초록 ▼

This invention provides a substantially flat plate hingedly connected to a substantially cylindrical pipe intended to be moved through the water in a generally longitudinal alignment, the plate extending behind the pipe during movement through the water. The hinged plate can be formed in modular sec

This invention provides a substantially flat plate hingedly connected to a substantially cylindrical pipe intended to be moved through the water in a generally longitudinal alignment, the plate extending behind the pipe during movement through the water. The hinged plate can be formed in modular sections, one or more plate sections being hingedly connected to a pipe section. Individual pipe sections are intended to be joined together to form a single longitudinally extending pipe, for example, for use as a dredge pipe in deep ocean dredging. The hinged plate can be directly connected to the main dredge pipe or the hinged plate can be connected to a substantially smaller diameter pipe which is in turn connected to the main pipe. The plate is preferably not less than two inches away from the outer surface of the main pipe. The plate is especially effective for the movement of substantially vertical pipe through water at speeds of up to about two knots.

대표청구항 ▼

In a length of pipe having a longitudinal axis and intended to be moved through the water in a direction transverse to the longitudinal axis, the improvement comprising a flat relatively thin plate pivotally connected to the length of pipe, the plate pivoting about an axis located radially outwardly

In a length of pipe having a longitudinal axis and intended to be moved through the water in a direction transverse to the longitudinal axis, the improvement comprising a flat relatively thin plate pivotally connected to the length of pipe, the plate pivoting about an axis located radially outwardly of the pipe circumference and substantially parallel to the longitudinal axis of the pipe and the plate extending along at least a major portion of the length of the pipe, whereby the drag and vibration stress exerted on the pipe during such transverse motions through water is substantially reduced.