Patent ID: 6836928
Filing Date: 2005-01-04
Classification: A47L,Y10T

Abstract:
1. A carpet extractor of the type which applies a cleaning solution to a surface, the extractor comprising: a distributor for delivering the cleaning solution to a surface; a source of a first cleaning fluid; a source of a second cleaning fluid for mixing with the first cleaning fluid to form the cleaning solution; a pump; a first fluid line fluidly connected between the source of the first cleaning fluid and a first end of the pump; a second fluid line fluidly connecting the source of the second cleaning fluid, a second end of the pump, and the distributor; a third fluid line interconnecting the first and second fluid lines located between the first and second sources and the pump, the pump mixing the first and second fluids in the interconnecting line; and a fluid release valve located in the second fluid line between the pump and the distributor, the fluid release valve being selectively operable to allow cleaning solution to flow from the pump toward the distributor, the pump maintaining the second line between the pump and the fluid release valve pressurized so that cleaning solution is released when the fluid release valve is opened.