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:
May. 05, 2026
Filed:
Mar. 08, 2024
Zhejiang University, Hangzhou, CN;
Shijun Wu, Hangzhou, CN;
Zhiheng Chen, Hangzhou, CN;
Yiqiang Dai, Hangzhou, CN;
Canjun Yang, Hangzhou, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
Abstract
An active pressure compensator for deep-sea sampling includes a spring chamber, a cam piston pump, and a circuit chamber; the spring chamber is configured to provide compensation liquid for the cam piston pump; the cam piston pump is configured to be able to draw liquid from the spring chamber and pump liquid to the circuit chamber; the circuit chamber is configured to be connected to a mechanism to be pressurized, and is provided therein with a pressure sensor and a control circuit board, the pressure sensor is configured to detect pressures of the compensation liquid from cam piston pump and the mechanism to be pressurized, the control circuit board is configured to control working of the cam piston pump based on pressure data feedback from the pressure sensor and thereby realize active pressure compensation for the mechanism to be pressurized. A pressure compensation method using the compensator is further provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile