Patent ID: 8413347
Filing Date: 2013-04-09
Classification: B08B,B65H

Abstract:
1. A method for determining a length of cable extended or retracted relative to a rotary drum drain cleaning device, the device including (i) a frame assembly, (ii) a first rotatable member rotatably supported on the frame assembly, the first member defining an interior hollow region, (iii) 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, and (iv) a flexible cable at least partially disposed in the first member and extending through the cable outlet of the second member, the method comprising: sensing relative rotational movement between the first member and the second member; providing information regarding the sensed relative rotational movement to a processor; and the processor determining length of cable extended or retracted relative to the device based upon the information.