US PATENT SUBCLASS 405 / 160
.~.~.~ Condition responsive

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

154  DF  PIPE OR CABLE LAYING, RETRIEVING, OR UNDERWATER MANIPULATION {6}
158  DF  .~ Submerging, raising, or manipulating line of pipe or cable in or from marine environment {7}
159  DF  .~.~ Entrenched or buried {3}
160.~.~.~ Condition responsive

DEFINITION

Classification: 405/160

Condition responsive:

(under subclass 159) Method or apparatus wherein the string or conduit is positioned beneath the bottom by a device having means for sensing a characteristic (e.g., tension in a line, surface contour of the bottom) or the occurrence of a predetermined event in the device, its environment, or the string or conduit, and regulating or modifying the operation of the device in accordance with said sensed characteristic or event.

SEE OR SEARCH THIS CLASS, SUBCLASS:

175, for condition-responsive apparatus for burying pipe or cable in the earth surface, but not under a body of water.