Patent ID: 6910799

Claim:
Apparatus for mixing colorant with viscons material which is contained in a cylindrical semi-flexible walled tube between a sealed dispensing end and an open filler and thereof, said tube having a cylindrical inner surface and a longitudinal axis, said apparatus being adapted for sealing attachment to said tube at said filler end thereof and comprising a mixer head having a cap member with a top portion having outer proximal surface and an inner distal surface wherein a bushing bore is formed axially through said top portion, a wall portion said shaft seal for reciprocating axial motion relative to said tube, said shaft having a proximal end lying axially proximally of said top portion and having a distal end adapted to lie within said tube, a mixer impeller is mounted on said distal end and has peripheral portions adapted to lie closely adjacent to said inner surface of said tube for wiping action of said inner surface, said proximal end being adapted for engagement with a power source for axially moving said shaft and impeller substantially completely thru material contained in said tube in a reciprocating manner.