US PATENT SUBCLASS 254 / 236
.~.~ Having intermeshing gears for driving screw

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

199  DF  PORTABLE IMPLEMENTS OR APPARATUS FOR TENSIONING FLEXIBLE MATERIAL OR FOR EXTRACTING STUMPS OR POLES {12}
231  DF  .~ Including screw drive {4}
236.~.~ Having intermeshing gears for driving screw

DEFINITION

Classification: 254/236

Having intermeshing gears for driving screw:

(under subclass 231) Implements or apparatus in which either the rod, rider or threaded element is rotated about its axis by a drive train including two or more gears having teeth engaged with each other.