Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Reexamination Certificate
2005-01-04
2005-01-04
Lee, Jong-Suk (James) (Department: 3673)
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
C405S159000, C405S164000, C405S169000, C037S367000, C172S684500, C172S741000
Reexamination Certificate
active
06837653
ABSTRACT:
A marine plough includes twin, complementary steering mechanisms, one or more soil-engaging fins, which are able to be steered, and a tow rope attachment mechanism that enables adjustment of the position of the tow rope retention point relative to the plough. This alters the position at which the line of a tow rope crosses the longitudinal axis of the plough, so that the plough can operate at offset tow positions. The tow rope attachment mechanism includes a bridle having two bridle limbs terminating at respective bridle limb retention points. The adjustment of the position of the tow rope retention point relative to the plough is done by moving the bridle rope retention points or adjusting the relative length of the bridle limbs. The bridle limb retention points can be moved, using cylinders, from towing positions to lifting positions at which the tow bridle can be used to lift plough in a substantially level attitude. The soil-engaging fins are carried by supporting skids, in turn carried by a steering member able to be pivoted relative to the plough about a substantially vertical axis. Ploughing depth can be adjusted by altering the vertical distance between the skids and the steering member.
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Lee Jong-Suk (James)
Schindler Edwin D.
The Engineering Business Ltd.
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