US PATENT SUBCLASS 37 / 350
.~ Having screw digger

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

347  DF  DITCHER {8}
350.~ Having screw digger {1}
351  DF  .~.~> With conveyor

DEFINITION

Classification: 37/350

Having screw digger:

(under subclass 347) Apparatus including a trenching tool of the auger type with a helical surface rotated about a longitudinal axis. [figure] [caption]A - Tractor or excavator; B - Cutter element; C - Spiral or screw digging element; D - Discharge pipe; E - Ditched material

SEE OR SEARCH CLASS

198, Conveyors: Power-Driven,

624+, for a rotating conveyor section having a load engaging portion in the form of a helical surface.