US PATENT SUBCLASS 172 / 217
.~.~ With movable deflector

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


172 /   HD   EARTH WORKING

204  DF  ALTERNATING FOR RIGHT OR LEFT HAND OPERATION (OTHER THAN SCRAPER) {10}
213  DF  .~ Tools oriented for movement in opposite directions {4}
217.~.~ With movable deflector

DEFINITION

Classification: 172/217

(under subclass 213) Apparatus having shiftable earth deflector means (e.g., moldboard) alternately cooperating with the earth working elements as the frame is moved in opposite directions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

218, for tools having a single earth breaking portion with an earth deflector means which is adjustable to move soil toward either side of the device.