Portable air-blowing working machine

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

1998-11-13

2000-06-20

Verdier, Christopher

Rotary kinetic fluid motors or pumps

Axially opposed working fluid paths to or from runner

Pump impeller means

415100, 415101, 415102, 4151991, 15405, F04D 1712

Patent

active

060770333

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 air-blowing sections. The inlet portions of the air-blowing passage are respectively positioned at the outer circumferential portion of a volute chamber of the first air-blowing section, and the outlet portion of the air-blowing passage is positioned near the air-intake port of the secondary air-blowing section.

REFERENCES:
patent: 4231702 (1980-11-01), Gopalakrishnan et al.
patent: 4251183 (1981-02-01), Liu et al.
patent: 4451951 (1984-06-01), Satoh
patent: 4938661 (1990-07-01), Kobayashi et al.
patent: 6004093 (1999-12-01), Ishikawa

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