Patent ID: 8176593
Filing Date: 2012-05-15
Classification: B08B,B65H

Abstract:
1. A rotary drum drain cleaning apparatus having a cable monitoring system, the apparatus comprising: a frame assembly; a first rotatable member rotatably supported on the frame assembly, the first member defining an interior hollow region; a second rotatable member rotatably supported on at least one of the first rotatable member and the frame assembly, the second member defining a cable outlet; a flexible cable at least partially disposed in the first member and extending through the cable outlet of the second member, wherein upon displacement of the cable through the cable outlet, the second rotatable member rotates; and a system for measuring relative rotation of the first member and the second member to thereby monitor the length of cable extended or retracted relative to the drain cleaning apparatus, wherein the system includes at least one first marker affixed to the first rotatable member, at least one second marker affixed to the second rotatable member, and at least one sensor assembly adapted for sensing the at least one first marker and the at least one second marker.