US PATENT SUBCLASS 172 / 215
.~.~ Tilting beam

Current as of: June, 1999
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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}
215.~.~ Tilting beam

DEFINITION

Classification: 172/215

(under subclass 213) Apparatus in which the oppositely oriented earth working elements are rigidly mounted at spaced points upon a longitudinally extending beam or frame which may be tilted about a horizontal transverse axis to alternately place the earth working elements in operative position.