Patent Number: 6,168,163

Title: Shaft seal for mixers

Abstract: A shaft seal is interposed between a tank and a rotating shaft extending through the tank and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft. A multiple labyrinth structure is formed between the rotor and the stator for preventing the ingress of contaminants from the tank and the egress of lubricant from the shaft. A self-aligning arrangement is constructed and arranged to permit the stator to shift axially along the shaft and compensate for various forces inflicted on the shaft as the shaft rotates.

Inventors: Thorson; John L. (Wauwatosa, WI), Komassa; Robert L. (Menomonee Falls, WI)

Assignee: Mixer Systems, Inc.

International Classification: F16J 15/34 (20060101); F16J 015/447 ()

Expiration Date: 01/02/2018