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. 23, 2021
Filed:
Jun. 28, 2017
Beijing Red-sea Tech Co., Ltd., Beijing, CN;
Zengxin Chen, Beijing, CN;
Shenglu Li, Beijing, CN;
Rui Li, Beijing, CN;
Jiaming Wei, Beijing, CN;
Jingzhe Chen, Beijing, CN;
Chen Li, Beijing, CN;
Chen Chen, Beijing, CN;
Hao Wei, Beijing, CN;
BEIJING RED-SEA TECH CO., LTD., Beijing, CN;
Abstract
A tool, container and method for extracting a liquid; the tool for extracting a liquid comprises: a pressure-changing means, a liquid-reservoir space, a liquid-drawing channel and an outflow channel; the pressure-changing means comprises a cylinder and a piston capable of moving back and forth in the cylinder; the back-and-forth movement of the piston causes positive and negative pressure changes in the cylinder; a start end of the liquid-reservoir space is in communication with the inside of the cylinder; a temporary liquid-storage groove or an opening is provided on a wall of the cylinder at a horizontal position below a port of the start end of the liquid-reservoir space; the volume of the maximum sealing portion of the cylinder is greater than the volume of the liquid-reservoir space; the liquid-drawing channel communicates with the liquid-reservoir space; the outflow channel communicates with a tail end of the liquid-reservoir space.