Unit for repairing and inflating inflatable articles

Abstract

A unit for repairing and inflating an inflatable article defines a volume for a sealing fluid; a compressed-air inlet connectable to a pressure source; an outlet connected fluidically to the inlet by the volume to inject sealing fluid into the inflatable article by means of compressed air; and a pressure regulating unit having an outlet node upstream from the volume, a first air resistance for reducing air pressure to the volume, a bypass line connected to the outlet node and parallel to the first air resistance, and a selector connected to the first air resistance and the bypass line.

1 . A unit for repairing and inflating an inflatable article, the unit defining a volume ( 13 ) for a sealing fluid; a compressed-air inlet ( 9 ) connectable to a pressure source; an outlet ( 37 ) connected fluidically to said inlet ( 9 ) by said volume ( 13 ) to inject sealing fluid into said inflatable article by means of compressed air; and a pressure regulating unit ( 29 ) having a first air resistance ( 31 ) for reducing air pressure to said volume ( 13 ), a bypass line ( 43 ) parallel to said first air resistance ( 31 ), and a selector ( 30 ) connected to said first air resistance ( 31 ) and said bypass line ( 43 ); said first air resistance ( 31 ) producing a higher pressure drop than that along said bypass line ( 43 ) when compressed air flows. 
     
     
         2 . A unit as claimed in  claim 1 , characterized by comprising a second air resistance ( 32 ) along said bypass line ( 43 ). 
     
     
         3 . A unit as claimed in  claim 2 , characterized in that said second air resistance ( 32 ) produces a smaller pressure drop than said first air resistance ( 31 ). 
     
     
         4 . A unit as claimed in  claim 1 , characterized in that said first air resistance ( 31 ) is a valve. 
     
     
         5 . A unit as claimed in  claim 4 , characterized in that said valve is a non-return valve. 
     
     
         6 . A unit as claimed in  claim 1 , characterized by comprising a device ( 12 ) for showing the user when the sealing fluid in said volume ( 13 ) runs out. 
     
     
         7 . A unit as claimed in  claim 6 , characterized in that said device ( 12 ) is a passive display device. 
     
     
         8 . A unit as claimed in  claim 7 , characterized in that said device ( 12 ) comprises a tube connected fluidically downstream from said volume ( 13 ), and comprising at least one portion made of material through which sealing fluid flow is visible. 
     
     
         9 . A unit as claimed in  claim 1 , characterized by comprising a second selector ( 42 ); and a hose ( 40 ) parallel to said volume ( 13 ) and said pressure regulating unit ( 29 ), with respect to said second selector ( 42 ). 
     
     
         10 . A unit as claimed in  claim 9 , characterized by comprising a third air resistance ( 42 ) for regulating pressure along said hose ( 40 ). 
     
     
         11 . A unit as claimed in  claim 1 , characterized in that said bypass line is connected downstream from said outlet ( 37 ).