Portable air-blowing working machine

Details Portable air-blowing working machine Portable air-blowing working machine

1998-11-13

2000-08-29

Moulis, Thomas N.

Rotary kinetic fluid motors or pumps

Axially opposed working fluid paths to or from runner

Pump impeller means

415 581, F01D 112

Patent

active

061098655

ABSTRACT:
A portable air-blowing working machine includes a prime mover and an air-blowing system. The air-blowing system incorporates first-stage and second-stage centrifugal air-blowing sections, which are rotatably driven by an output shaft of the prime mover and are interconnected by an air-blowing passage for delivering air discharged from the first-stage air-blowing section to the intake of the second-stage. In operation, external air is drawn into the first-stage air-blowing section, increased therein in velocity and pressure, and then continuously discharged via the air-blowing passage to the second-stage air-blowing section, where the air is further accelerated and compressed before being finally discharged to the atmosphere.

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patent: 4523896 (1985-06-01), Lhenry et al.
patent: 4644606 (1987-02-01), Luerken
patent: 4725196 (1988-02-01), Kaneki et al.
patent: 4929149 (1990-05-01), Greenspan
patent: 5704761 (1998-01-01), Kobayashi et al.
patent: 6004093 (1999-12-01), Ishikawa

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