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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 12523101 B1

PDFFull Text
Date of Patent:
Jan. 13, 2026

Filed:

May. 28, 2024

Rotation angle control and braking device for power head of directional drill

Applicant:

Ccteg Chongqing Research Institute Co., Ltd., ChongQing, CN;

Inventors:

Dezhong Xin, ChongQing, CN;

Hang Chen, ChongQing, CN;

Xiaohua Liu, ChongQing, CN;

Jun Wan, ChongQing, CN;

Yuqing Xiao, ChongQing, CN;

Jinjun Lv, ChongQing, CN;

Jian Pu, ChongQing, CN;

Min Tang, ChongQing, CN;

Shizhai Zhang, ChongQing, CN;

Zhengang MA, ChongQing, CN;

Yuan Wan, ChongQing, CN;

Xin Dou, ChongQing, CN;

Yi Qin, ChongQing, CN;

Fujia Zhou, ChongQing, CN;

Xing Wang, ChongQing, CN;

Shiping Lu, ChongQing, CN;

Keyu Chen, ChongQing, CN;

Yange Yang, ChongQing, CN;

Shitao Zhang, ChongQing, CN;

Assignee:

CCTEG ChongQing Research Institute Co., Ltd., ChongQing, CN;

Attorney:

Wang Law Firm, Inc.

Primary Examiner:

David Carroll

Int. Cl.
CPC ...
E21B 7/04 (2006.01); E21B 3/02 (2006.01);
U.S. Cl.
CPC ...
E21B 7/04 (2013.01); E21B 3/02 (2013.01);
Abstract

The invention relates to a rotation angle control and braking device for a power head of a directional drill, belonging to the technical field of coal mine drills. It includes a transmission shaft, driving piston, fixed toothed disk, moving toothed disk, end cover, rotary seat, connecting seat, and a rotary speed reducer with a self-locking function. One end of the transmission shaft is fixedly connected to the drill's driving shaft. The fixed and moving toothed disks are sheathed on the transmission shaft, with springs placed between the moving toothed disk and the end cover. Skewed teeth between the disks engage under spring action. By injecting oil into a sealing cavity between the connecting seat and driving piston, the driving piston moves the moving toothed disk to disengage the skewed teeth. The rotary seat, fixed to the moving toothed disk, connects to the rotary speed reducer's output disk, enabling controlled rotation.

Find Patent Forward Citations

Xin, Dezhong. (2026). Rotation angle control and braking device for power head of directional drill (U.S. Patent No. 12523101). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12523101

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

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