Pumps – Motor driven – Electric or magnetic motor
Patent
1992-09-11
1995-04-11
Bertsch, Richard A.
Pumps
Motor driven
Electric or magnetic motor
4174231, 4174237, 415146, F04B 1700
Patent
active
054052513
ABSTRACT:
An oscillating centrifugal pump is disclosed which has a housing, an impeller and a magnetic drive. The housing has a longitudinal axis, having a front end and a rear end that are spaced apart on the longitudinal axis. The housing includes a pumping chamber within and at the front end of the housing. The pumping chamber is created by a continuous transverse front wall that closes the pumping chamber at the front end of the housing, a transverse rear wall axially-spaced from said transverse front wall and has a central opening, and a longitudinal closed side wall which is between the front and rear transverse walls. The housing is closed except for an inlet in the housing that is outside of and is axially spaced from the pumping chamber. An outlet is provided in the longitudinal side wall of the pumping chamber, and the housing is free of mechanical bearings, flexing or external seals or apertures that lead to the exterior of the housing except for said inlet and outlet. The impeller is located in the pumping chamber and has an axial inlet and a radial outlet and a flow passage between the impeller inlet and outlet. The impeller is mounted on an elastic support, which provides limited freedom of angular oscillation for the impeller about the longitudinal axis of the housing.
REFERENCES:
patent: 3173656 (1965-03-01), Prees
patent: 4164690 (1979-08-01), Muller et al.
patent: 4304532 (1981-12-01), McCoy
patent: 5017103 (1991-05-01), Dahl
patent: 5112202 (1992-05-01), Oshima et al.
patent: 5253986 (1993-10-01), Bond et al.
Bertsch Richard A.
Wicker William
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