David J Spofford

US Patent:

7614260, Nov 10, 2009

Filed:

Oct 3, 2005

Appl. No.:

11/242264

Inventors:

Ralph G. Daniels - Derry NH, US
David A. Spofford - Northwood NH, US

Assignee:

Daniels Equipment Company, Inc. - Auburn NH

International Classification:

D06F 33/00

US Classification:

68 1202, 68 1212, 68183, 68207

Abstract:

A system for controlling a supply of ozone to a washing machine during operation thereof. The system comprising a washing machine having an internal drum for containing laundry and a quantity of a water. An ozone generator is connected to the washing machine and the ozone generator produces and supplies the produced ozone to the washing machine for ozonating the water. At least one sensor is provided for sensing a quantity of ozone exhausting from the washing machine during operation thereof, and the at least sensor being coupled to the ozone generator for interrupting production of ozone when a quantity of ozone exhausting from the washing machine exceeds a safe level.

US Patent:

8020232, Sep 20, 2011

Filed:

Nov 9, 2009

Appl. No.:

12/614847

Inventors:

Ralph G. Daniels - Derry NH, US
David A. Spofford - Northwood NH, US

Assignee:

Daniels Equipment Company, Inc. - Auburn NH

International Classification:

D06F 35/00

US Classification:

8158, 81491

Abstract:

A system for controlling a supply of ozone to a washing machine during operation thereof. The system comprising a washing machine having an internal drum for containing laundry and a quantity of a water. An ozone generator is connected to the washing machine and the ozone generator produces and supplies the produced ozone to the washing machine for ozonating the water. At least one sensor is provided for sensing a quantity of ozone exhausting from the washing machine during operation thereof, and the at least sensor being coupled to the ozone generator for interrupting production of ozone when a quantity of ozone exhausting from the washing machine exceeds a safe level.

US Patent:

20110296629, Dec 8, 2011

Filed:

Aug 18, 2011

Appl. No.:

13/212309

Inventors:

Ralph G. Daniels - Derry NH, US
David A. Spofford - Northwood NH, US

Assignee:

DANIELS EQUIPMENT COMPANY, INC. - Auburn NH

International Classification:

D06L 1/20
D06B 23/28
D06B 1/00
D06F 35/00

US Classification:

8137, 68 5 C

Abstract:

A system for controlling a supply of ozone to a washing machine during operation thereof. The system comprising a washing machine having an internal drum for containing laundry and a quantity of a water. An ozone generator is connected to the washing machine and the ozone generator produces and supplies the produced ozone to the washing machine for ozonating the water. At least one sensor is provided for sensing a quantity of ozone exhausting from the washing machine during operation thereof, and the at least sensor being coupled to the ozone generator for interrupting production of ozone when a quantity of ozone exhausting from the washing machine exceeds a safe level.

US Patent:

20140033445, Feb 6, 2014

Filed:

Jul 24, 2013

Appl. No.:

13/949691

Inventors:

Ralph G. DANIELS - Derry NH, US
David A. SPOFFORD - Northwood NH, US

Assignee:

AWOIS LLC - Auburn NH

International Classification:

D06F 33/02
D06F 35/00

US Classification:

8137, 68 13 R

Abstract:

Method and system for controlling a concentration of ozone is a washing machine to be at or below a target value so that a cumulative contact time of the ozone with laundry approaches a duration of time of an entire wash stage or cycle thereby ensuring killing of any infectious diseases. The method comprises supplying ozone to the washing machine, upon filling the washing machine, and supplementing the supplied ozonated water by supplying additional ozone to the wash machine during each wash stage or cycle, and controlling the supply of ozone supplied to the wash machine so that the concentration of ozone sampled or exhausting from the washing machine is controlled to be within a control band between 60% and 100% of the target value and the cumulative contact time of the ozone with the laundry is at least 60% of the duration of the entire wash stage or cycle.

US Patent:

6506309, Jan 14, 2003

Filed:

Nov 16, 2000

Appl. No.:

09/714634

Inventors:

Ralph G. Daniels - Derry NH
David A. Spofford - Northwood NH

Assignee:

Awois, LLC - Auburn NH

International Classification:

C02F 178

US Classification:

210760, 210765, 210192, 210205, 210252, 210258

Abstract:

A system comprising an ozone generator for generating ozone and a venturi for mixing the liquid to be ozonated with the generated ozone. The ozone generator is coupled to an orifice for supplying the generated ozone thereto. A pump is coupled to an outlet of the reservoir for pumping liquid to be ozonated from the reservoir to venturi. An outlet of the venturi is connected to a return inlet of the reservoir for supplying ozonated liquid back to the reservoir. A mixing chamber interconnects the outlet of the venturi to the return inlet of the reservoir, and the mixing chamber facilitates adequate mixing of the ozone supplied to the liquid to be ozonated and facilitates substantially complete dissolving of any remaining ozone bubbles and ozone pockets within the liquid to thereby result in substantially uniform mixture of ozonated liquid for supply back to the reservoir having an increased contact rate of ozone to liquid of about 80% to 90%.