Suction cleaner

Details Suction cleaner Suction cleaner

1989-05-11

1990-07-10

Nozick, Bernard

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55DIG34, B01D 4600

Patent

active

049404741

ABSTRACT:
In a suction cleaner comprising a housing (10) having an inlet (11), a filter chamber (12) with a filter bag (13), a suction fan (14) with a motor (15), and an outlet passage (17) through which filtered air passes from the suction fan to an outet (16), the motor is provided with a control circuit (20) adapted to be activated by a first pressure switch (21) which is actuated by the underpressure in the filter chamber (12) in order to control the motor power at a predetermined level. According to the invention, the suction cleaner is provided with a second pressure switch (22) which is actuated by the pressure in the outlet (17) and adapted to activate the control circuit (20) when said pressure exceeds a predetermined level.

REFERENCES:
patent: 3180071 (1965-04-01), Nolte
patent: 4294595 (1981-10-01), Bowerman
patent: 4784675 (1988-11-01), Leber et al.
patent: 4786295 (1988-11-01), Newman
patent: 4820317 (1989-04-01), Fahey

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