Spartan Tool has been manufacturing drain cleaning machines for years. Their equipment is reliable and can tackle tough root cutting, main sewer line unclogging and routine household sink and toilet clogs. However, some of their equipment is alleged to infringe three patents.
Two of the infringements concern a motor-driven cable drum that normally holds a cleaning snake or cable. The drum and attached spindle are rotatably mounted to the frame by both a rear and front bearing assembly. spartan tool houston