Rotary kinetic fluid motors or pumps – With sound or vibratory wave absorbing or preventing means...
Patent
1983-11-09
1985-04-30
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
With sound or vibratory wave absorbing or preventing means...
415207, 415213C, 123 4149, 181204, F04D 2966
Patent
active
045141401
ABSTRACT:
An axial fan, preferably for the cooling systems of water-cooled internal combustion engines, comprises an impeller and an air duct housing provided with a fan guard which is separated by an annular gap from the tips of the impeller blades and is centered on the impeller axis by a support comprising radial arms attached to the fan guard. For noise reduction, the radial arms are supported on the hub of the impeller, on the side facing the fan shaft, by means of a roller bearing held by a mounting plate, and the mounting plate is made independent of the impeller bearing.
REFERENCES:
patent: 2668523 (1954-02-01), Lamb
patent: 4173995 (1979-11-01), Beck
patent: 4184471 (1980-01-01), Kirchweger et al.
Garrett Robert E.
List Hans
Nauman Timothy E.
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