PURPOSE: An apparatus for repairing an aged water pipeline and removing tree roots from a sewer pipe is provided to simultaneously obtain torque and thrust by jetting fluid through first and second jetting pipes.;CONSTITUTION: An apparatus for repairing an aged water pipeline and removing tree ...
This invention relates to the application of herbicides in sewer liens to kill tree roots inside the lines and preventing re-growth into the lines for years after application. It relates to the discovery that latex polymers, organosilicone surfactants, deposition agents and other surfactants can be...
This invention relates to the application of herbicides in sewer lines to kill tree roots inside the lines and preventing re-growth into the lines for years after application. It relates to the discovery that latex polymers, organosilicone surfactants, deposition agents and other surfactants can be...