Brush for cleaning inner tubular surfaces - consists of inflatable balloon to which strips of bristles are attached

摘要

The brush has a cylindrical base with a flexible periphery over which bristles are situated. The base consists of an inflatable balloon (a) made of gastight, flexible material, which, when deflated, can be folded into a small size. The outer surface of the balloon base has strips (b) made of flexible, elastic material and to which bristles (c) are adhered or riveted. The strips are annular, spiral or in straight lengths.