A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
15/55
A47L 9/19 (2006.01) A47L 5/36 (2006.01) A47L 9/28 (2006.01)
Patent
CA 2005800
ABSTRACT OF THE DISCLOSURE A vacuum cleaner includes a cleaner body provided with an air inlet and an air outlet, a dust chamber provided in the cleaner body and communicating with the air inlet, a housing provided in the cleaner body, communicating with the dust chamber and the air outlet and accommodating an electric air blower, a regulator for regulating a suction force of the electric air blower, a pressure sensor provided on the suction side of the electric air blower, a comparator for comparing an output of a detected pressure from the pressure sensor with a present reference value, a varying device for varying the reference value in proportion to the suction force regulated by the regulator, and an indicator for indicating an accumulated state of dust in the dust chamber based upon the comparison result from the comparator.
Nakanishi Yuji
Tsuchida Yasuyuki
Marks & Clerk
Sanyo Electric Co. Ltd.
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