H - Electricity – 02 – G
Patent
H - Electricity
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G
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H02G 1/06 (2006.01) E21B 7/18 (2006.01) E21B 7/28 (2006.01)
Patent
CA 1195515
Abstract of the Disclosure: A cable following apparatus especially suitable for replac- ing existing underground cable is disclosed herein. This apparatus includes a tubular main body disposed around and movable along a particular cable in a forward direction while an arrangement of water jets are used to cut through the soil surrounding the cable in front of the forwardly moving main body. At the same time, a high pressure stream of air or similar gas is directed into a circumferential area between the front end of the main body and the cable in a way which is intended to prevent particulate material from passing therebetween and damaging or otherwise disrupting operation of the apparatus.
434369
Electric Power Research Institute
Smart & Biggar
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