The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2008
Filed:
Mar. 21, 2005
Majid S. Delpassand, Houston, TX (US);
Dennis Sell Norton, Spring, TX (US);
Majid S. Delpassand, Houston, TX (US);
Dennis Sell Norton, Spring, TX (US);
Dyna-Drill Technologies, Inc., Houston, TX (US);
Abstract
A progressing cavity stator and a method for fabricating such a stator are disclosed. Exemplary embodiments of the progressing cavity stator include a plurality of rigid longitudinal stator sections concatenated end-to-end in a stator tube. The stator sections are rotationally aligned so that each of the internal lobes extends in a substantially continuous helix from one end of the stator to the other. The stator further includes an elastomer liner deployed on an inner surface of the concatenated stator sections. Exemplary embodiments of this invention include a comparatively rigid stator having high torque output and are relatively simple and inexpensive to manufacture as compared to prior art rigid stators.