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:
Mar. 07, 2023
Filed:
May. 27, 2021
Applicant:
China University of Geosciences (Beijing), Beijing, CN;
Inventors:
Yu Wang, Beijing, CN;
Jiaxing Lu, Beijing, CN;
Zhiqiao Wang, Beijing, CN;
Baolin Liu, Beijing, CN;
Qin Zhou, Beijing, CN;
Tengteng Chang, Beijing, CN;
Assignee:
CHINA UNIVERSITY OF GEOSCIENCES (BEIJING), Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/02 (2006.01); E21B 4/00 (2006.01);
U.S. Cl.
CPC ...
E21B 4/006 (2013.01); E21B 4/02 (2013.01);
Abstract
A downhole power drilling tool includes a flow distribution shaft, an outer pipe and a multi-stage eccentric gear driving mechanism which are coaxially arranged, the flow distribution shaft is suspended and supported in the outer pipe by the multi-stage eccentric gear driving mechanism.