Vacuum cleaner nozzle with double brush

In a vacuum cleaner having a wheeled nozzle defining a front suction inlet, and a suction passage, and means for providing a suction to said passage, the improvement comprising:

• a first brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a first transfer passage extending from said suction inlet adjacent said first brush to said suction passage;
• a second brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a second transfer passage extending from said suction inlet adjacent said second brush to said suction passage;
• means for rotating said first brush to sweep brushed material into said first transfer passage;
• and
• means for rotating said second brush to sweep brushed material into said second transfer passage, said first brush comprising a helical row of bristles having a twist in a first direction, and said second brush comprising a helical row of bristles having a twist in a second direction opposite said first direction.

In a vacuum cleaner having a wheeled nozzle defining a front suction inlet, and a suction passage, and means for providing a suction to said passage, the improvement comprising:

• a front brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a first transfer passage extending from said suction inlet forwardly adjacent said front brush to said suction passage;
• a rear brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a second transfer passage extending from said suction inlet rearwardly adjacent said rear brush to said suction passage;
• means for rotating said front brush to sweep brushed material forwardly upwardly into said first transfer passage;
• and
• means for rotating said rear brush to sweep brushed material rearwardly upwardly into said second transfer passage, each of said transfer passages opening generally tangentially to its associated brushes whereby the brushed material is swept substantially directly into the transfer passage by the rotating brush.

In a vacuum cleaner having a wheeled nozzle defining a front suction inlet, and a suction passage, and means for providing a suction to said passage, the improvement comprising:

• a first brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a first transfer passage extending from said suction inlet adjacent said first brush to said suction passage;
• a second brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a second transfer passage extending from said suction inlet adjacent said second brush to said suction passage;
• means for rotating said first brush to sweep brushed material into said first transfer passage;
• means for rotating said second brush to sweep brushed material into said second transfer passage;
• and
• means for stripping from the brushes material clinging to the periphery thereof at the entrance to the respective transfer passages, said entrance to the transfer passages being open downwardly from the stripping means to said suction inlet.

In a vacuum cleaner having a wheeled nozzle defining a front suction inlet, and a suction passage, and means for providing a suction to said passage, the improvement comprising:

• a first brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a first transfer passage extending from said suction inlet adjacent said first brush to said suction passage;
• a second brush rotatably mounted to said nozzle at said suction inlet;
• wall means on said nozzle defining a second transfer passage extending from said suction inlet adjacent said second brush to said suction passage;
• means for rotating said first brush to sweep brushed material into said first transfer passage;
• means for rotating said second brush to sweep brushed material into said second transfer passage;
• and
• means for stripping from the brushes material clinging to the periphery thereof at the entrance to the respective transfer passages, the opening to each of said transfer passages having a height adjacent the associated brush of approximately the radius of the brush and each said edge being disposed substantially at the level of the axis of rotation of the brush.

In a vacuum cleaner having a wheeled nozzle defining a front suction inlet, and a suction passage, and means for providing a suction to said passage, the improvement comprising:

• a first brush rotatably mounted to said nozzle at said suction inlet and having at least one row of bristles;
• wall means on said nozzle defining a first transfer passage extending from said suction inlet adjacent said first brush to said suction passage;
• a second brush rotatably mounted to said nozzle at said suction inlet and having at least one row of bristles, the rows of bristles of the first brush being interfitted between the rows of bristles of the second brush;
• wall means on said nozzle defining a second transfer passage extending from said suction inlet adjacent said second brush to said suction passage;
• and
• means for rotating said brushes in synchronization to sweep brushed material into said transfer passages.