My pleasure
I just wish my spelling had been better.
I have often wondered why N American Hoovers did not follow this, shall we say, "conventional" line, especially as (mainly) Electrolux seemed to do well with them but developed along a path of relativly small physical motor surronded by a paper bag - Portable, Slimline and Celebrity for quite a few years, apparently until the "Electronic" series similar to our Sensortronic range, which looks like a return to a "conventional" layout. That said, neither the Portable nor Celebrity (we did not have the Slimline) were popular here, although the Constellation was, hugely.
I might add that two other US designs "imported" here, the GE Swivel Top and Eureka VibraBeat (1010?) were not popular either although they were with companies which did not have the pedigree or advertising clout of either Hoover or Electrolux
From following all the great threads here it seems to me that the need for innovation and therefore competitor differentiation was much stronger in the US than here (and that is no surprise as the market was a geat deal more developed than ours was at the time) so perhaps the cannister could be percieved as "old hat". It is my impression though, that neither Hoover nor Electrolux were actually the most innovative manufacturers from the 1950s onwards (and that is NOT to decry either their performance or quality), with the exception of the DAM which clearly was a breakthrough, where there were a wide variety of solutions to the same problem - getting the dirt off the floor, walls and upholstry and into a bag.
Al