Patent ID: 7530135

Claim:
A carpet cleaning machine comprising: a disk-shaped brush adapted for rotating along an axis generally perpendicular to a carpet surface, the brush having a diameter of at least about 12 inches; a motor coupled to the brush; a handle assembly including a handle permitting a user to manipulate and move the machine over a carpet, the handle assembly being operatively coupled to the motor; a reservoir adapted to contain a foaming cleaning solution; a conduit extending from the reservoir to a brush outlet proximate the brush; and a heater assembly adapted to heat the solution contained in the reservoir to at least 180 degrees Fahrenheit; wherein (a) the carpet cleaning machine does not include an means for extracting the solution from the carpet, (b) the heater assembly further comprises a housing separate from the reservoir having a pump and heater contained therein, and (c) the machine further comprises (i) a first conduit extending between an outlet location on the reservoir and an inlet location on the heater assembly, and (ii) a second conduit extending between an outlet location on the housing and an inlet location on the reservoir.