US Patent 7676886 Carpet cleaner with pressed-down suction

A carpet cleaner with a base, a handle, and a plurality of wheels is provided. The carpet cleaner includes a suction opening provided at a front portion of the base of the carpet cleaner and a detachable pressing bar extended from the front portion of the base above the suction opening, wherein the suction opening is pressed down to the carpet floor by pushing down the detachable pressing bar, wherein the suction opening contacts the carpet floor tight for facilitating suction of the carpet cleaner. The detachable pressing bar includes a built-in spring for regulating the amount of pressure to the detachable pressing bar. The pressing bar includes a handle adapted to grab and push.