A floor care appliance having a main housing with a handle extending from an upper portion thereof, and having a motor blower assembly affixed thereto with an inlet tube extending from a lower portion thereof. The main housing is fashioned with a rearwardly open cavity portion for receiving a filter...http://www.google.co.uk/patents/US4512057?utm_source=gb-gplus-sharePatent US4512057 - Floor care appliance
