BRUCE H FIELD, MD
Psychiatric at Jackson St, Saint Paul, MN

8603320, Dec 10, 2013

Sep 16, 2011

13/235061

Bruce F. Field - Golden Valley MN, US

Tennant Company - Minneapolis

C02F 1/46, B08B 7/04

205701, 205746, 205755, 205756, 205757, 134 3, 134 10, 134 21, 134 36

A method and apparatus are provided for generating and applying a sanitizing liquid. The method includes moving a mobile floor cleaning device along a floor and electrochemically activating a liquid on the mobile floor cleaning device by passing the liquid through a functional generator having first and second electrode chambers that are separated by an ion exchange membrane such that the liquid activated in the first electrode chamber comprises Omolecules. Substantially all of the liquid activated in the first and second electrode chambers are dispensed from the device within 5 seconds of the time at which the liquids are activated by the functional generator without an intermediate step of storing either of the liquids produced in the first or second electrode chambers. At least some of the dispensed liquid is recovered from the floor with a recovery device carried by the mobile floor cleaning device.

2007018, Aug 9, 2007

Dec 11, 2006

11/637234

Bruce Field - Golden Valley MN, US
Joseph Krueger - Brooklyn Park MN, US
Joseph Pouliot - Elk River MN, US

Tennant Company - Minneapolis MN

A47L 7/00

015320000, 015401000, 015385000, 015340300

A mobile hard surface cleaner includes a motorized scrub head, a fluid recovery device, a primary cleaning liquid component container, a cleaning agent container, a flow control device and a fluid flow path. The flow control device is configured to supply a flow of cleaning agent from the cleaning agent container at a predetermined volume flow rate of greater than 0 cubic centimeters per minute and less than 10 cubic centimeters per minute to a flow of primary cleaning liquid component from the primary cleaning liquid component container. The fluid flow path is configured to receive a flow of cleaning liquid, which comprises the cleaning agent and the primary cleaning liquid component. A method of dispensing a chemical for use in a mobile hard surface cleaner includes driving a flow of cleaning agent from a cleaning agent container at a flow rate of less than approximately 10 cubic centimeters per minute, supplying a flow of primary cleaning liquid component from a cleaning liquid component container supported by the hard floor surface cleaner, combining the flow of cleaning agent and the flow of primary cleaning liquid component to form a flow of cleaning liquid, and dispensing the flow of cleaning liquid to either a motorized scrub head or a surface under the hard floor surface cleaner.

8046867, Nov 1, 2011

Jan 19, 2007

11/655359

Bruce F. Field - Golden Valley MN, US
Patrick J. Gronlund - Somerset WI, US

Tennant Company - Minneapolis MN

A47L 7/00

15320, 153001

A mobile surface cleaner is provided, which includes a mobile body configured to travel over a surface, a source of a liquid, a liquid dispenser, a flow path from the liquid source to the liquid dispenser, and an electrolyzing sparging device in fluid communication with the flow path.

7051399, May 30, 2006

May 21, 2002

10/152549

Bruce F. Field - Golden Valley MN, US
Daniel L. Joynt - Wyoming MN, US
Jeffrey A. Johnson - St. Paul MN, US
Joseph K. Krueger - Hopkins MN, US
Bryan L. Christensen - Dayton MN, US

Tennant Company - Minneapolis MN

E01H 1/08, A47L 11/30

15320

A cleaner cartridge includes a container having an interior cavity, in which cleaning agent can be stored. A first end of conduit is fluidically coupled to the interior cavity. A second end of the conduit is connectable to a chemical dispenser.

