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. 12, 2026
Filed:
Jan. 19, 2024
Washington State University, Pullman, WA (US);
Jacob W. Leachman, Pullman, WA (US);
Michael S. Wood, Pullman, WA (US);
Washington State University, Pullman, WA (US);
Abstract
A stem controlled valve uses a stack which includes a plurality of spacing discs and a plurality of sealing discs, where the spacing discs are interdigitated between the sealing discs, or uses a monolithic plug or inner wall of a valve seat with spaced apart extension areas. The sealing discs or extension areas are slightly larger in diameter than a valve seat they fit within or plug wall they fit against such that they elastically deform against the inner wall of the valve seat or the outer wall of the plug. For sealing in cryogenic applications, at least the outer portions of the sealing discs, or the extension areas in the case of a monolithic plug and inner seat wall are pre-stressed to generate void spaces that govern deformation and cryogenic pliability of the single or groups of sealing discs.