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Publication of JPS4929188ApublicationCriticalpatent/JPS4929188A/ja
Publication of JPS55699B2publicationCriticalpatent/JPS55699B2/ja
A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
A47L9/19—Means for monitoring filtering operation
A—HUMAN NECESSITIES
A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
A47L9/2805—Parameters or conditions being sensed
A47L9/281—Parameters or conditions being sensed the amount or condition of incoming dirt or dust
