US PATENT SUBCLASS 37 / 325
.~.~.~ With specific bearing, or means to lubricate or seal

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}
324  DF  .~.~ Including driven digger adjacent suction inlet (e.g., cutterhead dredger) {3}
325.~.~.~ With specific bearing, or means to lubricate or seal

DEFINITION

Classification: 37/325

With specific bearing, or means to lubricate or seal:

(under subclass 324) Apparatus combined with means related to a digging element in which a journal, gudgeon, pivot, pin, or other part revolves, oscillates, or slides or to a substance used to reduce friction between moving parts or to a device or system to create a nonleaking union between rotating elements (e.g., pump shafts).