4790402, Dec 13, 1988

Sep 28, 1987

7/101508

Bruce F. Field - Minneapolis MN
Joseph G. Kasper - Golden Valley MN

Tennant Company - Minneapolis MN

B62D 100

180169

An unmanned, self-propelled vehicle in the nature of a mobile robot has an on-board computer that stores path and machine function instructions and activates the drive and steering systems so as to cause the machine to follow a desired path. A plurality of retroreflectve targets are mounted along the desired path. They do not have to be mounted at a specific height or distance apart, nor need they be square to the path. An improved guidance system for keeping the vehicle on the prescribed path includes a laterally scanning laser transmitter-receiver mounted on the vehicle. An electromechanical tracking device controls the angle of elevation of the laser beam so as to keep it aimed at each target successively as the vehicle moves. The laser produces signals which steer the vehicle such that the laser transmitter and targets are kept aligned in a vertical plane. A positioning device can move the laser transmitter transversely on the vehicle so that the vehicle centerline may travel in the vertical plane of the laser or may travel in an offset line parallel to the vertical laser plane.

6117200, Sep 12, 2000

Jul 9, 1998

9/112393

David W. Berg - Plymouth MN
Bruce F. Field - Golden Valley MN
Joseph L. Pouliot - Elk River MN

Tennant Company - Minneapolis MN

A47L 920, B01D 4604

55287

A mobile surface maintenance machine has a cleaning brush and a dust collection system mounted on the machine. The dust collection system includes a vacuum fan, a filter housing having an air inlet and a pleated filter element positioned within the housing with its upstream side being in communication with the housing air inlet. The filter housing has separate, side-by-side, chambers on the downstream side of the filter. There are electrically operated valves located in the filter housing on the downstream side of the filter element, with the valves being in communication with the vacuum fan. There is one valve controlling air flow from each chamber. The filter element is functionally divided into separate, but joined, pleated sections, with each section being aligned with one of the chambers. There is an electric actuator mounted on the downstream side of each pleated filter section and there is a pleat moving element associated with and movable by each electric actuator. The pleat moving elements each are in engagement with only the pleats in one filter section.

2013023, Sep 5, 2013

Feb 22, 2013

13/774384

Peter A. Swenson - Minneapolis MN, US
Bruce F. Field - Golden Valley MN, US
Larry D. Orstad - Minnetonka MN, US
Karen R. Wasiluk - St. Paul MN, US

TENNANT COMPANY - Minneapolis MN

A22C 17/08

452173

An apparatus and method are provided to clean and sanitize livestock carcasses. The apparatus includes a livestock carcass travel path, at least one liquid dispenser configured to dispense liquid to the carcass travel path, and at least one treatment electrode. A control circuit is configured to cause an alternating electric field to be generated between the electrode and a surface of a carcass along the travel path, through the dispensed liquid.

2010008, Apr 15, 2010

Sep 2, 2009

12/552508

Bruce F. Field - Golden Valley MN, US
Todd R. Schaeffer - St. Michael MN, US

TENNANT COMPANY - Minneapolis MN

B08B 7/00

134 6

A method for removing a cosmetic substance, the method comprising electrochemically activating a liquid, dispensing the electrochemically-activated liquid to a surface containing the cosmetic substance, and applying frictional wiping to the surface containing the cosmetic substance and the applied electrochemically-activated liquid.

8007654, Aug 30, 2011

Jan 19, 2007

11/655378

Bruce F. Field - Golden Valley MN, US
Patrick J. Gronlund - Somerset WI, US

Tennant Company - Minneapolis MN

C02F 1/461, C02F 1/467

205746, 205742, 205755, 205756, 205757, 205473, 204554, 422 28, 422 30, 422 31, 422224, 422305, 2107481, 21074817, 210758, 210764

An electrochemically activated fluid is provided, which has an anolyte and a catholyte. For example, a sparged anolyte and a sparged catholyte are provided. In another example, a combined anolyte and catholyte is provided.

7959789, Jun 14, 2011

Jan 19, 2007

11/655389

Bruce F. Field - Golden Valley MN, US
Patrick J. Gronlund - Somerset WI, US

Tennant Company - Minneapolis MN

C02F 1/46, A47L 7/00

205746, 205755, 205756, 205757, 134 36, 134 10, 134 21

A method is provided, which includes moving a mobile floor cleaning device along a floor; electrochemically activating a liquid on the mobile floor cleaning device, and dispensing the electrochemically activated liquid from the mobile floor cleaning device.