Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

1984-09-28

1986-07-22

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

250574, 356438, A47L 928

Patent

active

046010823

ABSTRACT:
Vacuum cleaner for use in industry and household comprising a housing and an electric motor driving the blower generating the working vacuum, and optional maneuvering means for moving a suction nozzle over the material to be cleaned. There is provided in the area of the channel passed by the dust and dirt particles drawn in, an optical sensor comprising a light transmitter and a coacting light receiver so that the quantity of the dust and dirt particles drawn in at any time is detected. After comparison of the value so determined with a given threshold value, either a visual and/or an acoustic signal are obtained and/or a power variation of the electric motor driving the blower is effected.

REFERENCES:
patent: 3952361 (1976-04-01), Wilkins
patent: 4099065 (1978-06-01), Malinowski
patent: 4099861 (1978-07-01), Abel
patent: 4175892 (1979-11-01), Debrey
patent: 4297578 (1981-10-01), Carter
patent: 4413911 (1983-11-01), Rice

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