(under subclass 258) Method or apparatus concerning the application of a load or cyclic force to cause consolidation of the formation.
SEE OR SEARCH CLASS
173, Tool Driving or Impacting, appropriate subclasses for details of means to drive or deliver a blow to a tool.
404, Road Structure, Process, or Apparatus,
122+, for rotating drum compacting devices, and especially subclass 127 for rotating drum compacting devices specific to slopes or trenches. As between Class 404 and Class 405, rotating drum compacting devices will be placed in Class 404 regardless of the disclosed utility. Class 405 will take those patents which claim rotating drum compacting combined with an additional operation of the Class 405 type. Further, see subclass 133 of Class 404 for tampers used to prepare a road bed.
