초록 ▼

A portable surface cleaning apparatus has a base for movement along a surface to be cleaned and an upright handle pivotally attached to a rearward portion of the base. A fluid dispensing nozzle for applying fluid to the surface and a suction nozzle for picking up fluid and debris from the surface ar

A portable surface cleaning apparatus has a base for movement along a surface to be cleaned and an upright handle pivotally attached to a rearward portion of the base. A fluid dispensing nozzle for applying fluid to the surface and a suction nozzle for picking up fluid and debris from the surface are associated with the base. Supply tanks are removably mounted to the handle or base while a recovery tank is removably mounted to the handle or base. An outlet in each supply tank includes a valve to close the outlet when the supply tank is removed from the base. A float valve assembly in the recovery tank includes a first end for covering an air outlet port from the recovery tank and a second end, which is buoyant and elevated by the rising recovered fluid in the tank, for raising the first end to cover the air outlet port.

대표청구항 ▼

[ What is claimed is:] [1.] A portable surface cleaning apparatus, comprising:a housing including wheels for movement of the housing along a surface to be cleaned;a fluid recovery system comprising:a fluid recovery tank on the housing having an enclosed chamber for holding recovered fluid, an inlet

[ What is claimed is:] [1.] A portable surface cleaning apparatus, comprising:a housing including wheels for movement of the housing along a surface to be cleaned;a fluid recovery system comprising:a fluid recovery tank on the housing having an enclosed chamber for holding recovered fluid, an inlet opening and an exhaust opening, a substantially horizontal baffle in an upper portion of the enclosed chamber and below the exhaust opening, a relatively small opening in the baffle proximate to the exhaust opening;a suction nozzle mounted to the housing;a working air conduit extending between the recovery tank inlet opening and the suction nozzle;a vacuum source in fluid communication with the recovery tank exhaust opening for generating a suction in the recovery tank, conduit and nozzle to thereby draw liquid from the surface and deposit the liquid in the recovery tank;a float assembly in the fluid recovery tank and having a first end that is buoyant and a second end with a valve surface that is adapted to register with and cover the exhaust opening in the recovery tank and thereby block the transfer of air and liquid from the recovery tank to the vacuum source when the recovered fluid in the recovery tank reaches a predetermined level, the first end positioned below the horizontal baffle and the second end positioned above the horizontal baffle, the first and second ends of the float assembly being connected by a support arm that extends through the relatively small opening in the baffle.