Patent ID: 7444712

Claim:
A vacuum cleaner comprising: a vacuum cleaner housing having a receiving area; a vacuum cleaner motor arranged in the vacuum cleaner housing; an exchangeable filter arranged in the receiving area of the vacuum cleaner housing, wherein the filter has a through opening; a holding arm having an upper end connected to at least one of the vacuum cleaner housing and the vacuum cleaner motor and penetrating the through opening of the filter; a fastening member detachably connected to a lower end of the holding arm for securing the filter to the holding arm; wherein the lower end of the holding arm has a radial recess; wherein the fastening member has engagement elements engaging the radial recess when the filter is secured in a fastened state on the holding arm, wherein the engagement elements block removal of the fastening member from the lower end of the holding arm; wherein the fasting member has an actuating ring that is moveable between a locked position, in which the engagement elements secure the fastening member against removal from the holding arm, and a release position, in which the fastening member is removable from the holding arm.