Floor treating machines

Claim 1

A FLOOR TREATING MACHINE COMPRISING (A) A BODY PORTION HAVING AN ANNULAR DEPENDING SKIRT PORTION, (B) A DISK-SHAPED WORKING UNIT DISPOSED IN SAID SKIRT PORTION IN AXIAL ALIGNMENT THEREWITH, (C) SAID WORKING UNIT COMPRISING (1) TWO SUBSTANTIALLY INFLEXIBLE DISK-SHAPED SUPPORTING MEMBERS DISPOSED IN VERTICALLY SPACED RELATION TO EACH OTHER, (2) RESILIENT SEPARATOR MEANS DISPOSED BETWEEN SAID SUPPORTING MEMBERS, (3) A RESILIENT PAD MOUNTED ON THE LOWER FACE OF THE LOWERMOST ONE OF SAID SUPPORTING MEMBERS, (4) SAID LOWERMOST SUPPORTING MEMBER EXTENDING RADIALLY OUTWARDLY OF SAID PAD, (5) A WORKING DISK MOUNTED ON THE LOWER FACE OF SAID PAD IN POSITION TO OPERATIVELY ENGAGE A FLOOR TO BE TREATED DURING OPERATION OF THE MACHINE IN POSITION TO SUPPORT SAID SKIRT PORTION IN UPWARDLY SPACED RELATION TO SAID FLOOR, (D) SAID LOWERMOST SUPPORTING MEMBER HAVING A PLURALITY OF SPACED OPENINGS EXTENDING SUBSTANTIALLY VERTICALLY THERETHROUGH AND RADIALLY OUTWARDLY OF SAID PAID, (E) MEANS DISPOSED ON THE AXIS OF SAID SKIRT AND OPERATIVELY CONNECTED TO SAID SUPPORTING MEMBERS FOR ROTATING SAID WORKING UNIT AROUND SAID AXIS, AND (F) MEANS SUPPORTED BY SAID BODY PORTION FOR PROVIDING A FLOW OF WORKING FLUID VERTICALLY THROUGH SAID OPENINGS AND BETWEEN SAID WORKING UNIT AND SAID SKIRT, (G) SAID LOWERMOST SUPPORTING MEMBER BEING DISPOSED IN RADIALLY INWARDLY SPACED RELATION TO SAID SKIRT PORTION THROUGHOUT THE PERIPHERY OF SAID LOWERMOST SUPPORTING MEMBER SO AS TO RESTRICT FLOW OF WORKING FLUID BETWEEN SAID LOWERMOST SUPPORTING MEMBER AND SAID SKIRT.