Brian M Kent

US Patent:

51220326, Jun 16, 1992

Filed:

Jul 15, 1991

Appl. No.:

7/725921

Inventors:

Gerald N. Shields - Lake Forest IL
Brian Kent - Knollwood IL

Assignee:

Graymills Corporation - Chicago IL

International Classification:

F01D 2524

US Classification:

4152141

Abstract:

A disposable pump assembly adapted to be driven by a motor through an elongated shaft. The disposable pump assembly includes a pump body having a volute portion and an elongated riser portion extending upwardly from the volute portion. The riser portion is integrally joined to the volute portion by a neck defining a restricted opening leading from the riser portion to the volute portion. The elongated shaft is adapted to be inserted into the riser portion, through the restricted and into the volute portion of the pump body. The disposable pump assembly also includes a shaft-receiving impeller disposed in the volute portion of the pump body for driven movement by the motor. The impeller and the elongated shaft each have correspondingly shaped portions for interconnecting and driving the impeller upon insertion of the shaft through the riser portion and into the volute portion of the pump body. The volute portion of the pump body has an inlet opening and an outlet opening from which an outlet tube extends upwardly in spaced parallel relation to the riser portion. With this arrangement, the disposable pump assembly can be formed of a plastic material by a thermoforming or blow molding process in a manner accommodating rapid interconnection of a supply tube and the motor thereto.