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. 11, 2026
Filed:
Aug. 26, 2021
Engineered Controls International, Llc, Elon, NC (US);
Guangbin Cao, Shanghai, CN;
Engineered Controls International, LLC, Elon, NC (US);
Abstract
Pressure relief valves for liquid hydrogen tanks are disclosed. An example pressure relief valve includes a valve body defining a chamber. A seat body defines a valve seat positioned within the chamber. A valve disc includes a flange and defines a sealing surface. The valve disc is configured to engage the valve seat in a closed position. A guide includes a first guide end and a second guide end. The first guide end defines a recessed surface that securely receives the flange of the valve disc. A retainer is coupled to the guide and defines an inner ledge. The flange of the valve disc is secured between the inner ledge and the first guide end. A cap is coupled to the valve body within the chamber. A spring extends between and engages the cap and the second guide end to bias the valve disc to the closed position.