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US 6,183,226 B2Granted
Progressive cavity motors using composite materials
AssigneeSteven M. Wood
InventorsSteven M. Wood, Brian E. Spencer
Life of this patent
Estimating the term…
Abstract
The stator, rotor and/or flex shaft of a progressive cavity motor is made up of composite materials, e.g., fiberglass and resin, in a variety of combinations with and without bonded resilient elastomers. The composites are formulated to provide resiliency and non-resiliency where needed. The flex shaft between the rotary power source and the rotor is made of composite materials and designed to absorb the orbital and gyrational movement of the rotor.
Claims33
A progressive cavity motor comprising:
- a fixed stator having an internal helical groove;
- a helical rotor operational within a cavity formed between said stator and said rotor;
- wherein at least one of said stator or said rotor are comprised of a composite material formed of a plurality of filament fibers impregnated with a thermal setting resin;
- means to rotate said rotor by passing pressure fluid into said cavity;
- and
- means to connect the rotation of said rotor to rotary driven apparatus.
3 more elements
A progressive cavity motor comprising:
- a stator, said stator formed of a unitary support section having an outer cylindrical surface and a bonded internal helical surface section, said support section comprised of a substantially non-resilient composite material formed of a plurality of filament fibers from the group consisting of carbon fibers, boron fibers, ceramic fibers, glass fibers, thermoplastic fibers, natural fiber, metallic fibers, and synthetic fibers which said fibers are impregnated with a thermal setting resin;
- said helical surface section comprised of a bonded resilient elastomer material;
- a helical rotor operational within a cavity in said stator;
- means to supply pressure fluid to said cavity to rotate said rotor;
- and
- means to connect the rotation of said rotor to rotary driven apparatus.
3 more elements
A progressive cavity motor comprising:
- a stator, said stator formed of a unitary support section having an outer cylindrical surface and a bonded internal helical surface section, said support section comprised of a substantially non-resilient composite material formed of a filament fiber from the group of carbon fibers, boron fibers, ceramic fibers, glass fibers, thermoplastic fibers, natural fiber, metallic fibers, and synthetic fibers which are impregnated with a thermal setting resin;
- said helical surface section comprised of a bonded resilient elastomer material;
- a helical rotor operational within a cavity in said stator;
- means to supply pressure fluid to said cavity to rotate said rotor;
- and
- means to connect the rotation of said rotor to rotary driven apparatus, wherein said rotor is connected to a composite material flex shaft.
3 more elements
A progressive cavity motor comprising:
- a stator having an internal helical groove;
- a helical rotor operational with said stator forming cavities therebetween;
- means to supply pressure fluid to said cavities to cause rotation of said rotor;
- and
- a flex shaft formed of composite materials connected to said rotor at one end and to a rotary driven apparatus at the other end.
2 more elements
Dependencies are inferred from the claim text.