the emitted ultra-violent radiation.

US Patent:

7794608, Sep 14, 2010

Filed:

Jun 28, 2007

Appl. No.:

11/770580

Inventors:

Rolf Engelhard - Prescott AZ, US

Assignee:

Zuvo Water, LLC - Mountain View CA

International Classification:

C02F 1/78
C02F 1/46

US Classification:

210760, 21074801, 21074808, 21074819

Abstract:

Water within a water tank is irradiated with ultraviolet light from a UV lamp for virucidal and germicidal purposes while simultaneously transforming oxygen molecules to ozone molecules in an oxygen containing gas flowing within an annular space defined by a sleeve surrounding the UV lamp. The ozone enriched gas flows into an enlarged chamber into which the UV lamp extends and the flow rate is reduced to enhance the time of exposure of the ozone enriched gas to UV radiation and thereby enhance the production of ozone. To increase the rate of transformation of oxygen molecules to ozone molecules, the gas is under a predetermined pressure prior to entering the annular space and subsequent to discharge from the chamber.

US Patent:

8017073, Sep 13, 2011

Filed:

Nov 30, 2009

Appl. No.:

12/628180

Inventors:

Rolf Engelhard - Prescott AZ, US

Assignee:

Life Spring Limited Partnership - Las Vegas NV

International Classification:

A61L 2/08

US Classification:

422 24

Abstract:

This document describes a high intensity air purifier (HAIP), a super oxidation purifier, and a controller for controlling operation of any of various purification systems. In some implementations, a HAIP includes an air purifier system coupled within a housing having an air inlet and an air outlet. The air purifier system includes a pre-filter coupled to the air inlet, an axial fan for receiving and forwarding air from the air inlet. The air purifier system further includes a UV reaction chamber having a UV-light source for providing UV light to the forwarded air from the air inlet and a reflective lining to reflect the provided UV light, to provide UV purified air from the UV reaction chamber. The air purifier system further includes a chemical catalyst cartridge for receiving the UV purified air from the UV reaction chamber, for further purifying the UV purified air, and a post filter coupled to the air outlet.

US Patent:

8066940, Nov 29, 2011

Filed:

Jun 28, 2007

Appl. No.:

11/770504

Inventors:

Rolf Engelhard - Prescott AZ, US

Assignee:

Zuvo Water, LLC - Mountain View CA

International Classification:

C02F 1/32

US Classification:

422 24, 422 20, 422186, 21074801, 21074812

Abstract:

Simultaneous application of ozone and ultraviolet light (UV185 and UV254) in water to be purified will create hydroxyl radicals, which combination will cause conversion of AS (III) that may be present to As (V), oxidation of inorganic matter such as manganese, sulfur, phosphorus and organic matter and provide virucidal and germicidal effects to purify the water.

US Patent:

8066941, Nov 29, 2011

Filed:

Jun 28, 2007

Appl. No.:

11/770594

Inventors:

Rolf Engelhard - Prescott AZ, US

Assignee:

Zuvo Water, LLC - Mountain View CA

International Classification:

C02F 1/32

US Classification:

422 24, 422186, 21074801, 21074812, 210192

Abstract:

A pressurized water tank having a head space includes a pump for recirculating the water through a nozzle disposed in the head space. The out flowing stream of water will entrain air and cause mixing of air entrained water with the remaining water in the tank. To enhance air entrainment and convey the air entrained water to a location well below the water level, the stream of water is injected into a vertical venturi tube. The entrained air will have an oxidizing effect upon organic matter and also cause circulation of the water within the tank. To enhance oxidation of organic and inorganic matter, a UV lamp may be located in the head space to convert oxygen molecules in the air into ozone molecules. Such ozone molecules would be entrained in the stream of water flowing out of the nozzle and into the tube and have a strong oxidizing effect upon organic and inorganic matter. UV radiation from the UV lamp will also have a virucidal and germicidal effect upon microorganisms on the surface of the water and in water to some depth below the water surface.

US Patent:

8161579, Apr 24, 2012

Filed:

Mar 14, 2007

Appl. No.:

11/686224

Inventors:

Rolf Engelhard - Prescott AZ, US

Assignee:

Zuvo Water, LLC - Mountain View CA

International Classification:

E03D 9/04
E03D 9/02
E03D 9/00
E03F 5/08

US Classification:

4213, 4216, 4220, 4222, 42271, 42281

Abstract:

A self contained battery energized apparatus is mounted within the water tank of a conventional flush toilet to eliminate malodorous gases. Air from the toilet bowl is drawn through the stand pipe in the toilet tank into a housing to expose the air to UV radiation to produce ozone molecules that have an oxidizing effect on organic matter and the UV radiation serves as a germicide and a virucide. The ozonated and oxidized gases are exhausted through a carbon filter.