The invention relates to methods and apparatuses for transporting {HEAD ~ a flow} of air and particulates through {TAIL ~ a vacuum cleaner} 
through
The invention relates to methods and apparatuses for transporting { HEAD ~ a flow } of air and particulates through { TAIL ~ a vacuum cleaner }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL