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:
Oct. 17, 2023
Filed:
Feb. 14, 2020
China Oilfield Services Limited, Tianjin, CN;
Zhibin Tian, Hebei, CN;
Zanqing Wei, Hebei, CN;
Lin Huang, Hebei, CN;
Xiaoqiang Du, Hebei, CN;
Yongren Feng, Hebei, CN;
Bin Gao, Hebei, CN;
Peng Sun, Hebei, CN;
Yong Jiang, Hebei, CN;
Minglue Fan, Hebei, CN;
Shiwei Zong, Hebei, CN;
China Oilfield Services Limited, Tianjin, CN;
Abstract
A downhole oil level detection device includes a mounting housing () and a balance cylinder () installed on the mounting housing (). The balance cylinder () includes a cylinder body () and a moving piston (), a piston tension spring (), a moving rod (), a moving rod compression spring () and a displacement sensor () installed in the cylinder body (). One end of the piston tension spring () is fixed to one end of the cylinder body (), the other end thereof is connected to one side of the moving piston (); one side of the moving piston () is also connected to one end of the moving rod compression spring (), the other end of the moving rod compression spring () is connected to one end of the moving rod (), the other end of the moving rod () is provided with the displacement sensor ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile