| 摘要 |
A self-sealing actuating device is adapted for being mounted on the valve-body of a conventional pressurized container valve from which liquid product is dispensed with a propellant, in liquid, pasty or foamy condition. The device opens automatically when an external part thereof is moved, and comprises (a) as said external part, an actuating tube having a discharge orifice; (b) an obturating member lodged stationary in a tubular passage of the actuating tube, having an obturating head obturating the discharge orifice from the outside, and (c) a spring device biassing the actuating tube toward closed position when the actuating device is opened; when the actuating tube is moved toward open position, the obturating head frees the discharge orifice with the compression of the spring device.
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