sentences:  Koolvac
  
  Koolvac was a robotic vacuum cleaner sold in the U.S. by former iRobot distributor Koolatron, owned by Canadian Urus Industrial Corp. iRobot filed a lawsuit against Koolatron, claiming that Koolvac was an unauthorized copy of their Roomba model.iRobot won the court case and Koolatron was prohibited from further sales of Koolvacs within the United States.