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US 7,255,353 B2Granted
Flexible graphite sealing joint with metal jacket for high temperature
AssigneesCommissariat a l'Energie Atomique, Garlock France SAS
InventorsPhilippe Caplain, Christian Rouaud, Patrick Le Gallo, Fabienne Le Guyadec, Michel Lefrancois, Jean-Marie Gentzbittel, Richard Levoy
Life of this patent
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Abstract
The seal can be used at high temperature. It is composed of a central flexible graphite core (10) maintained in its shape by two metal cups (12) that do not touch. It is all surrounded by a tight sheath (15) enabling the flexible core (10) to be maintained in a neutral atmosphere such as a partial vacuum or a neutral gas.
Claims8
A seal, comprising:
- a flexible core including flexible graphite;
- a metal envelope that surrounds the flexible core;
- and
- a sheath that is hermetically sealed, inside of which is placed a unit including the metal envelope and the flexible core, wherein
- the sheath includes two parts welded in a mid plane of the seal, and
- the metal envelope includes two cups not completely surrounding the flexible core.
3 more elements
A seal, comprising:
- a flexible core including flexible graphite;
- a metal envelope that surrounds the flexible core;
- and
- a sheath that is hermetically sealed, inside of which is placed a unit including the metal envelope and the flexible core, wherein
- the metal envelope includes two cups not completely surrounding the flexible core, and
- the sheath includes a higher part and a lower part welded at a level of two opposite edges of a quadrilateral formed by the seal.
3 more elements
Dependencies are inferred from the claim text.