Rotor shaft bearing design and coupling mechanism

Details Rotor shaft bearing design and coupling mechanism Rotor shaft bearing design and coupling mechanism

2006-04-18

2006-04-18

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

Reexamination Certificate

active

07029246

ABSTRACT:
An improved magnetic drive pump is disclosed with improved bearing support for the proximal and distal ends of the rotor shaft. Further, an improved mechanism to couple the inner magnet assembly to the rotor shaft is also disclosed. Finally a mechanism for sealing the pump chamber from the interior of the canister that surrounds the inner magnet assembly is disclosed which permits a separate supply of coolant to be used for cooling the inner magnet assembly and the proximal end of the rotor shaft wherein such a coolant is not the fluid being pumped in the pump chamber. The pump chamber is isolated from the interior of the canister.

REFERENCES:
patent: 3238883 (1966-03-01), Martin
patent: 4047847 (1977-09-01), Oikawa
patent: 4065235 (1977-12-01), Furlong et al.
patent: 4111614 (1978-09-01), Martin et al.
patent: 4613289 (1986-09-01), Kotera
patent: 4871301 (1989-10-01), Buse
patent: 6722854 (2004-04-01), Forsberg
patent: 1 096 149 (2001-05-01), None
European Search Report for EP 04101988.6 dated Aug. 9, 2004.

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