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:
Aug. 19, 2025
Filed:
Mar. 07, 2025
China National Environmental Monitoring Center, Beijing, CN;
Shuli Zhao, Beijing, CN;
Mao Yuan, Beijing, CN;
Chao Wang, Beijing, CN;
Jinlong Yang, Beijing, CN;
Jing Zhang, Beijing, CN;
China National Environmental Monitoring Center, Beijing, CN;
Abstract
Disclosed is an automatic sample preparation device for sampling filter membranes of ambient air particulate matter. The device includes an air particulate matter sampler and a cutter, where the cutter includes a second conical tube. The second conical tube is provided with an air inlet and a sliding groove, a mounting frame is arranged on the second conical tube, sliding rods are arranged on the mounting frame, a sliding block is arranged on either of the sliding rods, and an elliptical frame is arranged on the two sliding blocks. A traction plate is arranged on the elliptical frame, a traction rod is arranged on the traction plate, a screening box is arranged on the traction rod, and the screening box and the sliding groove are arranged. A drainage block is arranged on the screening box, a discharging block is arranged on the drainage block, and screening holes are formed.