Portable air-blowing working machine

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

1998-11-13

1999-12-21

Lopez, F. Daniel

Rotary kinetic fluid motors or pumps

Axially opposed working fluid paths to or from runner

Pump impeller means

415 541, 415 574, 415 572, 415 573, 415 581, 415 591, 415 99, 415100, 415101, 415102, 4151991, 154222, 15405, 416 63, F01D 302

Patent

active

060040939

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 a 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 section. The first-stage air-blowing section and the second-stage air-blowing section share a common unitary double fan, which includes fore and rear centrifuged fan blades mounted on the fore (first stage) and rear (second stage) faces of a main disk plate integrally mounted on the output shaft of the prime mover.

REFERENCES:
patent: 4231702 (1980-11-01), Gopalakrishnan et al.
patent: 4251183 (1981-02-01), Liu et al.
patent: 4451951 (1984-06-01), Satoh
patent: 4902199 (1990-02-01), McDonald et al.
patent: 5362203 (1994-11-01), Brasz

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