Miniaturized direct current fan

Details Miniaturized direct current fan Miniaturized direct current fan

1989-07-06

1991-07-02

Cuomo, Peter M.

Pumps

Motor driven

Motor within rotary pumping member

4174237, 41742312, F04B 3504

Patent

active

050282166

ABSTRACT:
An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor wherein the rotor is covered by a thermally-insulative impeller. The rotor is supported by a bearing tube formed of plastic, integrally moulded with a mounting flange. In one embodiment, the fan casing forms part of the integral plastic molding.

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patent: 4337405 (1982-06-01), Hishida
patent: 4373861 (1983-02-01), Papst et al.
patent: 4564335 (1986-01-01), Harmsen et al.
patent: 4734015 (1988-03-01), Wrobel
patent: 4743173 (1986-05-01), Wrobel

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