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:
Jan. 08, 2019
Filed:
Aug. 29, 2013
Halliburton Energy Services, Inc., Houston, TX (US);
Alben D'Silva, Edmonton, CA;
Edgar A. Estrada, Edmonton, CA;
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A downhole drilling motor comprises a housing located in a drill string. A power sleeve is located inside the housing and is operatively coupled to a drill bit. The power sleeve has a spiral lobed, elastomer covered internal surface. The power sleeve is rotatable with respect to the outer housing. A lobed shaft is located within the power sleeve. The lobed shaft has a spiral lobed outer surface. An anchoring assembly is engaged between the lobed shaft and the outer housing to limit rotation of the lobed shaft with respect to the housing such that a fluid flow through the downhole drilling motor causes the power sleeve to rotate with respect, to the outer housing and the lobed shaft.