Patent Number: 6,309,468

Title: Working method and cleaning device for cleaning a swimming pool

Abstract: A cleaning device (2) which can be moved backwards and forwards in a swimming pool (1) has a drive mechanism which can be switched to forward or backward travel and has one motor for a left-hand-side and one for a right-hand-side part of the drive mechanism and a control apparatus for controlling the drive mechanism. The control apparatus has a speed regulation apparatus for each part of the drive mechanism and has means for differentially controlling the speed of the two motors. The cleaning device has means on both parts of the drive mechanism for measuring the distances (d.sub.1, d.sub.2) covered in forward and backward travel. The angles (R.sub.1, R.sub.2) of change of direction are calculated and differentially controlled by the control apparatus on the basis of the measured distances (d.sub.1, d.sub.2) covered and an offset width (v) of the respective travel tracks. The advantage of the control method lies in the fact that angles of change of direction can be precisely executed and swimming pools of any desired shape can be reliably cleaned.

Inventors: Sommer; Hans-Rudolf (Schinznach-Dorf, CH)

Assignee: 3S Systemtechnik AG

International Classification: E04H 4/00 (20060101); E04H 4/16 (20060101); B08B 009/00 ()

Expiration Date: 10/30/2018