| 摘要 |
<p>A rotatable brush comprises: a shaft; at least one ring fastened releasably to this shaft; and a number of brush elements fastened releasably to this ring. According to the invention this has the feature that each brush element comprises a foot with a comparatively narrow portion located radially relatively to the outside and a comparatively broad portion located radially relatively to the inside; and that the foot fits into a hole debouching on the outer peripheral surface of the ring, which hole is large enough for passage of the comparatively narrow portion but is too small for passage of the comparatively broad portion, such that the foot is blocked for outward displacement relative to the ring.</p> |
