Method and apparatus to manufacture a progressive cavity motor or pump
AssigneeSmith International, Inc.
InventorsJulien Ramier, Peter Cariveau, Pierre Lauric Dubesset
Life of this patent
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Abstract
A stator and a method of manufacturing at least a portion of a progressive cavity motor or pump include disposing a cylindrical shell within a cylindrical housing, disposing a stator mold within the cylindrical shell, disposing an elastomeric material between the stator mold and the cylindrical shell, removing the stator mold from within the elastomeric material, thereby forming an elastomeric material layer having a stator profile within the cylindrical shell, and removing the cylindrical shell from within the cylindrical housing, thereby forming a cartridge having the elastomeric material layer disposed within the cylindrical shell.
Claims23
A method of manufacturing at least a portion of a progressive cavity motor or pump, the method comprising:
- disposing a cylindrical shell within a cylindrical housing;
- treating at least a portion of an inner surface of the cylindrical shell to promote adhesion of an elastomeric material thereto;
- disposing a stator mold within the cylindrical shell;
- disposing the elastomeric material between the stator mold and the cylindrical shell;
- adhering the elastomeric material to the inner surface of the cylindrical shell;
- removing the stator mold from within the elastomeric material, thereby forming an elastomeric material layer having a stator profile within the cylindrical shell;
- and
- removing the cylindrical shell from within the cylindrical housing, thereby forming a cartridge having the elastomeric material layer disposed within the cylindrical shell.
A stator, comprising:
- a stator housing defining an inside diameter surface;
- a cylindrical shell disposed within the stator housing, the cylindrical shell defining an inner cylindrical surface and an outer cylindrical surface, the outer cylindrical surface being coupled to the inside diameter surface of the stator housing;
- an elastomeric material layer disposed within the cylindrical shell, the elastomeric material layer defining a stator profile within the cylindrical shell and the outer cylindrical surface,
- wherein the inner cylindrical surface of the cylindrical shell is adhered to the outer cylindrical surface of the elastomeric material layer;
- and
- an adhesive layer on the inner surface of the cylindrical shell, wherein the adhesive layer adheres the cylindrical shell to the elastomeric material layer, and
- wherein the cylindrical shell comprises an adhesive treatment layer on the inner cylindrical surface thereof that promotes adhering the elastomeric material layer to the cylindrical shell.
A method of manufacturing at least a portion of a progressive cavity motor or pump, the method comprising:
- treating an inner surface of a cylindrical shell to facilitate adhering an elastomeric material to the cylindrical shell, thereby forming an adhesive treatment layer on the inner surface of the cylindrical shell;
- disposing the cylindrical shell within a cylindrical housing;
- disposing a stator mold within the cylindrical shell;
- injecting the elastomeric material between the stator mold and the cylindrical shell;
- curing the elastomeric material;
- adhering the elastomeric material to the cylindrical shell;
- removing the stator mold from within the elastomeric material, thereby forming an elastomeric material layer having a stator profile within the cylindrical shell;
- removing the cylindrical shell from within the cylindrical housing, thereby forming a cartridge having the elastomeric material layer disposed within the cylindrical shell;
- disposing an adhesive material comprising a metal-to-metal bonding agent within a stator housing, thereby forming an adhesive layer within the stator housing;
- and
- adhering the cylindrical shell within the stator housing, so as to secure the cartridge within the stator housing.
Dependencies are inferred from the claim text.