Patent · US Active

Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners

US9091264B2 · kind B2 · utility

8Cited by

6References

22Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Carsten Hohl · Sehnde, DE
Harald Grimmer · Celle, DE
Volker Krueger · Celle, DE

Key dates

Filing date	Nov 29, 2011
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Aug 14, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C13/008
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An apparatus for use downhole is disclosed that in one embodiment may include a rotor having an outer lobed surface disposed in a stator having an inner lobed surface, wherein the inner lobed-surface or the outer-lobed surface includes a sealing material on a first section thereof and a metallic surface on a second section thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.