US PATENT SUBCLASS 198 / 668
.~.~.~.~ Pivotably

Current as of: June, 1999
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198 /   HD   CONVEYORS: POWER-DRIVEN

618  DF  CONVEYOR SECTION {26}
657  DF  .~ Screw {11}
662  DF  .~.~ Plural helical surface formations {4}
666  DF  .~.~.~ Coupled end-to-end {2}
668.~.~.~.~ Pivotably

DEFINITION

Classification: 198/668

(under subclass 666) Apparatus wherein the coupled formations are pivotably related one to another (e.g., the coupling is a universal joint).