Tennant Company

Joseph L Pouliot

Bruce F Field

Daniel Lawrence Joynt

Joseph K Krueger

David John Copeland

David W Berg

Daniel Paul Longhenry

Robert James Guastella

Jeffrey A Johnson

Richard Mark Pierce

Michael Alexander Andreini

Daniel J McHugh

Allen John Rapatz

Reid Philip Rabon

Cleaning solution generator

A sanitation device includes a mobile body, a surface cleaning component, and a source of UV radiation. The surface cleaning component and the source of UV radiation are mounted to the mobile body, which is configured to travel over a surface. The surface cleaning component is configured to engage the surface and the source of UV radiation is configured to direct UV radiation to the surface.

Ultraviolet sanitation device

A 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 flow rate of less than approximately 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.

Cleaning liquid dispensing in a mobile hard surface cleaner

A chemical dispenser for use in a hard floor surface cleaner includes a supply of cleaning agent and a flow control device. The flow control device is fluidically coupled to the supply of cleaning agent and includes an output flow of cleaning agent therethrough having a flow rate that is substantially independent of a volume of the supply of cleaning agent.

Chemical dispenser for a hard floor surface cleaner

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. The application of electric power to the actuators causes movement of the pleat moving elements which move the filter pleats in a vibratory manner in a direction generally perpendicular to folds in the pleats. There is a control circuit for coordinating the application of power to the actuators and the valves whereby when power is applied to an actuator to impart vibratory motion to one pleated section, the valve associated with the chamber aligned with the one pleated section is operated to essentially shut off air flow through the one pleated section.

Electromagnetic filter cleaning system

Growing community of inventors

Elk River, MN, United States of America

Joseph L Pouliot