Back to results
US 2009/0110579 A1Published application
Equal wall stator
AssigneeMoyno, Inc.
InventorMichael D. Amburgey
Life of this patent
Estimating the term…
Abstract
A method for making a stator assembly including the steps of providing a generally cylindrical stator casing, hydroforming the stator casing into a generally helical shape, and positioning a stator liner having a generally helical shape inside the stator casing.
Claims25
A method for making a stator assembly comprising the steps of:
- providing a generally cylindrical stator casing;
- hydroforming said stator casing into a generally helical shape;
- and
- positioning a stator liner having a generally helical shape inside said stator casing.
1 more element
A method for making a stator comprising the steps of:
- providing a generally cylindrical stator component;
- and
- hydroforming said stator component into a generally helical shape, wherein said hydroforming step includes filling said stator component with a fluid, placing a mold about said stator component, and increasing the pressure of said fluid by inserting an intensifier rod into said stator component to cause said stator component to expand radially outwardly and conform to said mold, wherein said hydroforming step includes placing said stator component in a state of compression, and wherein the compression of said stator component and the movement of said intensifier rod are independently controlled.
A progressing cavity pump comprising:
- a rotor;
- and
- a stator, wherein said rotor is rotationally disposed inside said stator such that rotation of said rotor relative to said stator causes material in said stator to be pumped therethrough, wherein said stator includes a stator casing and a stator liner disposed generally inside said stator casing, said stator liner having a generally radially outwardly-extending flange portion at least one end thereof with a sealing component formed as a single unitary piece with said flange portion.
A progressing cavity pump system comprising:
- a rotor;
- and
- a stator, wherein said rotor is rotationally disposed inside said stator such that rotation of said rotor relative to said stator causes material in said stator to be pumped therethrough, wherein said stator has a generally radially outwardly-extending flange portion at at least one end thereof, said flange portion having a beveled surface;
- a pump component having a beveled surface;
- and
- an end flange having a pair of beveled inner surfaces, wherein said end flange spans said pump component and said flange portion of said stator such that one of said beveled inner surfaces of said end flange is positioned immediately adjacent to said beveled surface of said flange portion, and the other beveled inner surface of said end flange is positioned immediately adjacent said beveled surface of said pump component to thereby sealingly couple said stator and said pump component together.
3 more elements
Dependencies are inferred from the claim text.