| 摘要 |
The invention concerns an improved apparatus for removing interior material coatings in various containers such as sanitary bowls. The apparatus may be partially or completely immersed or introduced into liquid in a container to be cleaned and due to an improved arrangement of high frequency vibrator elements in the interior of an immersed apparatus housing, a particularly efficient and uniform power emission may be achieved from the oscillating housing walls, said power providing cavitations at the container walls to be cleaned whereby coatings may be loosened in an effective manner without damaging the container walls. |
