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:
Sep. 23, 2025
Filed:
May. 17, 2023
Anhui University of Science and Technology, Anhui, CN;
Sheng Xue, Huainan, CN;
Lefan Wang, Huainan, CN;
Xiaoliang Zheng, Huainan, CN;
Ping Liu, Huainan, CN;
Chen Shen, Huainan, CN;
Gang Jin, Huainan, CN;
Weibo Liu, Huainan, CN;
Sihang Zhang, Huainan, CN;
Jingyi Zhou, Huainan, CN;
ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY, Anhui, CN;
Abstract
The sealed coring device for an underground coalbed comprises a rib drill pipe assembly, a tail bearing pack, a motor cylinder assembly and a sampling cylinder assembly. The rib drill pipe assembly consists of a rib drill pipe, a tail drill pipe joint and a head drill pipe joint. The tail bearing pack is mounted in the tail drill pipe joint and configured for protecting an internal structure from relatively rotating during drilling of the rib drill pipe, so that the stability of the sampling cylinder is ensured. The motor cylinder assembly is mounted in the rib drill pipe and configured for providing power for action of a center shaft in the sampling cylinder assembly.