| 摘要 |
<p>1. Tamper-proof sealing cap of the one-piece type, intended for covering the mouth of a compressed-gas bottle and comprising : - a peripheral skirt (1) having projections directed inwards and intended for interacting with the male thread of the mouth (12), - a bottom (2) bordering the skirt (1), and - a central projection (6) which extends from the bottom (2) and enters the interior of the orifice (14) of the mouth and which has a cylindrical part capable of penetrating forcibly into a bore located inside the orifice (14), the projection (6) having a sealing stage consisting of a bolster (7) arranged on the inner wall of the bottom (2) an extended by a first cylindrical part (8), characterized in that the central projection (6) comprises a second sealing stage consisting of a second cylindrical part (9) terminating in a spherical zone (10) and, with a smaller diameter, extending the first cylindrical part, these two sealing stages being capable of interacting respectively with a mouth (12), the orifice (14) of which is provided either with a gasket (15) or with a pressure-regulating device (17).</p> |
