US PATENT SUBCLASS 172 / 597
.~.~.~.~ Toggle joint between groups

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

518  DF  ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30}
579  DF  .~ Plural groups of disks {5}
584  DF  .~.~ Horizontally angularly adjustable group {9}
596  DF  .~.~.~ Tandem groups {1}
597.~.~.~.~ Toggle joint between groups

DEFINITION

Classification: 172/597

(under subclass 596) Apparatus comprising two struts each directly pivoted to a different group and directly pivoted to each other to form a toggle joint between the groups.