METHOD FOR PASSING A CABLE OR A WIRE THROUGH A PASSAGE

摘要

In a method of passing a wire, cable, optical fiber or the like through a passage, a coanda spiral flow unit is connected to the passage, a pressure release port is provided along the length from the coanda spiral flow unit to the end of the passage, compressed gas is supplied from a portable-type compressed gas supply through a coanda slit of said coanda spiral flow unit, a conductor or a guide is inserted through an end introducing port of said coanda spiral flow unit and passed through the passage. Smooth passing operations can be conducted at high speeds, even through a long and thin passage with many bends.