Turbine ventilators and method of manufacture

Details Turbine ventilators and method of manufacture Turbine ventilators and method of manufacture

1976-12-08

1978-04-25

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Openwork

416187, 98 72, F03D 306

Patent

active

040860280

ABSTRACT:
Rotary turbine ventilators, wherein the vanes are connected to the base ring of the rotary element by a crimping or swaging operation instead of by welding or riveting. The method of manufacturing the ventilators is particularly adapted to the manufacture of aluminum ventilators because of the saving of labor and cost which results when aluminum ventilators are made thereby, although the method may be used to manufacture ventilators of other materials.

REFERENCES:
patent: 2272695 (1942-02-01), Evans
patent: 3239920 (1966-03-01), Laing
patent: 3267833 (1966-08-01), Artis et al.
patent: 3737966 (1973-06-01), Ranz
patent: 3739708 (1973-06-01), Felter
patent: 3844682 (1974-10-01), Morris
patent: 3854844 (1974-12-01), Ranz
patent: 3893383 (1975-07-01), Jones

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