Pumps – Motor driven – Electric or magnetic motor
Patent
1994-10-12
1996-08-27
Freay, Charles
Pumps
Motor driven
Electric or magnetic motor
4174241, 415229, F04B 3504
Patent
active
055494595
ABSTRACT:
A canned motor pump includes a main housing with a rotatable shaft carrying an impeller, a high inertia flywheel mounted on the shaft, and a bearing housing stationarily mounted to the main housing. The bearing housing contains a convex radial bearing assembly pivotally mounted on an outer circumferential surface thereof for engagement with a bearing surface on an inner diameter of the flywheel. One embodiment of the convex radial bearing assembly employs a pad made of a self-lubricating, hard material and engageable with a hard metal surface on the inner diameter of the flywheel, and a second embodiment of the convex radial bearing assembly employs a pad with a hard metal surface on the outer diameter of the bearing housing and engageable with a sleeve made of a self-lubricating, hard material and located on the inner diameter of the flywheel.
REFERENCES:
patent: 1920723 (1922-08-01), Wallgren et al.
patent: 1920724 (1933-08-01), Wallgren et al.
patent: 1921957 (1933-08-01), Wallgren et al.
patent: 2094137 (1937-09-01), Wallgren
patent: 3450056 (1969-06-01), Heathcote et al.
patent: 4734009 (1988-03-01), Campbell et al.
patent: 4864703 (1989-09-01), Biondetti et al.
Freay Charles
Westinghouse Electric Corporation
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