US PATENT SUBCLASS 111 / 111
.~.~ Runner opener

Current as of: June, 1999
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111 /   HD   PLANTING

100  DF  PLANT SETTING {8}
109  DF  .~ Drilling machine (i.e., furrow opener) {3}
111.~.~ Runner opener

DEFINITION

Classification: 111/111

Runner opener:

(under subclass 109) Apparatus wherein the opening element is

symmetrically arranged with respect to the line of draft, has an earth- breaking portion which extends downwardly and rearwardly from the top front portion of the element, and has side portions extending rearwardly and diverging outwardly from the earth- breaking portion and which become generally planar and parallel to each other towards the rear of the element so that the element has an overall shape which resembles the bow portion of a boat.

(1) Note. This definition comprehends flat-bottomed structures or structures which have a bottom which is V-shaped in cross-section.

SEE OR SEARCH THIS CLASS, SUBCLASS:

125, for runner-type openers used in con-junction with a liquid or gas soil treat ment.

152, for runner-type openers used with seed depositors.

SEE OR SEARCH CLASS

172, Earth Working, 721+, runner-type openers, per se.