Patent · US Active

Downhole motors and pumps with asymmetric lobes

US8888474B2 · kind B2 · utility

18Cited by

18References

18Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

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

Key dates

Filing date	Sep 8, 2011
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Nov 29, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49242
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an aspect, the disclosure provides an apparatus for use downhole. In one aspect the apparatus includes a rotor with lobes disposed in stator with lobes, wherein at least one of the contours of the rotor lobe and the contour of the stator lobe is asymmetric.

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