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. 22, 2022
Filed:
May. 18, 2020
Zengxin Chen, Beijing, CN;
Changchun Zhou, Beijing, CN;
Shenglu LI, Beijing, CN;
Jingzhe Chen, Beijing, CN;
Bin Chen, Beijing, CN;
Chen LI, Beijing, CN;
Hao Wei, Beijing, CN;
Zengxin Chen, Beijing, CN;
Changchun Zhou, Beijing, CN;
Shenglu Li, Beijing, CN;
Jingzhe Chen, Beijing, CN;
Bin Chen, Beijing, CN;
Chen Li, Beijing, CN;
Hao Wei, Beijing, CN;
BEIJING RED-SEA TECH CO., LTD., Beijing, CN;
Abstract
An initial positioning system and method for liquid measuring and taking. The system comprises a measuring passage, a variable pressure chamber, and a piston, an initial end of the measuring passage being in communication with the upper part of the variable pressure chamber; the piston reciprocates in the variable pressure chamber to cause a change between positive pressure and negative pressure in the variable pressure chamber; the initial positioning system further comprises a pressure relief port located on the wall of the variable pressure chamber and capable of communicating with the outside of the variable pressure chamber; when the piston is located at the pressure relief port, and the inside and outside of the variable pressure chamber are in communication, the maximum volume of the liquid that can be accommodated in the variable pressure chamber is not smaller than one third of the total volume of the variable pressure chamber.