Patent ID: 7568607

Claim:
Apparatus for use in welding a pour spout fitment to a container, comprising: an ultrasonic welding horn formed with a recess at one end thereof for receiving part of said fitment; an anvil having an annular surface portion; a wall of said container and a flange of said fitment being vibratingly pressed between said annular surface portion and said one end of said horn, thereby welding said wall and said flange to each other; a head fixed relative to and protruding from said anvil for receiving said fitment over a free end thereof; and a ring substantially co-axial with said head and protruding substantially radially outwards from said head at an end thereof opposite to said free end for maintaining an annular, radially inner portion of said flange spaced axially outwards from said annular surface portion; wherein the improvement comprises the outer periphery of said ring being of a diametrical dimension less than a diametrical dimension of said recess.