Vacuum cleaner fan

Details Vacuum cleaner fan Vacuum cleaner fan

1976-07-02

1978-04-04

Husar, C. J.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

415206, 415219C, 417423A, F01D 900

Patent

active

040824780

ABSTRACT:
A vacuum cleaner apparatus having a fan housing defining a plurality of corner portions and a wall structure extending across the housing and defining with the housing corner portions flow restricting air flow passages for conducting air from the fan impeller through a discharge portion of the housing with improved efficiency. The housing may be polygonal in transverse cross section and the wall structure may have turned edge portions for suitably cooperating with the housing in directing the air from the fan through the air flow passages.

REFERENCES:
patent: 341218 (1886-05-01), Blakely
patent: 815674 (1906-03-01), Bent
patent: 1004212 (1911-09-01), Smith
patent: 2114780 (1938-04-01), Juelson
patent: 2201867 (1940-05-01), McMahan
patent: 2330938 (1943-10-01), Williams
patent: 2439124 (1948-04-01), Bergstrom
patent: 3147909 (1964-09-01), Novitsky
patent: 3425621 (1969-02-01), Greenheck
patent: 3469519 (1969-09-01), Painter
patent: 3687568 (1972-08-01), Looker
patent: 3759627 (1973-09-01), Ehlinger
patent: 3791772 (1974-02-01), Keimpema
patent: 3829250 (1974-08-01), Samson, Jr.
patent: 3945771 (1976-03-01), Arakawa

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