Indicating device for vacuum cleaners

Details Indicating device for vacuum cleaners Indicating device for vacuum cleaners

A - Human Necessities

47

L

340/145, 73/3, 1

A47L 9/19 (2006.01) G01L 9/00 (2006.01) G01L 19/12 (2006.01)

Patent

CA 1115378

A B S T R A C T An indicating device for a vacuum cleaner having means which operates as a result of the pressure difference between the inside of a filter dust container and the outside thereof and is provided with means for communicating the degree of clogging of the dust container through a signalling device in the form of a light source or light sources that gives a visual indication of the amount of clogging of the paper dust container.

311247

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