Patent Number: 6,297,638

Title: Method for controlling cable boring

Abstract: A boring operation performed by a boring head (18) is controlled to avoid interference with an adjacent buried conveyance (20) by first locating the conveyance and thereafter establishing a safety zone (24) thereabout. After establishing the safety zone, a check is made along the border (24a) of the safety zone adjacent the intended bore path for the presence of a monitor signal radiated by the bore head. If the bore monitor signal is detected at the safety zone border, an alert is generated.

Inventors: Eslambolchi; Hossein (Basking Ridge, NJ), Huffman; John Sinclair (Conyers, GA)

Assignee: AT&T Corp.

International Classification: E21B 7/04 (20060101); E21B 44/00 (20060101); E21B 47/022 (20060101); E21B 47/02 (20060101); G01V 3/08 (20060101); G01V 003/08 ()

Expiration Date: 10/02/2018