Vacuum-cleaner nozzle

Abstract

A vacuum-cleaner nozzle has a housing formed with a downwardly open suction mouth on a lower face of the housing and having a front mouth edge and a rear mouth edge. A suction fitting on a rear end of the housing and opening into the housing serves for drawing air in through the mouth. A floor-engaging support rearward of the rear mouth edge is vertically displaceable relative to the housing between upper and lower positions. A spring biases the support into the lower position.

We claim: 
     
         1 . A vacuum-cleaner nozzle comprising:
 a housing formed with a downwardly open suction mouth opening on a lower face of the housing, having a front mouth edge and a rear mouth edge, and adapted to move on a surface to be cleaned in a working direction;   a suction fitting relative to the direction on a rear end of the housing and opening into the housing for drawing air in through the mouth;   a floor-engaging support rearward of the rear mouth edge and vertically displaceable relative to the housing between upper and lower positions respectively spaced far and closely from the surface; and   spring means for biasing the support into one of the positions.   
     
     
         2 . The vacuum-cleaner nozzle according to  claim 1 , wherein the support is an arm having an upper end pivoted on the housing and a lower end projecting rearward from the housing. 
     
     
         3 . The vacuum-cleaner nozzle according to  claim 2 , further comprising:
 a wheel on the lower end of the support.   
     
     
         4 . The vacuum-cleaner nozzle according to  claim 2 , further comprising:
 a pivot connecting the upper end of the arm to the housing.   
     
     
         5 . The vacuum-cleaner nozzle according to  claim 4 , wherein the lower end of the housing is pivotal through an acute angle between the upper and lower positions. 
     
     
         6 . The vacuum-cleaner nozzle according to  claim 2 , wherein the spring biases the arm into the lower position. 
     
     
         7 . The vacuum-cleaner nozzle according to  claim 6 , wherein the lower end travels through vertically at least 5 mm between the upper position and the lower position. 
     
     
         8 . The vacuum-cleaner nozzle according to  claim 1 , wherein there are two such supports spaced transversely apart on the housing. 
     
     
         9 . The vacuum-cleaner nozzle according to  claim 1 , further comprising:
 latch means for securing the support in the upper position.   
     
     
         10 . The vacuum-cleaner nozzle according to  claim 9 , wherein the latch means releases the support on forcible downward depression of the housing. 
     
     
         11 . The vacuum-cleaner nozzle according to  claim 1 , further comprising:
 an extension on the lower face of the housing and adapted for connection to a cleaning attachment is provided on the lower face.   
     
     
         12 . The vacuum-cleaner nozzle according to  claim 11 , wherein the extension projects rearward from the housing. 
     
     
         13 . The vacuum-cleaner nozzle according to  claim 11 , wherein the extension is below the fitting. 
     
     
         14 . A vacuum-cleaner nozzle assembly comprising
 a housing formed with a downwardly open suction mouth opening on a lower face of the housing and having a front mouth edge and a rear mouth edge;   a suction fitting on a rear end of the housing and opening into the housing for drawing air in through the mouth;   a floor-engaging support rearward of the rear mouth edge and vertically displaceable relative to the housing between upper and lower positions; and   spring means for biasing the support into one of the positions; and   a removable cleaning attachment securable to the lower face of the housing.   
     
     
         15 . The assembly according to  claim 14 , wherein the attachment includes a water-absorbing element for damp cleaning. 
     
     
         16 . The assembly according to  claim 14 , wherein the attachment is formed with a cutout through which the support projects. 
     
     
         17 . The assembly according to  claim 14 , wherein in the upper position the attachment cannot be coupled to the housing and in the lower position projects through the attachment while being unable to move from the lower position to the upper position when the attachment is secured to the lower face. 
     
     
         18 . The assembly according to  claim 14 , further comprising:
 an extension removable secured to the lower face of the housing and adapted for connection to the cleaning attachment.   
     
     
         19 . The assembly according to  claim 1 , further comprising:
 another support on a front end of the housing, adapted to hold the housing at a fixed spacing from the surface, and not movable toward or away from the housing.   
     
     
         20 . The assembly according to  claim 19 , wherein the other supports carries a floor-engaging wheel rotatable about an axis fixed relative to the housing.