Sears Central Vacuum
I think introduction was early 60s.Same as Whirlpool 'JackVac'.(That would put vac jacks throughout your home just as the phone company was promoting phone jacks.)The early super deluxe was connected to plumbing and when the vac shut off water flushed the dirt down drain.They had great tool caddy that was same as tool storage on deluxe canister of that time.You then hung caddy under hose holder and 2 wands with rug nozzle attached were held by clip on front of hose holder.Power Mates were same as canisters of same year.The power adapter was a short section of wand with P Mate connection and switch that went between PM & hose,then cord to electric outlet nearest to vac outlet.On earliest vac outlet you open door,insert hose,then touch low voltage switch in upper corner.Later just open door.Don't think there was ever a Sears outlet with PMate connection.