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2 013 664

(13)

(51)

IPC

(21) (22)

Application

4800881/06, 1990-01-18

(22)

Actual filing date

1990-01-18

(45)

Published

1994-05-30

(72)

Inventor

Makarov V.N.Zaslov V.Ja.Jur'Ev M.P.

(73)

Holder

Nauchno-Issledovatel'Skoe Ispytatel'Noe I Proektnoe Predprijatie Ventiljatorostroenija

CENTRIFUGAL FAN IMPELLER Russian patent published in 1994 - IPC

Abstract RU 2013664 C1

FIELD: fan manufacture. SUBSTANCE: centrifugal fan impeller has blades installed between carrying and cover disks; each blades has airfoil and leading-edge flap forming with the former space and slits; disks have through holes communicating with space which is shaped as two truncated cones joined together at smaller bases and having helical grooves on side surfaces. EFFECT: provision for operation in heavily dust-laden atmospheres. 5 dwg

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RU 2 013 664 C1

Authors

Makarov V.N.

Zaslov V.Ja.

Jur'Ev M.P.

Dates

1994-05-30—Published

1990-01-18—Filed