Central vacuum cleaner with detachable filter assembly

Abstract From the Canadian patent

The present invention relates in part to a cyclonic separator type central vacuum cleaner assembly comprising four mutually detachable sub-assemblies, including:, a) a first sub-assembly comprising a vacuum motor/exhaust housing having at one end thereof an opening through which air is drawn into the housing by the operation of the vacuum motor; b) a second, mid-section, sub-assembly comprising a housing which is adapted to be secured to means for supporting the vacuum cleaner assembly as installed, and a vacuum cleaner inlet adapted to be secured to a system of dust collecting ductwork;, c) a third sub-assembly comprising a dust collecting housing for receiving and holding dust released …