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. 19, 2026
Filed:
Jun. 20, 2023
China University of Petroleum-beijing, Beijing, CN;
Feng Chen, Beijing, CN;
Jinjie Lu, Beijing, CN;
Zhongli Ji, Beijing, CN;
Cheng Chang, Beijing, CN;
Zhen Liu, Beijing, CN;
Xiaolin Wu, Beijing, CN;
CHINA UNIVERSITY OF PETROLEUM-BEIJING, Beijing, CN;
Abstract
A filter capable of automatically cutting off gas flow, including: a housing () with a cavity, a filter element () disposed in the cavity, a blocking mechanism disposed in the flow channel (), and an unblocking member (). The housing is provided with an inlet end () and an outlet end (). The filter element () is provided with a first chamber (). A second chamber () is formed between the filter element () and the housing (), and a flow channel () is disposed between the first chamber () and the inlet end (). The blocking mechanism has an unblocking state in which the blocking mechanism is cooperated with the unblocking member () to allow a gas flow to flow out of the flow channel (), and a blocking state in which the blocking mechanism prevents the gas flow from flowing out of the flow channel ().