| abstract |
A carpet extractor includes a solution distributor, such as anspray bar 90 , which delivers cleaning solution to a floor surface. A housingn 10 selectively receives a recovery tank 22 for collecting dirty cleaning solutionnfrom the floor. A first tank 14 for concentrated cleaning fluid and a secondntank 15 for clean water supply cleaning fluid and water to a reciprocatingnpump 420 through first and second fluid lines 412, 410 . The pump includesna piston 428 , which reciprocates between first and second ends of ancylindrical bore 430 . A fluid line 432 interconnects the first and second fluidnlines. As the pump reciprocates, a portion of the water is drawn into theninterconnecting line during a downward stroke, where it mixes with thenentering cleaning solution. As the pump moves on its upward stroke, thenmixture is drawn back into the water line and is pushed onward by the pumpntoward the spray bar with each successive downward stroke. |