US PATENT SUBCLASS 172 / 334
.~.~.~ Seat counterbalanced beam

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

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
332  DF  .~ Tool manipulated with respect to mounting frame {5}
333  DF  .~.~ Arched wheel frame (i.e., straddle row, etc.) {9}
334.~.~.~ Seat counterbalanced beam

DEFINITION

Classification: 172/334

(under subclass 333) Apparatus including an operator's seat pivoted to the frame and also connected to the earth working elements so that the operator's weight provides an upward force on the earth working elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

431+, for other earth working apparatus having a seat or attendant's station including that in which the seat is movable by the attendant to manipulate the implement.