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 protrusion in a bottom surface of the supply tank defines a measuring volume for concentrated cleaning solution and is further adapted to stabilize the supply tank in the base or handle. The supply tank also includes an aperture through a lower portion selectively closed by a drain plug. A conduit connecting each supply tank to a dispensing nozzle includes a check valve restricting fluid flow to a direction from the tank and to the nozzle. Also, a float assembly in the recovery tank includes a first end for covering an air exit 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 exit.

대표청구항 ▼

[ What is claimed is:] [1.] A portable surface cleaning apparatus, comprising:a base for movement along a surface to be cleaned;an upright handle pivotally attached to a rearward portion of the base;a liquid dispensing system comprising:a liquid dispensing nozzle associated with the base for applyin

[ What is claimed is:] [1.] A portable surface cleaning apparatus, comprising:a base for movement along a surface to be cleaned;an upright handle pivotally attached to a rearward portion of the base;a liquid dispensing system comprising:a liquid dispensing nozzle associated with the base for applying liquid to the surface;a fluid supply tank on the base or the handle having an enclosed chamber for holding a predetermined amount of supply fluid;a conduit fluidly connected to the fluid supply tank and to the dispensing nozzle for supplying liquid to the dispensing nozzle;a fluid recovery system comprising:a fluid recovery tank on the base or the handle having an enclosed chamber for holding recovered fluid;a suction nozzle mounted to the base;a working air conduit extending between the recovery tank and the suction nozzle;a vacuum source in fluid communication with the recovery tank 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;the improvement comprising:a protrusion extending downwardly from a bottom wall of the fluid supply tank and defining a well in the tank for receiving a measured amount of concentrated cleaning solution.