Metal seal, fluid control apparatus, and sealing method
US10883602B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 27, 2018 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/0881
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A metal seal is annular, provided sandwiched between first and second flat surfaces. The seal includes a first/second end surface opposite to the first/second flat surface, respectively. The first end surface includes paired first protrusions formed displaced in a radial direction of the metal seal and have dihedral angles contacting the first flat surface, and the second end surface includes a second protrusion formed inward of one first protrusion and outward of the other first protrusion in the radial direction, and has a dihedral angle contacting the second flat surface, and paired third protrusions that are respectively formed inward and outward of the second protrusion and whose highest points to which perpendicular distances from a reference plane including the dihedral angles of the paired first protrusions are shorter than a perpendicular distance from the reference plane to the dihedral angle of the second protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.