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:
Sep. 02, 2025
Filed:
Jan. 06, 2025
National Institute of Measurement and Testing Technology, Chengdu, CN;
Division of Flow Metrology, National Institute of Measurement and Testing Technology, Chengdu, CN;
Fan Luo, Chengdu, CN;
Rong Gan, Chengdu, CN;
Jie Zhou, Chengdu, CN;
Li Lei, Chengdu, CN;
Shihui Cheng, Chengdu, CN;
Abstract
The present invention discloses a micro flow measuring device and method based on a mass method. The measuring device includes: an inner anti-evaporation cover; an outer anti-evaporation assembly; a weighing balance; a liquid collecting container; a packing assembly, disposed in the liquid collecting container, where the packing assembly is made of a material with low water absorption and can be gas-permeable, and an accommodating cavity configured to accommodate to-be-measured liquid is formed between a lower end of the packing assembly and a bottom portion of the liquid collecting container; a capillary receiving tube, where an upper end and a lower end of the capillary receiving tube are provided with a liquid receiving opening and a liquid discharging opening respectively, the lower end of the capillary receiving tube passes through the packing assembly vertically and extends into the accommodating cavity.