Patent ID: 7055203

Claim:
A tube cleaning machine for smooth bore tubes and enhanced tubes comprising a speed adjustable, reversible drive motor, a tube cleaning brush, a flexible drive shaft being driven in rotation at one end by said motor and having the brush affixed at its other end, a sheath encasing the drive shaft and defining an interior passage for flow of cleaning medium of water and chemical components from the machine to the brush, the machine having a water side including a water solenoid valve and a water pump for delivering to said sheath, the machine further having a chemical side including a chemical solenoid valve and a chemical injector for adding cleaning chemical to the water side, an actuation system for operating the drive motor in forward and reverse rotation, the water side, and the chemical side to provide cleaning medium to the sheath interior passage, the actuation system being effective to operate the water solenoid valve and the chemical solenoid valve on forward rotation of the drive motor, and the water solenoid valve on reverse rotation of the drive motor so that in forward drive both water and chemical flow to the cleaning brush and in reverse rotation only water flows to the cleaning brush, and means for adjusting drive motor speed to select optimum brush rotation for smooth bore and enhanced tubes.