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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.:

US 12735960 B1

PDFFull Text
Date of Patent:
Sep. 15, 2026

Filed:

Nov. 03, 2021

Rear-mounted double-channel abrasive jet cutting device

Applicant:

Ccteg Chongqing Research Institute, Chongqing, CN;

Inventors:

Yongjiang Zhang, Chongqing, CN;

Lindong Guo, Chongqing, CN;

Xusheng Zhao, Chongqing, CN;

Haitao Sun, Chongqing, CN;

Jianjun Cao, Chongqing, CN;

Chengcheng Li, Chongqing, CN;

Zhanjin Lu, Chongqing, CN;

Zhenfei Huang, Chongqing, CN;

Fei Ji, Chongqing, CN;

Zunyu Xu, Chongqing, CN;

Junjian Xu, Chongqing, CN;

Shuai Li, Chongqing, CN;

Xingang Niu, Chongqing, CN;

Huiming Yang, Chongqing, CN;

Zhonghua Wang, Chongqing, CN;

Yongsan Liu, Chongqing, CN;

Huaifu Liu, Chongqing, CN;

Assignee:

CCTEG Chongqing Research Institute, Chongqing, CN;

Attorney:

Wang Law Firm, Inc.

Primary Examiner:

Tara Schimpf

Assistant Examiner:

Daniel T Craig

Int. Cl.
CPC ...
E21B 43/114 (2006.01); B24C 7/00 (2006.01); E21B 7/18 (2006.01);
U.S. Cl.
CPC ...
E21B 43/114 (2013.01); E21B 7/18 (2013.01); B24C 7/0076 (2013.01);
Abstract

The present invention relates to a rear-mounted double-channel abrasive jet cutting device, falling within the field of coal seam pressure relief and permeability improvement. It primarily comprises an ultra-high pressure clean water pump, an ultra-high pressure hose, an ultra-high pressure rotary water swivel, an abrasive pumping device, an abrasive rotary sealing water swivel, a double-channel sealing drill pipe, and a double-channel cutter. High-pressure water and abrasive are conveyed through two independent channels, thereby avoiding the wear caused to the high-pressure hoses and drilling tools by mixed conveyance, whilst also preventing linear pressure loss in the high-pressure water. This structure effectively improves the coal-breaking performance of high-pressure water jet cutting and extends the service life of the cutting apparatus.

Find Patent Forward Citations

Zhang, Yongjiang. (2026). Rear-mounted double-channel abrasive jet cutting device (U.S. Patent No. 12735960). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12735960

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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