.~ Plural earth engaging parts relatively movable because of operation {2}
715
.~.~ Rotary landslide
DEFINITION
Classification: 172/715
(under subclass 714) Apparatus in which the implement is provided with a longitudinal portion to receive the side pressure of the earth working element and guide it, said portion comprising an element rotatable about a substantially vertical axis to reduce friction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
669, for earth working elements with wheels which serve to sustain a portion of the vertical load.
