An electrically powered mechanical appliance for the dry removal of dust and loose dirt from rugs, fabrics, and surfaces. Portable vacuum cleaners are widely used in domestic and industrial cleaning of surfaces that cannot be wiped or brushed, such as carpets, upholstery, tapestry, or highly contoured surfaces. Small hand vacuum cleaners are used for cleaning the inside of passenger cars. Large industrial tank cleaners are used in cleaning shops. Power saws may be equipped with vacuum cleaners which collect sawdust as it is made. Schools and offices have systems of centrally located dust collectors and fans for creating vacuum; pipes lead to room outlets at which cleaning appliances are attached.