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:
Feb. 17, 2026
Filed:
Jan. 24, 2022
Southwest Petroleum University, Sichuan, CN;
Chengdu Weiyi Petroleum Technology Co., Ltd, Sichuan, CN;
Yingxin Yang, Sichuan, CN;
Deng Zhang, Sichuan, CN;
Chunliang Zhang, Sichuan, CN;
Haitao Ren, Sichuan, CN;
Shiwei Niu, Sichuan, CN;
Yang Li, Sichuan, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Sichuan, CN;
CHENGDU WEIYI PETROLEUM TECHNOLOGY CO., LTD, Sichuan, CN;
Abstract
A PDC drill bit has a drill bit body and a blade. The blade is provided with cutting teeth. At least one cushion structure is rotatably connected to the drill bit body. The cushion structure makes contact with bottom hole rock, and the cushion structure swings in a direction opposite to the cutting of the drill bit. Alternatively, a cushioning portion on the cushion structure is eccentrically arranged. Under the action of the normal force of the bottom hole rock, the cushioning portion swings to an offset side. The cushion structure is detached from the bottom hole rock and is reset towards a free state under the action of a reset mechanism. Under complex motion conditions such as compound drilling and drilling into hard or non-uniform stratum conditions, the swing of the cushion structure absorbs an impact load and avoids impact damage to the cutting teeth.