Patent ID: 8646965
Filing Date: 2014-02-11
Classification: B01F,B28C,B29C

Abstract:
1. A mixing fin assembly adapted to mix and guide materials contained in a rotatable mixing drum of a type used in a transit concrete vehicle mixing system, the assembly comprising: (a) a spiral mixing fin including a track locking socket, said fin being designed to extend transversely into a drum mixing space and constructed of a lightweight moldable polymeric material which is flexible and resistant to abrasion; and (b) a spiral fin mount rail track including a top rim locking tab, wherein the spiral fin mount rail track is adapted to be fixed to the interior surface of the mixing drum and to aid in anchoring and stabilizing said spiral fin assembly in said drum; (c) wherein said spiral mixing fin comprises a plurality of conjoined sections fit together and which are configured to attach to said fin mount rail track; (d) wherein the track locking socket of the spiral mixing fin is shaped to accommodate the top rim locking tab thereby interlocking the spiral mixing fin with the spiral fin mount rail track.