The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 1989
Filed:
Sep. 14, 1987
Jack T Bevington, Ashland, OH (US);
Alan B Channell, Ashland, OH (US);
McNeil (Ohio) Corporation, St. Paul, MN (US);
Abstract
A multistage centrifugal pump, incorporates a first housing (14) having a cylindrical wall (30) defining a portion of the outer surface of the pump. A first diffuser (15) is fixed to the first housing (14) and has a discharge opening (43). A first impeller (16) is rotatably received within the first housing (14) in operative association with the first diffuser (15). The first impeller (16) includes an inlet opening (25). At least a second housing (14) is provided concentric with, and axially adjacent to, the first housing (14) and has a cylindrical wall (30) defining a portion of the outer surface of the pump. A second diffuser (15) is fixed to the second housing (14) and has a discharge opening (43). A second impeller (16) is rotatably received within the second housing (14) in operative association with the second diffuser (15). The second impeller (16) has an inlet opening (25) fluidly communicating with the discharge opening ( 43) of the first diffuser (15). A pilot region (32) is provided to axially align the first housing (14) with the second housing (14). A driven pump shaft (21) is operatively connected to each impeller (16). An inlet chamber (52) fluidly communicates with the inlet opening (25) of an impeller (16); and a discharge chamber (60) fluidly communicates with the discharge opening (43) of a diffuser (15).