Fan for ventilation

Details Fan for ventilation Fan for ventilation

1985-08-09

1986-06-17

Joyce, Harold

98 4208, 98116, F24F 706

Patent

active

045949409

ABSTRACT:
A ventilation fan structure has a fan blade-motor portion and a shroud portion independently affixable to the ceiling to reduce noise levels, improve aerodynamic efficiency, and facilitate installation. A mounting member is affixable to ceiling joists, one of which spans an opening in the ceiling for the fan structure. The drive motor and associated fan blades are mounted on the mounting member. The shroud surrounds the ceiling opening and embraces the fan blades. The mounting member extends through the shroud in its attachment to the joists.

REFERENCES:
patent: 1532635 (1925-04-01), Osbun
patent: 2278581 (1942-04-01), Dexter
patent: 2668491 (1954-02-01), Gerlitz
patent: 3064548 (1962-11-01), Field
patent: 4385550 (1983-05-01), Steiner et al.
patent: 4510851 (1985-04-01), Sarnosky et al.
"Direct Drive Whole House Fans", Spartan Electric Company, Fayetteville, N.C.
"Whole House Fan and Shutter System", Emerson Owners Manual, Model No. WH20W5, Emerson Environmental Products, Bennettsville, S.C., Dec. 1982.

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