Surface treating apparatus

Claim 1

THE COMBINATION WITH SURFACE TREATING APPARATUS (10) HAVING A BASE (14, 16), AT LEAST ONE MEMBER (30) MOUNTED FOR ROTATION ABOUT A VERTICAL AXIS AT THE UNDERSIDE OF SAID BASE (14, 16), A BRUSH (12) INCLUDING A BACK (41) AND BRISTLES (40) FIXED THERETO, MEANS (46, 46A) FOR MOUNTING SAID BACK (41) ON SAID ROTATABLE MEMBER (30), SAID ROTATABLE MEMBER (30) AND SAID BACK (41) HAVING FIRST (42) AND SECOND (45) COACTING SURFACES SO CONSTRUCTED AND FORMED THAT SAID BRUSH (12) IS ANGULARLY MOVABLE ON SAID ROTATABLE MEMBER (30) WHEN MOUNTED THEREON BY SAID MOUNTING MEANS (46, 46A), SAID ROTATABLE MEMBER (30) HAVING A HUB AT ITS AXIS OF ROTATION PROVIDING SAID FIRST SURFACE (42), AND SAID BRUSH BACK (41) AND SAID ROTATABLE MEMBER (30) HAVING COOPERATING INTERLOCKING PARTS (41D, 48) FOR IMPARTING MOVEMENT TO SAID BRUSH (12) FROM SAID ROTATABLE MEMBER (30) WHEN SAID BRUSH BACK (41) IS CONNECTED THERETO; OF STRUCTURE TO RESTRAIN WOBBLING OF SAID BRUSH (12) COMPRISING A RINGSHAPED MEMBER (49) FIXED TO SAID ROTATABLE MEMBER (30) AND FORMING A SKIRT DEPENDING DOWNWARD FROM THE UNDERSIDE OF SAID ROTATABLE MEMBER (30) AND HAVING AN OUTER FREE-END, SAID SKIRT COMPRISING ELASTOMERIC MATERIAL EMBODYING RESILIENT PHYSICAL CHARACTERISTICS AND COACTING WITH SAID BRUSH BACK (41) TO LIMIT ANGULAR MOVEMENT OF SAID BRUSH (12) ON SAID ROTATABLE MEMBER (30) AND TO ABSORB SHOCK WHEN CONTACTED BY SAID BRUSH BACK (41) AND TO MINIMIZE THE TRANSFER OF SUCH SHOCK TO SAID ROTATABLE MEMBER (30).