Patent ID: 8171962

Claim:
A device for filling an aerosol container ( 1 ) with a liquid or paint, using a filling arrangement equipped with a pusher element ( 12 ), the filling device comprising: a cup ( 3 ) designed to accommodate the liquid or paint for filling the aerosol container ( 1 ); an injection opening ( 4 ) provided on a bottom of the cup ( 3 ), the injection opening adapted to a valve ( 2 ) of the aerosol container ( 1 ); a pusher element ( 12 ); and a piston head ( 7 ) acting by pushing on the filling liquid or paint contained in the cup ( 3 ) for transferring the filling liquid or paint from the cup ( 3 ) to the aerosol container ( 1 ), the piston head ( 7 ) being a detachable piston head that can be mounted by simple interlocking on an end of the pusher element ( 12 ) and later separated from the pusher element ( 12 ) within the cup, in an initial state before the transfer operation, the piston head ( 7 ) being coupled to the cup ( 3 ), in a detachable manner, against an outside face that forms the bottom of the cup ( 3 ), for use in the transfer operation, the piston head ( 7 ) is uncoupled from the cup and introduced in the cup, during the transfer operation, the piston head ( 7 ) is in the form of a scraper in continuous contact with an inside wall of the cup ( 3 ), the piston head ( 7 ) being shaped to work within the cup ( 3 ), and after the transfer operation is complete, the piston head ( 7 ) is kept within the cup ( 3 ) to form an airtight wall that retains residual liquid that has not been transferred from within the cup ( 3 ) during the transfer operation, wherein after a filling operation to fill the aerosol container, the piston head ( 7 ) is seated adjacent to the bottom of the cup to seal the bottom of the cup such that residual liquid or paint is visible through the bottom of the cup, and the piston head and the cup form a cap for the aerosol container.