A dual spiral mixing fin assembly adapted to mix and guide material contained in a rotatable mixing drum of a type used in a transit concrete vehicle mixing system, the assembly includes dual spiral mixing fins extending transversely along a drum mixing space attachable to the inner surface of a mixing drum. The fins are provided with a plurality of spaced large openings for allowing mixed concrete and charged ingredient materials to migrate along a drum mixing space through the openings in both a forward and rearward direction. The fins also have a plurality of spaced small openings that accommodate the passage of cleanout materials along a drum mixing space. A plurality of strut members are attached to forward portions of the mixing fins and adapted to be fixed to the front interior surface of a mixing drum.
申请公布号
CA2917746(C)
申请公布日期
2016.11.29
申请号
CA20162917746
申请日期
2016.01.15
申请人
CON-TECH MANUFACTURING, INC.
发明人
MELDAHL, BRIAN R.;ATTLESON, JAY;MCNEILUS, GARWIN B.