US PATENT SUBCLASS 37 / 318
.~.~ Having intake screen

Current as of: June, 1999
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37 /   HD   EXCAVATING

307  DF  BENEATH A BODY OF WATER (E.G., DREDGER) {11}
317  DF  .~ Suction {8}
318.~.~ Having intake screen {1}
319  DF  .~.~.~> And material size reducer (e.g., crusher)

DEFINITION

Classification: 37/318

Having intake screen:

(under subclass 317) Apparatus including a grid made of materials such as wire cloth, grate bars, or perforated material being adapted to allow only dredged material of a predetermined size to enter the suction device. [figure] [caption]A - Suction pipe; B - Discharge end; C - Inlet end; D, E - Screen rods

SEE OR SEARCH CLASS

209, Classifying, Separating, and Assorting Solids,

233+, for a sifter for separating solids.