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US 8,215,014 B2Granted
Method for making a 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.
Claims16
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 while said stator casing is in a state of axial compression due to forces applied to an axial end of said stator casing, wherein said hydroforming step includes filling said stator casing with a fluid, placing a mold about said stator casing, and increasing the pressure of said fluid by inserting an intensifier rod into said stator casing to cause said stator casing to expand radially outwardly and conform to said mold, and wherein the axial compression of said stator casing and the movement of said intensifier rod are independently controllable;
- 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 axial compression, and wherein the axial compression by applying an axial compression force to an axial end surface of said stator component of said stator component and the movement of said intensifier rod are independently controlled.
Dependencies are inferred from the claim text.