Electric pump for use in filtering system of a tropical fish tan

Details Electric pump for use in filtering system of a tropical fish tan Electric pump for use in filtering system of a tropical fish tan

1983-03-17

1985-04-23

Freeh, William L.

Pumps

Including disengageable rotary or frangible drive connection

417360, 417366, 417424, 310 89, 210169, 464160, F04B 900, F04B 3906, F04B 3504

Patent

active

045127247

ABSTRACT:
An electrically driven pump (10) for circulating liquid in a fish tank (16) or the like comprises a stator (32); an impeller-rotor assembly (80) comprising a shaft (82), a magnetic rotor (84) mounted on the shaft (82) for rotation in response to the electromagnetic field produced by the stator (32), and an impeller (100) rotatable with the rotor (84); and a housing (50, 60) disposed adjacent the stator (32) and defining a chamber for supporting the impeller-rotor assembly (80), the housing having inlet (44) and outlet (70) openings, one of the openings (70) being spaced from one end of the impeller-rotor assembly (80), the housing (50, 60) also defining a connecting channel (66) communicating the one opening (70) with the one end of the assembly (80) for bathing the one end of the assembly (80) in liquid.

REFERENCES:
patent: Re24909 (1960-12-01), Dochterman
patent: 465869 (1891-12-01), Maclean
patent: 2640338 (1953-06-01), Charvat
patent: 3074349 (1963-01-01), Zimmermann
patent: 3180267 (1965-04-01), Bemmann et al.
patent: 3306222 (1967-02-01), Simcox
patent: 3347451 (1967-10-01), Vind
patent: 3502030 (1970-03-01), Bukewihge et al.
patent: 3877845 (1975-04-01), Green et al.
patent: 3969043 (1976-07-01), Bright et al.
patent: 4053262 (1977-10-01), Horvath
patent: 4231718 (1980-11-01), Ruhl et al.
patent: 4244099 (1981-01-01), Haydon
patent: 4247265 (1981-01-01), Cavalcante
patent: 4283645 (1981-08-01), Hofmann
patent: 4404483 (1983-09-01), Lebkuchner

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