US PATENT SUBCLASS 172 / 622
.~.~.~ With actuator to vary inclination of teeth

Current as of: June, 1999
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172 /   HD   EARTH WORKING

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
619  DF  .~ Plural tool groups relatively vertically movable because of operation {9}
620  DF  .~.~ Parallel transverse tooth bars {2}
622.~.~.~ With actuator to vary inclination of teeth

DEFINITION

Classification: 172/622

(under subclass 620) Apparatus in which the angularity of the tooth bars may be changed to vary the angle of the teeth in vertically longitudinal planes and having actuating means to vary said angularity.

(1) Note. For the meaning of actuating see "actuator" in the class definition.

(2) Note. The actuator may positively move the tooth bars in only one direction with ground reaction force being relied upon to move the bars in the opposite direction.