Low-compression force metal gaskets
US8146924B2 · kind B2 · utility
11Cited by
18References
7Claims
0Family size
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Key dates
| Filing date | Jun 11, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Sep 18, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/0887
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A low-compression force metal gasket includes a coating layer containing a polymer material on at least a sealing surface of the gasket, and the coating layer satisfies the following conditions (1) to (3): (1) the layer comprises a resin, a rubber or a mixture thereof having an oxygen gas permeability coefficient at 25° C. of 10×10−12 to 0.1×10−12 (m2/s); (2) when the layer is compression deformed, the storage elastic modulus (E′) at 200° C. is in the range of 1.0×107 to 1.0×102 Pa; and (3) the coating layer has a thickness of 1 to 40 μm. The gasket provides a high seal at a low clamping force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.