US 10,309,231 B2 · Non-metallic vertical turbine pump

Abstract

A non-metallic vertical turbine pump and a method of manufacturing same are provided. In accordance with one embodiment, the vertical turbine pump can include a motor, and a drive shaft coupled to the motor for rotation, a casing with a mixed flow diffuser including a diffuser hub and diffuser vanes that project out from the diffuser hub, and a mixed flow impeller configured to rotatably fit inside the casing, having an impeller hub, impeller vanes, extending from the hub, and a front and a back shroud connected to opposing ends of the impeller vanes. At least one of the mixed flow impeller and the mixed flow diffuser can be made of a non-metallic material and is a singular homogenous component.

Claims20

Dependent claims

A method of molding a non-metallic component of a vertical turbine pump, comprising:

providing a wax core having structure that defines respective openings defined by a non-metallic vertical turbine pump component;
fabricating cutouts in the wax core, wherein the cutouts are configured to define respective structure of the non-metallic vertical turbine pump component;
introducing an oriented fiberglass into the cutouts and surrounding a first end and a second end of the wax core with the oriented fiberglass, wherein the first end and the second end are opposite ends;
placing the wax core with the oriented fiberglass into a mold cavity;
subsequently injecting a resin into the mold cavity;
subsequently melting the wax core;
and
forming the non-metallic vertical turbine pump component by melting the wax core.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/138,855Filed 26 Apr 2016 · division

Priority

17 Aug 2010

Published

US 2016/0237830 A118 Aug 2016

Granted

4 Jun 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification38 codes

B29C 70/30
Shaping operations therefor: shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e.…
B29C 33/3842
Characterised by the material or the manufacturing process: manufacturing moulds, e.g. shaping the mould surface by machining
B29C 33/40
Characterised by the material or the manufacturing process: plastics, e.g. foam or rubber
B29C 33/52
With means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles: soluble or fusible

Family

Application61/374,452Us provisional application · filed 17 Aug 2010

Application13/211,929Parent of this division · filed 17 Aug 2011

US 2016/0237830 A1Pre-grant publication · published 18 Aug 2016

US 9,347,456 B2Parent of this division

US 2012/0213632 A1Published application

US 10,309,231 B2This patent

From the US filing history. Foreign family members aren’t listed.

Non-metallic vertical turbine pump

Life of this patent

Non-metallic vertical turbine pump

Life of this patent

Abstract

Claims20