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| Number | Title | Issue Date |
| 8182564 | Multi-layer particle collector assembly A multi-layer bag assembly is used with a housing for collecting particles from air flowing through the multi-layer bag assembly. Multi-layer bag assembly includes at least two bags arranged one inside the other. Each of the bags includes an air permeable filtering ... | 05/22/2012 |
| 7222391 | Wireless blackboard eraser and dust collector The present invention provides a battery-operated blackboard eraser and dust collector, which is composed of a shell body, an air blower, and an erasing plate set. The air blower is installed inside the shell body and the erasing plate set is disposed under the shel... | 05/29/2007 |
| 6908550 | Filter bag A filter bag for a pool cleaning device includes a bag structure, formed of nylon mesh material, and a discharge opening, formed by a zipper. The zipper allows for temporary access to the interior chamber of the bag by opening the zipper. ... | 06/21/2005 |
| 5774932 | Vacuum cleaner assembly An upright vacuum cleaner having a separable handle for compact shipping is disclosed. The separable handle includes a lower handle portion pivotally attached to a floor engaging unit and is joined to an upper handle portion at a parting plane. A dust bag... | 07/07/1998 |
| 5390392 | Vacuum cleaner bag cover with enlarged access opening The present invention is directed towards a vacuum cleaner bag cover which provides an enlarged access opening into the interior thereof. The vacuum cleaner bag, which is designed to enclose a removable dirt filtering and collecting bag, includes a main s... | 02/21/1995 |
| 5216779 | Upright soft bag type vacuum cleaner An upright vacuum cleaner having a filter bag housing assembly comprised of a fabric or otherwise flexible and air permeable bag housing resiliently supported at its bottom end relative to the operator handle such that the bag housing is always in tension... | 06/08/1993 |
| 5057131 | Vacuum cleaner filter bag assembly A permanent mounting assembly for a vacuum cleaner filter bag includes a plastic collar stitched to the porous body of the vacuum cleaner bag around the inlet opening thereof. The bag is mounted on the exterior surface of a projection on the vacuum cleane... | 10/15/1991 |
| 4240812 | Vacuum cleaner bag assembly A vacuum cleaner has an elongated porous outer bag for holding a filter bag over an air outlet. A hanger within the outer bag is positioned to suspend the outer bag from the vacuum cleaner, as well as to hold a pocket within the outer bag, so that spare f... | 12/23/1980 |
| 4119414 | Filter bag construction for a vacuum cleaner and method of operation A filter bag construction for filtering dirt, dust and other materials from the exhaust air flow of an upright vacuum cleaner, wherein an elongated, non-disposable outer fabric bag having a longitudinally extending delivery tube therein provides one stage... | 10/10/1978 |
| 4084948 | Vacuum cleaner filter bag assembly A filter bag assembly for a vacuum cleaner is disclosed. The assembly includes an elongated, relatively rigid, hollow tube coupled at one end to the exhaust of a vacuum cleaner. The tube runs upwardly along the handle of the vacuum cleaner and is attached... | 04/18/1978 |
| 4028074 | Vacuum cleaner filter bag A vacuum cleaner filter bag for an upright vacuum cleaner comprising an air pervious filter receptacle and an air impervious feed tube interconnected together so that the interior of the filter receptacle is in air-flowing relationship with the interior o... | 06/07/1977 |
