Axial-flow fan apparatus

Details Axial-flow fan apparatus Axial-flow fan apparatus

1986-10-22

1989-08-29

Smith, Leonard E.

Pumps

Motor driven

Motor within rotary pumping member

4174237, 310 68R, F04B 1702

Patent

active

048612375

ABSTRACT:
A light-weighted, inexpensive axial-flow fan apparatus which can prevent axial leakage of a magnetic flux of a brushless motor installed therein. A body member of the apparatus or a motor casing on which the motor is supported is made of a non-magnetic material such as a resin material, and a name plate formed from a magnetic seal is applied to the bottom of the motor casing so as to pass a magnetic flux therethrough.

REFERENCES:
patent: 4203048 (1980-05-01), Sato
patent: 4315363 (1982-02-01), Barone
patent: 4361776 (1982-11-01), Hayashi et al.
patent: 4499391 (1985-02-01), Sakamoto
patent: 4504751 (1985-12-01), Meier
patent: 4553075 (1985-11-01), Brown et al.
patent: 4554473 (1985-11-01), Muller
patent: 4588912 (1986-05-01), Shinmura et al.
patent: 4620139 (1986-10-01), Egami et al.
patent: 4626727 (1986-12-01), Janson
Patent Abstracts of Japan, vol. 9, No. 140 (E-321) [1863], Jun. 14, 1985 & JP-A-60 22 446 (Ricoh K. K.), 04 02 1985.
European Search Report EP 86 11 4713.

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