Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Repair – replacement – or improvement
Patent
1989-05-08
1990-06-26
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Repair, replacement, or improvement
175 62, 405142, 405146, E21D 1100, F16L 700
Patent
active
049367099
ABSTRACT:
A method and apparatus for laying pipes of low bearing force like a polyvinyl chloride pipe and others in the ground with a propulsion pipe laying method, wherein an excavation device to excavate a tunnel to lay pipes therein is propelled into the ground by a propulsion force exerted on a propulsion shaft joined behind an excavation device while the pipes to be laid are run over the propulsion shaft and propulsion shaft bodies are joined one after another to propulsion shaft bodies and the pipes are joined one after another to pipes. The propulsion shaft bodies have a supporting device on the outer periphery thereof which rigidly supports the inside surface of pipes run over the propulsion shaft. With this supporting power, pipes to be laid are propelled into the tunnel in accordance with an advancement of the propulsion shaft.
REFERENCES:
patent: 3402781 (1968-09-01), Sandberg
patent: 3605420 (1971-09-01), Booth et al.
patent: 3762174 (1973-10-01), Fikse et al.
patent: 4024721 (1977-05-01), Takada et al.
patent: 4673312 (1987-06-01), Nussbaumer
Kidoh Technical Ins, Co., Ltd.
Olsen Arlen L.
Taylor Dennis L.
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