Vacuum cleaner with filter retained by plate - having central aperture accepting end of intermediate plate pivoted into position by closure of cover

摘要

The bag (5) draws air from the nozzle (13) through an opening (11) in its rigid retaining plate (4). To facilitate replacement, U-shaped rails (6) formed on the cover (2) of the dust chamber (3) guide the longer edges of the plate (4), against which an intermediate plate (7) carrying an elastic intermediate support (8) is pivoted. A spring (9) urges the conical inner end (10) of the support (8) into the opening (11) while its outer end (12) is pressed against the rim of the nozzle end. ADVANTAGE - Structure guarantees secure retention of filter bag which can be replaced hygienically and without difficulty.