US PATENT SUBCLASS 37 / 322
.~.~.~ With downstream directed jet nozzle


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  DF  .~.~ With means to introduce lift agent directly into suction pipe {1}
322.~.~.~ With downstream directed jet nozzle


DEFINITION

Classification: 37/322

With downstream directed jet nozzle:

(under subclass 321) Apparatus wherein a high-velocity fluid stream is forced under pressure out of an opening and is brought into contact with the dredged material to impart energy to the dredged material by the action of entrainment and frictional contact of the fluid. [figure] [caption]A - Nozzle; B - Material to be dredged; C - Suction pipe; D - Derrick; E - Dredger

SEE OR SEARCH CLASS

137, Fluid Handling,

602+, for systems having multiple inlets and a single outlet with mixing, diffusing, or injecting means.

406, Conveyors: Fluid Current,

93+, for apparatus having means to introduce booster fluid into conveyor; subclasses 151+ for subject matter wherein the load is drawn into the conveyor by creating a vacuum at the inlet by forcing or withdrawing conveying fluid into or from the fluid flow path at a point subsequent to the inlet.

417, Pumps,

151+, for subject matter in which motive and pumped fluids are brought into intimate contact in an enclosed flow path, the motive fluid having a higher velocity than the pumped fluid and imparting energy to the pumped fluid by the action of entrainment and frictional contact.