Abstract: A floor cleaning machine (100) utilizing a vacuum device (10) includes a tank (20) having an inlet (22) through which dirt, debris, or soiled solution is pulled along with air into the tank (20). The tank (20) further includes first and second air outlets (24, 30) both in communication with the tank (20). Air in the tank (20) is drawable out through the first air outlet (24) and selectively drawable out through the second air outlet (30). A check valve (40) is mounted in the second air outlet (30) preventing airflow from the second air outlet (30) to the tank (20). The check valve (40) allows the air in the tank (20) to be drawn out through the second air outlet (30) when more vacuum power is needed. The check valve (40) prevents airflow from the second air outlet (30) to the tank (20) when air is not being drawn out of the second air outlet (30) and while air in the tank (20) is being drawn out through the first air outlet (24) when less vacuum power is needed.

Abstract: A carpet extractor (10) operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump (96) which dispenses clean solution through a manually operated valve (98) to one of two lines (100, 102) having nozzles which restrict dispensing to high and low solution flow rates. In the preferred form, clean solution is dispensed at the high flow rate directly upon the carpeted surface and at the low rate upon the agitating brush (88). When restorative cleaning is desired, the valve (98) is manually moved to dispense at the high flow rate and a switch (110) is also manually moved resulting in the chassis (18) being propelled at a slow working speed. When maintenance cleaning is desired, the valve (98) is manually moved to dispense at the low flow rate and the switch (110) is also manually moved resulting in the chassis (18) being propelled at a fast working speed.

Abstract: A carpet extractor (10) operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump (96) which dispenses clean solution through a manually operated valve (98) to one of two lines (100, 102) having nozzles which restrict dispensing to high and low solution flow rates. In the preferred form, clean solution is dispensed at the high flow rate directly upon the carpeted surface and at the low rate upon the agitating brush (88). When restorative cleaning is desired, the valve (98) is manually moved to dispense at the high flow rate and a switch (110) is also manually moved resulting in the chassis (18) being propelled at a slow working speed. When maintenance cleaning is desired, the valve (98) is manually moved to dispense at the low flow rate and the switch (110) is also manually moved resulting in the chassis (18) being propelled at a fast working speed.

Abstract: A carpet extractor (10) operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump (96) which dispenses clean solution through a manually operated valve (98) to one of two lines (100, 102) having nozzles which restrict dispensing to high and low solution flow rates. In the preferred form, clean solution is dispensed at the high flow rate directly upon the carpeted surface and at the low rate upon the agitating brush (88). When restorative cleaning is desired, the valve (98) is manually moved to dispense at the high flow rate and a switch (110) is also manually moved resulting in the chassis (18) being propelled at a slow working speed. When maintenance cleaning is desired, the valve (98) is manually moved to dispense at the low flow rate and the switch (110) is also manually moved resulting in the chassis (18) being propelled at a fast working speed.

Abstract: A carpet extractor (10) operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump (96) which dispenses clean solution through a manually operated valve (98) to one of two lines (100, 102) having nozzles which restrict dispensing to high and low solution flow rates. In the preferred form, clean solution is dispensed at the high flow rate directly upon the carpeted surface and at the low rate upon the agitating brush (88). When restorative cleaning is desired, the valve (98) is manually moved to dispense at the high flow rate and a switch (110) is also manually moved resulting in the chassis (18) being propelled at a slow working speed. When maintenance cleaning is desired, the valve (98) is manually moved to dispense at the low flow rate and the switch (110) is also manually moved resulting in the chassis (18) being propelled at a fast working speed.

Abstract: A carpet extractor (10) operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump (96) which dispenses clean solution through a manually operated valve (98) to one of two lines (100, 102) having nozzles which restrict dispensing to high and low solution flow rates. In the preferred form, clean solution is dispensed at the high flow rate directly upon the carpeted surface and at the low rate upon the agitating brush (88). When restorative cleaning is desired, the valve (98) is manually moved to dispense at the high flow rate and a switch (110) is also manually moved resulting in the chassis (18) being propelled at a slow working speed. When maintenance cleaning is desired, the valve (98) is manually moved to dispense at the low flow rate and the switch (110) is also manually moved resulting in the chassis (18) being propelled at a fast working speed.

Abstract: A pump-out control valve for use in connection with a wet/dry vacuum cleaner that includes a collection tank, a top cover and a vacuum blower with an air inlet and air outlet. The control valve is mounted over a pair of openings formed through the cover. The valve includes a manifold plate located over the pair of openings and spaced above the cover, and a valve rotor located between the manifold plate and the cover. The plate is provided with an air inlet fitting and an air outlet fitting that are connected through flexible hoses to the centrifugal blower. The fittings are in general alignment with the openings in the cover. The rotor has one through passage for connecting the manifold plate inlet with one of the openings through the cover and one lateral passage which is adapted to divert flow laterally and at the same time, block the other opening in the cover. The rotor is turned approximately 180.degree.