Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

1998-09-09

2000-05-02

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15319, A47L 928

Patent

active

060557028

ABSTRACT:
A vacuum cleaner includes an optical dust sensor for detecting a quantity of dust which sensor is provided at a predetermined position of a suction path for sucking air by a suction force of the vacuum cleaner, whereby an output signal is supplied to a display device so that a display corresponding to the quantity of the sucked dust, which signal is output from the optical dust sensor and is varied in a stageless manner corresponding to the quantity of the dust.

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patent: 5572767 (1996-11-01), Ishikawa
patent: 5815884 (1998-10-01), Imamura et al.
patent: 5819367 (1998-10-01), Imamura

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