US PATENT SUBCLASS 37 / 321
.~.~ With means to introduce lift agent directly into suction pipe

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


37 /   HD   EXCAVATING

307  DF  BENEATH A BODY OF WATER (E.G., DREDGER) {11}
317  DF  .~ Suction {8}
321.~.~ With means to introduce lift agent directly into suction pipe {1}
322  DF  .~.~.~> With downstream directed jet nozzle

DEFINITION

Classification: 37/321

With means to introduce lift agent directly into suction pipe:

(under subclass 317) Apparatus wherein the suction of the dredged material is enhanced by adding a fluid or buoyant substance to the dredged material at or near the suction inlet. [figure] [caption]A - Suction pipe; B - Dredge; C - Barge; D - High-pressure lift agent

(1) Note. The dredged material is drawn toward the surface of the water body by direct contact or entrainment with another fluid to create second stage or secondary acceleration of the dredged material.

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

5+, for means to bore a submerged formation; subclasses 65+ for process of boring with fluid.

406, Conveyors: Fluid Current,

93+, for means to introduce booster fluid into conveyors.

417, Pumps, 118+, wherein the liquid is pumped by supplying gaseous

motive fluid to the pumping chamber.