| 摘要 |
An improved self-propulsion hovering vacuum cleaner for domestic or industrial application designed with air outlets which are predisposed symmetrically along the longitudinal axis of the underside of the casing for directing more air to the front and back directions of the vacuum cleaner to achieve a more even distribution of air underneath the vacuum cleaner to reduce juddering or rocking effects. The underside of the casing has a curve up surface predisposed symmetrically along the longitudinal axis of the underside of the casing for better retention of air to enhance the hovering effect. In another embodiment of the present invention, there are air distribution channels predisposed symmetrically on both sides of the underside of the casing along the longitudinal axis of the underside of the casing, said air distribution channels are in communication with the air outlets for directing more air to the front and back directions of the vacuum cleaner. The improved hovering vacuum machine is also equipped with self-propulsion features and self-cooling features.
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