A housing of a vacuum cleaner nozzle has an opening in which a brush disk is located so that bristles of the disk extend outwardly of the opening. A journal pin for the brush disk extends with one end portion into a tubular socket formed in the housing, and has another end portion engaged by a single-point...http://www.google.com/patents/US3959848?utm_source=gb-gplus-sharePatent US3959848 - Vacuum cleaner nozzle construction
