By-pass type portable vacuum cleaner

Details By-pass type portable vacuum cleaner By-pass type portable vacuum cleaner

1978-08-21

1980-07-22

Moore, Christopher K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15413, A47L 524

Patent

active

042132240

ABSTRACT:
A portable vacuum cleaner with a bypass fan arrangement: the main fan draws air into the vacuum cleaner housing axially and discharges it radially from the housing; a plenum chamber receives the air from the housing outlet and redirects the outlet air in a direction away from the housing inlet; the motor for the main fan is cooled by a motor cooling fan drawing air over the motor from the end of the motor housing opposite its inlet end; the main air flow and cooling air flows being separate; the housing is shaped internally to assure the separation of air flows just described.

REFERENCES:
patent: 2729303 (1956-01-01), McMahan
patent: 3477087 (1969-11-01), Robinson
patent: 3484890 (1969-12-01), Case

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