Attic fans

Details Attic fans Attic fans

1976-12-08

1978-08-22

Croyle, Carlton R.

Pumps

Motor driven

Pump and motor interconnected by endless flexible...

416 60, F04B 3504

Patent

active

041085809

ABSTRACT:
Attic fans of improved and economical design, wherein the blade hub, which in conventional attic fans is a cast hub is eliminated, and wherein the pulley on the blade shaft is eliminated.

REFERENCES:
patent: 1023272 (1912-04-01), Oakes
patent: 2198420 (1940-04-01), Winton
patent: 2975961 (1961-03-01), Rodick
patent: 3044689 (1962-07-01), Alldritt et al.
patent: 3190543 (1965-06-01), Goettl
patent: 3898019 (1975-08-01), Reznick et al.

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