Vacuum bleed system for a vacuum cleaner or the like

Details Vacuum bleed system for a vacuum cleaner or the like Vacuum bleed system for a vacuum cleaner or the like

1975-10-29

1977-04-05

Moore, Christopher K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15327R, 1376371, A47L 900

Patent

active

040153088

ABSTRACT:
A floor care appliance is provided in which suction pressure (vacuum) of cleaner suction air may be discretely modified in a series of steps by selective stages of bleed of atmospheric air into the dirt-collecting bag containing partial vacuum chamber. A multi-pushbutton ensemble activates directly, movable valve members, permanently attached to pushbuttons, which port or close off or obstruct an aperture in the housing or a tunnel arrangement leading to the aperture and communicating with ambient air pressure.

REFERENCES:
patent: 3353452 (1967-11-01), Beck
patent: 3566921 (1971-03-01), Bell
patent: 3633239 (1972-01-01), Meyerhoefer
patent: 3779283 (1973-12-01), Hohulin

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