Patent · US Active

Progressive cavity pump/motor stator including framework elements and grooves defining chambers

US9540933B2 · kind B2 · utility

3Cited by
5References
12Claims
0Family size

Inventor

Key dates

Filing dateFeb 13, 2013
Grant dateJan 10, 2017
Priority date—
Expiry dateJun 21, 2033

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T29/49272
  • WIPO fieldEngines, pumps, turbines
  • WIPO sectorMechanical engineering

Abstract

A stator for a progressive cavity pump or motor includes a stator housing having a longitudinal axis. In addition, the stator includes a stator insert of a material moulded within the housing. The stator housing includes an outer tube having an inner surface. The stator housing also includes a plurality of framework elements disposed on the inner surface of the outer tube. Further, the stator housing includes at least one recess in the inner surface of the outer tube. The conjunction of the framework elements and the at least one recess define a plurality of chambers receiving insert material therein whereby the insert material is mechanically fixed axially, radially and torsionally within the outer tube.

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