| 摘要 |
<p>The stump with locking ridge (5 or 5', 5'', 5''') represents if inserted into the vacuuming hose (3) and applied across the elastic flange (4), a barrier for dust and small particles. The concept of the stump represents the most natural and therefore also most logical solution of a dust barrier, while the stump can be manufactured easily and it can also be applied simply in any vacuum cleaner using dust bags with elastic flange. This invention represents a universal solution for most vacuum cleaners.</p> |
