Nilfisk-advance, Inc.

Nick Graupe

Dexter Lehman

Agnes Friese

Donald Joseph Legatt

Charles A Cazett

A carpet extractor () operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump () which dispenses clean solution through a manually operated valve () to one of two lines () 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 (). When restorative cleaning is desired, the valve () is manually moved to dispense at the high flow rate and a switch () is also manually moved resulting in the chassis () being propelled at a slow working speed. When maintenance cleaning is desired, the valve () is manually moved to dispense at the low flow rate and the switch () is also manually moved resulting in the chassis () being propelled at a fast working speed.

Dual cleaning mode carpet extractor

A squeegee assembly () includes first and second protrusions () interconnected to a support () to which front and rear flexible blades () are mounted. In preferred aspects, squeegee assembly () is of a curved design such that the flexible blades () are spaced at the center of the support () where a suction tube () is provided and taper towards each other so that their ends are closely adjacent each other. The first and second protrusions () define upper and lower channel portions () between the flexible blades () so that appreciable reduction in the speed of air flow towards the suction tube () does not occur, which reduction may result in dropping of carried moisture.

Squeegee assembly

A carpet extractor ( ) operable in either a restorative cleaning mode or a maintenance cleaning mode includes a constant rate pump ( ) which dispenses clean solution through a manually operated valve ( ) to one of two lines ( ) 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 ( ). When restorative cleaning is desired, the valve ( ) is manually moved to dispense at the high flow rate and a switch ( ) is also manually moved resulting in the chassis ( ) being propelled at a slow working speed. When maintenance cleaning is desired, the valve ( ) is manually moved to dispense at the low flow rate and the switch ( ) is also manually moved resulting in the chassis ( ) being propelled at a fast working speed.

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White Bear Lake, MN, United States of America

Nick Graupe