Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2005-02-01
2010-10-05
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S415100
Reexamination Certificate
active
07805803
ABSTRACT:
A suction nozzle for a vacuum cleaner that can be connected to a suction pipe and/or a suction tube of the vacuum cleaner includes a nozzle part that can be connected to the suction pipe or the suction tube by means of a tubular connection part. A dust sensor is arranged in the flow path of the vacuum cleaner, the signals thereof being evaluated by a battery-operated electronic control device that can be activated by a low-pressure switch. During operation, said control device controls a display device displaying the dust flow. The control device, the low-pressure switch, the display elements displaying the dust flow, and a battery compartment for receiving the batteries are arranged in a housing formed on the upper side of the tubular connection part. The dust sensor is arranged beneath the housing, inside the upper region of the connection part, in the dust air stream.
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Andrup Klemens
Becker Diethard
Kara Seyfettin
Liebig Oliver
Schultz Rainer
Leydig , Voit & Mayer, Ltd.
Miele & Cie. KG
Redding David A
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