GIESSKERN FUER DIE HERSTELLUNG VON ZENTRIFUGALSCHAUFELRAEDERN AUS ELASTOMER.

摘要

An elastomeric-covered shrouded impeller having a pair of disk-like shrouds enclosing vanes and vane passages which has an improved throat opening having sweeping internal sidewalls is disclosed. A three-piece mold core is utilized to form the vane passage and the sweeping curved throat inlet of the impeller.