| 摘要 |
PURPOSE: An internal pressure vessel maintains the sealed state between a vessel cap and a main body with a sealing device, even an internal and external pressure is applied, thereby preventing the contents from outflowing or preserving. CONSTITUTION: A screw portion(11) of a vessel main body(1) concludes with a screw portion(21) of a vessel cap(2). At inner surface of the vessel cap(2), a sealing device(22), which has a rake face(22a) at one side, protrudes to be adjacent to the screw portion(21). At the edge of the screw portion(11) is formed a fixing part(12). The fixing part(12) has a rake face(12a) of which a slope direction is equal to the rake face(22a) of the sealing device(22). The fixing part(12) has the rake faces(22a,22a) at both sides. Simultaneously, the sealing device has the numerous rake faces(12a,12a) therein. The numerous rake faces(12a,12a) come in contact with the rake faces(22a,22a).
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