Pumps – Motor driven – Electric or magnetic motor
Patent
1988-04-19
1989-08-29
Croyle, Carlton R.
Pumps
Motor driven
Electric or magnetic motor
41742311, 4174241, 416244R, 464 24, 464160, F04B 900
Patent
active
048612405
ABSTRACT:
The pump comprises a pump body and a volute, mutually complementary with respect to one another, which once assembled form a waterproof container within which a permanent magnet rotor and an impeller are contained respectively in a first and in a second chamber. The stator part of the electric motor is provided externally to said waterproof container, and thus can never be affected by the liquid. The introduced improvements relate to the coupling between impeller and rotor and to the means adapted to make the rotor chamber waterproof, so that there cannot enter therein foreign matter, and in particular metallic dust, which by remaining associated with the permanent magnet of the rotor would prevent the rotation thereof, blocking its operation.
REFERENCES:
patent: 4703840 (1987-11-01), Bopp
patent: 4750872 (1988-06-01), Palliser
Cavalcante Vittorio
Marioni Elio
ASKOLL S.r.l.
Croyle Carlton R.
Josif Albert
Modiano Guido
Szczecina Jr. Eugene L.
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