US PATENT SUBCLASS 37 / 252
.~.~.~.~.~ Auger and impeller on single shaft

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

196  DF  SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
244  DF  .~ Motorized rotary excavating tool {8}
248  DF  .~.~ Diverse multistage rotary tools or tool portions (e.g., feeding and throwing, etc.) {1}
249  DF  .~.~.~ Including screw-type auger for first stage {2}
251  DF  .~.~.~.~ And centrifugal impeller for final stage {1}
252.~.~.~.~.~ Auger and impeller on single shaft

DEFINITION

Classification: 37/252

Auger and impeller on single shaft:

(under subclass 251) Apparatus wherein both the helical vane means and the planar vane means are carried by the same shaft.