US PATENT SUBCLASS 172 / 26.6
.~.~ Scraper part rearranged upon reverse movement

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

23  DF  DRIVEN FROM OR GUIDED BY STATIONARY OBJECT, OR ANCHORED {4}
26.5  DF  .~ Dragline scraper {1}
26.6.~.~ Scraper part rearranged upon reverse movement

DEFINITION

Classification: 172/26.6

(under subclass 26.5) Apparatus in which the scraper is adapted to be pulled in opposite directions by the cable or flexible means and in which some portion of the scraper apparatus is caused to move to and remain at a different position relative to some other portion when the direction of pull is reversed.

(1) Note. The relative movable portion of the scraper apparatus must comprise more than a mere continuation of the flexible means, such as a bail.