US PATENT SUBCLASS 172 / 442
.~.~.~ With actuator for angling groups relatively

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

439  DF  MAST TYPE HITCH (E.G., THREE POINT HITCH, ETC.) {10}
440  DF  .~ Angled gangs liftable as a unit {1}
441  DF  .~.~ Tandem gangs {1}
442.~.~.~ With actuator for angling groups relatively

DEFINITION

Classification: 172/442

(under subclass 441) Apparatus comprising an actuator for changing the angular relation in plan view of one row of earth working elements with respect to another row.

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

SEE OR SEARCH THIS CLASS, SUBCLASS:

580, for groups of disks adjusted by a power device.

591+, for groups of disks horizontally angled by a manual actuator, especially subclass 594 for double tandem groups so adjusted.