The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1984
Filed:
Dec. 16, 1981
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
According to the present invention, there is provided a vacuum cleaner which comprises a dust collector detachably installed in a main body of the cleaner. A primary filter composed of a horizontal wall and a vertical wall is disposed within the dust collector. Both the horizontal and vertical walls are permeable to air and include a dust filter. A secondary filter is disposed behind the vertical wall of the primary filter. A first path for dust is defined btween the horizontal wall of the primary filter and the bottom of the body and merged into a second path developed between the vertical wall of the primary filter and the second filter. Preferably, the horizontal and vertical walls of the primary filter include a coarse mesh for trapping relatively large dust and the secondary filter includes a fine mesh for trapping relatively small dust which has passed through the primary filter. A lid is provided on the side of the primary filter opposite the vertical wall for discharging dust accumulated on said primary and secondary filters.