Self adjusting depth stain extraction tool

Abstract

An attachment tool includes a housing having a top and bottom surface. A suction nozzle defines a suction nozzle inlet proximate the bottom surface. A fluid delivery circuit is associated with the housing for distributing a cleaning solution to a surface to be cleaned. A fluid recovery circuit includes the suction nozzle for extracting the cleaning solution from the surface. An applicator apparatus is elastically coupled to the housing with at least one spring member and moveable relative to the suction nozzle inlet based on an elastic deformation of the at least one spring member. The applicator apparatus includes an applicator body defining a distribution manifold in fluid communication with the fluid delivery circuit. The applicator body supports a plurality of needle applicators that each define a fluid delivery aperture for receiving the cleaning solution from the distribution manifold and distributing the cleaning solution onto the surface to be cleaned.

What is claimed is: 
     
         1 . An attachment tool for a cleaning appliance, the attachment tool comprising:
 a housing including a top surface and a bottom surface;   a suction nozzle defining a suction nozzle inlet proximate the bottom surface;   a fluid delivery circuit associated with the housing for distributing a cleaning solution to a surface to be cleaned;   a fluid recovery circuit including the suction nozzle for extracting the cleaning solution from the surface; and   an applicator apparatus elastically coupled to the housing with at least one spring member and moveable relative to the suction nozzle inlet based on an elastic deformation of the at least spring member, the applicator apparatus including an applicator body defining a distribution manifold in fluid communication with the fluid delivery circuit, the applicator body supporting a plurality of needle applicators that each define a fluid delivery aperture for receiving the cleaning solution from the distribution manifold and distributing the cleaning solution onto the surface to be cleaned.   
     
     
         2 . The attachment tool according to  claim 1 , wherein at least some of the plurality of needle applicators are coupled to the applicator body in a circular pattern. 
     
     
         3 . The attachment tool according to  claim 2 , wherein the circular pattern is distributed around the suction nozzle inlet. 
     
     
         4 . The attachment tool according to  claim 1 , wherein the applicator body defines a central aperture that is aligned with the suction nozzle inlet, and the central aperture is moveable relative to the suction nozzle inlet based on the elastic deformation of the at least one spring member. 
     
     
         5 . The attachment tool according to  claim 1 , wherein the fluid delivery apertures of the plurality of needle applicators are oriented to distribute at least part of the cleaning solution in a direction substantially towards the suction nozzle inlet. 
     
     
         6 . The attachment tool according to  claim 1 , wherein the housing defines an internal cavity, the bottom surface of the housing defines an opening to the internal cavity, the applicator body is located within the housing and aligned with the opening, and the plurality of needle applicators are moveable within the opening based on the elastic deformation of the at least one spring member. 
     
     
         7 . An attachment tool for a cleaning appliance, the attachment tool comprising:
 a housing including a top surface and a bottom surface;   a suction nozzle defining a suction nozzle inlet proximate the bottom surface;   a fluid delivery circuit associated with the housing for distributing a cleaning solution to a surface to be cleaned;   a fluid recovery circuit including the suction nozzle associated with the housing for extracting the cleaning solution from the surface; and   an applicator apparatus in fluid communication with the fluid delivery circuit, the applicator apparatus supporting a plurality of needle applicators that each include a sidewall extending between an upper end and a lower end defining needle bodies, each sidewall defines a fluid delivery aperture proximate the lower end that is oriented along a distribution angle that extends at least partially towards the upper end for receiving and distributing the cleaning solution from the fluid delivery circuit onto the surface to be cleaned and at least partially towards the suction nozzle inlet.   
     
     
         8 . The attachment tool according to  claim 7 , wherein the needle bodies each define an internal distribution channel extending between the upper end and the fluid delivery aperture. 
     
     
         9 . The attachment tool according to  claim 8 , wherein the fluid delivery aperture is defined by a top distribution wall and a bottom distribution wall facing the top distribution wall and located between top distribution wall and the lower end. 
     
     
         10 . The attachment tool according to  claim 9 , wherein the top distribution wall extends substantially towards the suction nozzle inlet. 
     
     
         11 . The attachment tool according to  claim 9 , wherein the bottom distribution wall extends substantially perpendicular to the sidewall. 
     
     
         12 . The attachment tool according to  claim 9 , wherein the distribution angle is acute. 
     
     
         13 . The attachment tool according to  claim 8 , wherein the internal distribution channel extends substantially linearly between the upper end and the fluid delivery aperture extends transversely from the internal distribution channel, through the sidewall, and towards the suction nozzle inlet. 
     
     
         14 . The attachment tool according to  claim 7 , wherein the plurality of needle applicators at least partially surround the suction nozzle inlet. 
     
     
         15 . The attachment tool according to  claim 14 , wherein the plurality of needle applicators are arranged in a circular pattern surrounding the suction nozzle inlet. 
     
     
         16 . The attachment tool according to  claim 15 , wherein the nozzle inlet defines a circular shape extending about a central axis and the fluid delivery apertures are oriented towards the central axis. 
     
     
         17 . An attachment tool for a cleaning appliance, the attachment tool comprising:
 a housing including a top surface and a bottom surface;   a suction nozzle defining a suction nozzle inlet proximate the bottom surface;   a fluid delivery circuit associated with the housing for distributing a cleaning solution to a surface to be cleaned;   a fluid recovery circuit including the suction nozzle for extracting soiled cleaning solution from the surface; and   an applicator apparatus at least partially within the suction nozzle inlet and elastically coupled to the housing with at least one spring member and moveable with respect to the suction inlet based on an elastic deformation of the at least spring member, the applicator apparatus including an applicator body supporting a plurality of needle applicators that each define a fluid delivery aperture for receiving the cleaning solution from the fluid delivery circuit and distributing the cleaning solution onto the surface to be cleaned.   
     
     
         18 . The attachment tool according to  claim 17 , wherein the suction nozzle inlet is defined between the applicator body and the housing for extracting the cleaning solution entirely around the applicator body. 
     
     
         19 . The attachment tool according to  claim 17 , wherein the fluid delivery apertures are each oriented along a distribution angle to distribute the cleaning solution at least partially towards the bottom surface. 
     
     
         20 . The attachment tool according to  claim 19 , wherein each of the fluid delivery apertures are defined by a top distribution wall and a bottom distribution wall, and the top distribution wall extends substantially towards the suction nozzle inlet.